Geology Sitemap - Page 6 2016-09-26

Cave of the Mounds - Wisconsin Geological Attractions and Destinations
Cave of the Mounds is one of Wisconsin's geological attractions. Page 4.

Baraboo Hills and Devil's Lake - Wisconsin Geological Attractions and Destinations
Baraboo Hills and Devil's Lake are one of Wisconsin's geological attractions. Page 3.

Kettle Moraine - Wisconsin Geological Attractions and Destinations
Kettle Moraine is one of Wisconsin's geological attractions. Page 7.

High Cliff State Park - Wisconsin Geological Attractions and Destinations
High Cliff State Park is one of Wisconsin's geological attractions. Page 6.

Mineral Point - Wisconsin Geological Attractions and Destinations
Mineral Point is one of Wisconsin's geological attractions. Page 9.

Brachiopods - Fossil Picture Gallery
A typical brachiopod fossil. Geology. Page 3.

Concretions - False Fossils - Fossil Picture Gallery
Concretions are the most common false fossils. Page 5.

Foraminifers or Forams - Fossil Picture Gallery
Elphidium granti is a typical foraminifer. Page 13.

Gastropods - Fossil Picture Gallery
Tiny aquatic snail shells preserved in a southern California mudstone. Page 14.

Horse Tooth Fossil - Fossil Picture Gallery
A fossil horse tooth from Miocene rocks in South Carolina. Page 15.

Mammoth - Fossil Picture Gallery
Woolly mammoth skeleton mounted in the Lindsay Wildlife Museum. Page 17.

Packrat Midden - Fossil Picture Gallery
An ancient packrat midden rests in a Great Basin rock shelter. Page 18.

Root Casts - Fossil Picture Gallery
Fossil root casts show where sedimentation paused and life took root. Page 20.

Rugose or Solitary Corals - Fossil Picture Gallery
Rugose or solitary corals were abundant in the Paleozoic Era but are now extinct. Page 7.

Stromatolite - Fossil Picture Gallery
Stromatolite cross-sections near Saratoga Springs, New York. Page 22.

Petrified Wood and Fossil Trees - Fossil Picture Gallery
Fossil wood, or petrified wood. Geology. Page 19.

Trilobite - Fossil Picture Gallery
Trilobite fossil from Arizona. Geology. Page 23.

Tubeworm - Fossil Picture Gallery
Tubeworm fossil from a fossil seafloor cold seep. Page 24.

Shark Teeth - Fossil Picture Gallery
Shark teeth, fresh and fossil, from the U.S. east coast. Page 21.

Dinosaur Bones - Fossil Picture Gallery
Dinosaur bone is cut and polished as a gemstone. Page 9.

Dinosaur Eggs - Fossil Picture Gallery
Dinosaur eggs for sale at a high-end rock shop. Page 10.

Insect in Amber - Fossil Picture Gallery
An amber earring contains an insect fossil. Page 16.

Bivalves - Fossil Picture Gallery
A recent fossil clam looks like bivalves from the Early Cambrian. Page 2.

Cold Seeps - Fossil Picture Gallery
A fossilized cold seep in California's Panoche Hills. Page 4.

Colonial Coral - Fossil Picture Gallery
Colonial coral fossils are found in most Phanerozoic rocks. Page 6.

Crinoids - Fossil Picture Gallery
Crinoid stems are especially common in late Paleozoic rocks. Page 8.

Dung Fossils - Fossil Picture Gallery
Fecal fossils are fruitful finds. Page 11.

Fish - Fossil Picture Gallery
Fossil fish from Eocene lake beds. Page 12.

Columbia Karrenfeld from the Air
Aerial view of the Columbia karrenfeld in the California gold country. Page 5.

Calaveras Formation Marble, Columbia, California
Calaveras Formation marble crops out near Vallecito in the California gold country. Page 11.

Town Park Karrenfeld, Columbia, California
Karst features in a town park in Columbia in the California gold country. Page 2.

Sluiceboxes - Karrenfeld of Columbia, California
Sluiceboxes on display at Columbia, in the California gold country. Page 10.

Marble of the Calaveras Formation - Karrenfeld of Columbia, California
Marble hand specimen from Columbia in the California gold country. Page 7.

Hadrosaurus Site - New Jersey Geological Attractions and Destinations
The Hadrosaurus site is one of New Jersey's geological attractions. Page 3.

Pine Barrens - New Jersey Geological Attractions and Destinations
The Pine Barrens is one of New Jersey's geological attractions. Page 5.

Poricy Park - New Jersey Geological Attractions and Destinations
Poricy Park is one of New Jersey's geological attractions. Page 6.

Ramapo Mountains - New Jersey Geological Attractions and Destinations
The Ramapo Mountains are one of New Jersey's geological attractions. Page 7.

Keweenaw Copper District - Michigan Geological Attractions and Destinations
The Keweenaw Copper District is one of Michigan's geological attractions. Page 2.

Limestone Quarry - Michigan Geological Attractions and Destinations
The limestone quarry of Rogers City is one of Michigan's geological attractions. Page 4.

Petoskey - Michigan Geological Attractions and Destinations
Petoskey is one of Michigan's geological attractions. Page 5.

Pictured Rocks - Michigan Geological Attractions and Destinations
Pictured Rocks is one of Michigan's geological attractions. Page 6.

Sleeping Bear Dunes - Michigan Geological Attractions and Destinations
Sleeping Bear Dunes is one of Michigan's geological attractions. Page 7.

Warren Dunes - Michigan Geological Attractions and Destinations
Warren Dunes is one of Michigan's geological attractions. Page 8.

Westerly Granite - Rhode Island Geological Attractions and Destinations
The granite of Westerly is one of Rhode Island's geological attractions. Page 8.

East Fork Lake - Ohio Geological Attractions and Destinations
East Fork Lake is one of Ohio's geological attractions. Page 4.

Indiana Dunes - Indiana Geological Attractions and Destinations
Indiana Dunes is one of Indiana's geological attractions. Page 4.

Marengo Cave - Indiana Geological Attractions and Destinations
Marengo Cave is one of Indiana's geological attractions. Page 5.

Sugar Creek Gorge and Pine Hills - Indiana Geological Attractions and Destinations
Sugar Creek Gorge is one of Indiana's geological attractions. Page 7.

Central Park, Manhattan - New York Geological Attractions and Destinations
Central Park in New York City is one of New York state's geological attractions. Page 2.

Eternal Flame Falls - New York Geological Attractions and Destinations
Eternal Flame Falls in Chestnut Ridge Park is one of New York state's geological attractions. Page 5.

Coral Fossil Near Kingston - New York Geological Attractions and Destinations
Fossils like this coral near Kingston are one of New York state's geological attractions. Page 3.

Dunderberg Mountain - New York Geological Attractions and Destinations
Dunderberg Mountain, in the Hudson Highlands, is one of Nwe York state's geological attractions. Page 4.

The Shawangunks - New York Geological Attractions and Destinations
The Shawangunks, near New Paltz, are one of New York state's geological attractions. Page 16.

Hoyt Quarry Site - New York Geological Attractions and Destinations
The Hoyt quarry site near Saratoga Springs is one of New York state's geological attractions. Page 9.

Lester Park - New York Geological Attractions and Destinations
Lester Park's fossil exposure is one of New York state's geological attractions. Page 12.

Niagara Falls - New York Geological Attractions and Destinations
Niagara Falls is one of New York state's geological attractions. Page 14.

Rip Van Winkle, Catskill Mountains - New York Geological Attractions and Destinations
Rip Van Winkle, part of the Catskill Mountains, is one of New York state's geological attractions. Page 15.

Stark's Knob - New York Geological Attractions and Destinations
Stark's Knob is one of New York state's geological attractions. Page 17.

Hudson River Headwaters - New York Geological Attractions and Destinations
The Hudson River in the Adirondack Mountains is one of New York state's geological attractions. Page 10.

Mississippi Palisades State Park - Illinois Geological Attractions and Destinations
Mississippi Palisades State Park is one of the geological attractions of Illinois. Page 9.

Moraine Hills State Park - Illinois Geological Attractions and Destinations
Moraine Hills State Park is one of the geological attractions of Illinois. Page 10.

Shawnee National Forest - Illinois Geological Attractions and Destinations
Shawnee National Forest is one of the geological attractions of Illinois. Page 11.

Starved Rock State Park - Illinois Geological Attractions and Destinations
Starved Rock State Park is one of the geological attractions of Illinois. Page 12.

Howe Caverns - New York Geological Attractions and Destinations
Howe Caverns is one of New York state's geological attractions. Page 8.

Lake Erie Cliffs, 18-Mile Creek and Penn-Dixie Quarry - New York Geological Attractions and Destinations
A set of New York state's geological attractions. Page 11.

Letchworth State Park - New York Geological Attractions and Destinations
Letchworth State Park is of New York state's geological attractions. Page 13.

Nottingham Park Serpentine Barren - Pennsylvania Geological Attractions and Destinations
Nottingham Park Serpentine Barren in Chester County is one of Pennsylvania's geological attractions. Page 4.

Ohiopyle State Park - Pennsylvania Geological Attractions and Destinations
Ohiopyle State Park, Fayette County, is one of Pennsylvania's geological attractions. Page 5.

Trenton Falls Gorge - New York Geological Attractions and Destinations
Trenton Falls Gorge is one of New York state's geological attractions. Page 18.

Canyon De Chelly - Arizona Geological Attractions and Destinations
Canyon De Chelly is one of Arizona's geological attractions. Page 2.

Chiricahua National Monument - Arizona Geological Attractions and Destinations
Chiricahua National Monument is one of Arizona's geological attractions. Page 3.

Glen Canyon National Recreation Area - Arizona Geological Attractions and Destinations
Glen Canyon National Recreation Area is one of Arizona's geological attractions. Page 4.

Grand Canyon - Arizona Geological Attractions and Destinations
The Grand Canyon is one of Arizona's great geological attractions. Page 5.

Jerome - Arizona Geological Attractions and Destinations
The former mining town of Jerome is one of Arizona's geological attractions. Page 6.

Meteor or Barringer Crater - Arizona Geological Attractions and Destinations
Meteor (Barringer) Crater is one of Arizona's geological attractions. Page 7.

Painted Desert - Arizona Geological Attractions and Destinations
The Painted Desert is one of Arizona's geological attractions. Page 8.

Papago Buttes, Phoenix - Arizona Geological Attractions and Destinations
Papago Buttes, Phoenix, is one of Arizona's geological attractions. Page 9.

Sedona and the Verde Valley - Arizona Geological Attractions and Destinations
Sedona and the Verde Valley is one of Arizona's geological attractions. Page 11.

San Francisco Volcanic Field - Arizona Geological Attractions and Destinations
San Francisco Volcanic Field is one of Arizona's geological attractions. Page 10.

Sunset Crater Volcano - Arizona Geological Attractions and Destinations
Sunset Crater Volcano is one of Arizona's geological attractions. Page 12.

Big Bend National Park - Texas Geological Attractions and Destinations
Big Bend National Park is one of Texas' geological attractions. Page 2.

Windley Key Fossil Reef - Florida Geological Attractions and Destinations
Windley Key Fossil Reef is one of Florida's geological attractions. Page 8.

Cayo Costa - Florida Geological Attractions and Destinations
Cayo Costa is one of Florida's geological attractions. Page 2.

Devil's Millhopper - Florida Geological Attractions and Destinations
The sinkhole called Devil's Millhopper is one of Florida's geological attractions. Page 3.

Florida Caverns - Florida Geological Attractions and Destinations
Florida Caverns is one of Florida's geological attractions. Page 4.

Florida Keys - Florida Geological Attractions and Destinations
The Florida Keys are one of Florida's geological attractions. Page 5.

Santa Fe River Rise - Florida Geological Attractions and Destinations
Santa Fe River Rise is one of Florida's geological attractions. Page 6.

Sinkhole Lakes of Winter Park - Florida Geological Attractions and Destinations
The sinkhole lakes of Winter Park are one of Florida's geological attractions. Page 9.

Borax Lake - Oregon Geological Attractions and Destinations
Borax Lake is one of Oregon's geological highlights. Page 2.

Cascade Range - Oregon Geological Attractions and Destinations
the Cascade Range is one of Oregon's geological highlights. Page 3.

Columbia Plateau - Oregon Geological Attractions and Destinations
The Columbia Plateau is one of Oregon's geological highlights. Page 4.

Crater Lake - Oregon Geological Attractions and Destinations
Crater Lake is one of Oregon's geological highlights. Page 6.

Diamond Craters - Oregon Geological Attractions and Destinations
Diamond Craters is one of Oregon's geological highlights. Page 7.

Fort Rock - Oregon Geological Attractions and Destinations
Fort Rock is one of Oregon's geological highlights. Page 8.

John Day Fossil Beds - Oregon Geological Attractions and Destinations
John Day Fossil Beds is one of Oregon's geological highlights. Page 10.

Oregon Caves - Oregon Geological Attractions and Destinations
Oregon Caves is one of Oregon's geological highlights. Page 11.

Skinner Butte - Oregon Geological Attractions and Destinations
Skinner Butte is one of Oregon's geological highlights. Page 13.

Steens Mountain - Oregon Geological Attractions and Destinations
Steens Mountain is one of Oregon's geological highlights. Page 14.

Summer Lake - Oregon Geological Attractions and Destinations
Summer Lake is one of Oregon's geological highlights. Page 15.

Glass Buttes - Oregon Geological Attractions and Destinations
The obsidian beds of Glass Buttes are one of Oregon's geological highlights. Page 9.

Wrights Point - Oregon Geological Attractions and Destinations
Wright's Point is one of Oregon's geological highlights. Page 16.

Crack in the Ground - Oregon Geological Attractions and Destinations
Crack in the Ground is one of Oregon's geological highlights. Page 5.

Pilot Butte - Oregon Geological Attractions and Destinations
Pilot Butte in Bend is one of Oregon's geological highlights. Page 12.

Angular Unconformity in Conglomerate - Unconformity Types and Examples
An angular unconformity in a conglomerate boulder. Page 4.

Angular Unconformity, Pebble Beach, California - Unconformity Types and Examples
A well-developed angular unconformity at a California beach. Page 2.

Angular Unconformity, Carlin Canyon, Nevada - Unconformity Types and Examples
The famous Carlin Canyon unconformity. Page 3.

Nonconformity, Red Rocks, Colorado - Unconformity Types and Examples
The 'Great Unconformity' at Red Rocks is a nonconformity. Page 5.

Landslides - Slump Near Morgan Hill California
A slump in the foothills south of San Jose, California. Page 9.

Road Numbering on BLM Lands - About the Township and Range System
BLM roads have designated codes based on the Public Land Survey System. Page 7.

U.S. Principal Meridians and Base Lines - About the Township and Range System
Map of principal meridians and base lines in the Public Land Survey System. Page 4.

Principal Meridians and Base Lines of the Deep South - About the Township and Range System
Southern meridians and base lines of the Public Land Survey System. Page 6.

Principal Meridians and Base Lines of the Upper Midwest - About the Township and Range System
Early principal meridians and base lines of the Public Land Survey System. Page 5.

Sections of a Township - About the Township and Range System
How sections of a township are numbered in the Public Land Survey System. Page 2.

Divisions of a Section - About the Township and Range System
How sections of a township are divided in the Public Land Survey System. Page 3.

Grandfather Mountain - North Carolina Geological Attractions and Destinations
Grandfather Mountain is one of North Carolina's geological attractions. Page 4.

Mount Mitchell - North Carolina Geological Attractions and Destinations
Mount Mitchell is one of North Carolina's geological attractions. Page 5.

Tuff Cone - Volcano Types
Tuff cones are one of the volcano types found on land. Page 8.

Stone Mountain - North Carolina Geological Attractions and Destinations
Stone Mountain is one of North Carolina's geological attractions. Page 8.

Anatomy of a Marine Terrace - Wave-Cut Platforms
Cross section of a marine terrace displaying the wave-cut platform. Page 2.

Cloudland Canyon State Park - Georgia Geological Attractions and Destinations
Cloudland Canyon State Park is one of Georgia's geological attractions. Page 2.

Gold Mines, Dahlonega - Georgia Geological Attractions and Destinations
The gold mines of Dahlonega are one of Georgia's geological attractions. Page 4.

Fall Line Cities: Columbus, Macon, Milledgeville, Augusta - Georgia Geological Attractions and Destinations
The Fall Line cities of Columbus, Macon, Milledgeville and Augusta are among Georgia's geological attractions. Page 3.

Panola Mountain State Park - Georgia Geological Attractions and Destinations
Panola Mountain State Park is one of Georgia's geological attractions. Page 6.

Pigeon Mountain - Georgia Geological Attractions and Destinations
Pigeon Mountain's rock city is one of Georgia's geological attractions. Page 7.

Providence Canyon State Park - Georgia Geological Attractions and Destinations
Providence Canyon State Park is one of Georgia's geological attractions. Page 8.

Skidaway Island State Park - Georgia Geological Attractions and Destinations
Skidaway Island State Park is one of Georgia's geological attractions. Page 10.

Soapstone Ridge - Georgia Geological Attractions and Destinations
Soapstone Ridge is one of Georgia's geological attractions. Page 11.

Stone Mountain - Georgia Geological Attractions and Destinations
Stone Mountain is one of Georgia's geological attractions. Page 12.

Toccoa Falls - Georgia Geological Attractions and Destinations
Toccoa Falls is one of Georgia's geological attractions. Page 13.

Cumberland Caverns - Tennessee Geological Attractions and Destinations
Cumberland Caverns is one of Tennessee's geological attractions. Page 2.

Cumberland Mountains - Tennessee Geological Attractions and Destinations
Cumberland Mountains is one of Tennessee's geological attractions. Page 3.

Natural Bridge - Tennessee Geological Attractions and Destinations
Natural Bridge is one of Tennessee's geological attractions. Page 4.

Ocoee River Gorge - Tennessee Geological Attractions and Destinations
Ocoee River Gorge is one of Tennessee's geological attractions. Page 5.

Reelfoot Lake - Tennessee Geological Attractions and Destinations
Reelfoot Lake is one of Tennessee's geological attractions. Page 6.

Warner Parks, Nashville - Tennessee Geological Attractions and Destinations
Warner Parks in Nashville are one of Tennessee's geological attractions. Page 8.

Vogel State Park - Georgia Geological Attractions and Destinations
Vogel State Park is one of Georgia's geological attractions. Page 14.

Bash Bish Falls - Massachusetts Geological Attractions and Destinations
Bash Bish Falls is one of Massachusetts' geological attractions. Page 2.

Howard's Waterfall Cave - Georgia Geological Attractions and Destinations
Howard's Waterfall Cave is one of Georgia's geological attractions. Page 5.

Rock City - Georgia Geological Attractions and Destinations
Rock City is one of Georgia's geological attractions. Page 9.

Elephant Rocks - Missouri Geological Attractions and Destinations
Elephant Rocks is one of Missouri's geological attractions. Page 2.

Johnson's Shut-Ins - Missouri Geological Attractions and Destinations
Johnson's Shut-Ins is one of Missouri's geological attractions. Page 3.

The Old Lead Belt - Missouri Geological Attractions and Destinations
The Old Lead Belt is one of Missouri's geological attractions. Page 6.

Roaring River - Missouri Geological Attractions and Destinations
Roaring River is one of Missouri's geological attractions. Page 7.

Cape Cod - Massachusetts Geological Attractions and Destinations
Cape Cod is one of Massachusetts' geological attractions. Page 3.

Castle Rock - Massachusetts Geological Attractions and Destinations
Castle Rock is one of Massachusetts' geological attractions. Page 4.

Dexter Drumlin - Massachusetts Geological Attractions and Destinations
Dexter Drumlin is one of Massachusetts' geological attractions. Page 5.

Natural Bridge - Massachusetts Geological Attractions and Destinations
Natural Bridge is one of Massachusetts' geological attractions. Page 8.

Washington DC Geology - Granite Sculpture at the FDR Memorial
Great granite blocks evoke war at the FDR Memorial Washington, DC. Page 12.

Washington DC Geology - Haupt Fountain
The oldest stone in America adds to the geology of Washington, DC. Page 13.

Washington DC Geology - Interior, Jefferson Memorial
Marble columns soften the light in the Jefferson Memorial, Washington, DC. Page 4.

Washington DC Geology - Seneca Sandstone, Smithsonian Institution
Seneca sandstone in the Smithsonian Castle, Washington, DC. Page 9.

Washington DC Geology - Temperance Fountain
The marble-and-granite Temperance Fountain is a minor highlight of Washington, DC. Page 2.

Washington DC Geology - Washington Monument
The Washington Monument is a geological highlight of Washington, DC. Page 5.

Geology of San Francisco, California - Ash Bed in the Merced Formation at Ocean Beach
Ashfall beds in the Colma Formation are one of San Francisco's geologic attractions. Page 24.

Geology of San Francisco, California - Corona Heights Chert
The chert of Corona Heights is one of San Francisco's geologic attractions. Page 17.

Geology of San Francisco, California - Corona Heights
Corona Heights is one of San Francisco's geologic attractions. Page 16.

Geology of San Francisco, California - View from Corona Heights
The view from Corona Heights is one of San Francisco's geologic attractions. Page 18.

Geology of San Francisco, California - Chert Boulders, Golden Gate Park
Chert boulders in Golden Gate Park are one of San Francisco's geologic attractions. Page 8.

Geology of San Francisco, California - Bluffs at Ocean Beach
The bluffs at Ocean Beach are one of San Francisco's geologic attractions. Page 23.

Geology of San Francisco, California - Buried Ship, Financial District
Artificial land bearing old ships is one of San Francisco's geologic attractions. Page 6.

Geology of San Francisco, California - Chert in the Japanese Tea Garden, Golden Gate Park
The Japanese Tea Garden is one of San Francisco's geologic attractions. Page 9.

Geology of San Francisco, California - Basalt in the Japanese Tea Garden, Golden Gate Park
The stones of the Japanese Tea Garden make it one of San Francisco's geologic attractions. Page 10.

Geology of San Francisco, California - Telegraph Hill
Telegraph Hill is one of San Francisco's geologic attractions. Page 20.

Geology of San Francisco, California - Franciscan Rocks at Baker Beach
The rocks of the Franciscan Complex are one of San Francisco's geologic attractions. Page 14.

The Strange Rock Polish - The Polished Stone of Mammoth Rocks, Sonoma County, California
Polished overhanging rock at the Mammoth Rocks site in Sonoma County, California. Page 3.

Sunset Rocks - The Polished Stone of Mammoth Rocks, Sonoma County, California
Sunset Rocks, at the Mammoth Rocks site in Sonoma County, California. Page 2.

1857 Earthquake Segment of the San Andreas Fault - Fault Gouge Near Big Pines
Big Pines, on the central San Andreas fault, has some spectacular exposures of gouge. Page 8.

1857 Earthquake Segment of the San Andreas Fault - Fault Gorge at Davis Road
Davis Road is on the northernmost point of the central San Andreas fault, which ruptured in the great 1857 California earthquake. Page 58.

1857 Earthquake Segment of the San Andreas Fault - View North from Davis Road
Davis Road is at the north end of the central San Andreas fault, which ruptured in the great 1857 California earthquake. Page 60.

1857 Earthquake Segment of the San Andreas Fault - Elevated Pipeline at Davis Road
A pipeline crosses the San Andreas fault zone above ground at the Davis Road locality. Page 59.

1857 Earthquake Segment of the San Andreas Fault - View East Near Valyermo
This spot near Valyermo has a nice view of the central San Andreas fault. Page 11.

1857 Earthquake Segment of the San Andreas Fault - Landslide Scar at Wrightwood, California
Wrightwood may be the most dangerous place in the central San Andreas fault. Page 7.

1857 Earthquake Segment of the San Andreas Fault - Pelona Schist
The Pelona Schist is exposed in several places along the central San Andreas fault. Page 4.

The Other Stack - The Polished Stone of Mammoth Rocks, Sonoma County, California
The large stack at the Mammoth Rocks site in Sonoma County, California. Page 10.

Lechatelierite - Mineraloids
Lechatelierite is one of the mineraloids. Page 3.

Jet - Mineraloids
Jet is one of the mineraloids. Geology. Page 2.

Opal - Mineraloids
Opal is one of the mineraloids. Geology. Page 6.

Limonite - Mineraloids
Limonite is one of the mineraloids. Page 4.

Palagonite - Mineraloids
Palagonite is one of the mineraloids. Page 7.

Obsidian - Mineraloids
Obsidian is one of the mineraloids. Page 5.

Andalusite Picture - The Silicate Minerals
Andalusite is one of the silicate minerals. Page 2.

Axinite Picture - The Silicate Minerals
Axinite is one of the silicate minerals. Page 3.

Beryl Picture - The Silicate Minerals
Beryl is one of the silicate minerals. Page 5.

Chlorite Picture - The Silicate Minerals
Chlorite is one of the silicate minerals. Page 6.

Kyanite Picture - The Silicate Minerals
Kyanite is one of the silicate minerals. Page 15.

Feldspar Picture - The Silicate Minerals
Feldspar is a group of the silicate minerals. Page 12.

Olivine Picture - The Silicate Minerals
Olivine is one of the silicate minerals. Page 20.

Pyroxene Picture - The Silicate Minerals
Pyroxene is a group of the silicate minerals. Page 24.

Quartz Picture - The Silicate Minerals
Quartz is one of the silicate minerals. Page 25.

Sillimanite Picture - The Silicate Minerals
Sillimanite is one of the silicate minerals. Page 28.

Staurolite Picture - The Silicate Minerals
Staurolite is one of the silicate minerals. Page 30.

Talc Picture - The Silicate Minerals
Talc is one of the silicate minerals. Page 31.

Zeolites - The Silicate Minerals
The great majority of rocks are made of silicate minerals. Page 35.

Zircon Picture - The Silicate Minerals
Xircon is one of the silicate minerals. Page 36.

Chrysocolla Picture - The Silicate Minerals
Chrysocolla is one of the silicate minerals. Page 7.

Serpentine (Chrysotile) Picture - The Silicate Minerals
Serpentine is one of the silicate minerals. Page 27.

Dioptase Picture - The Silicate Minerals
Dioptase is one of the silicate minerals. Page 8.

Dumortierite Picture - The Silicate Minerals
Dumortierite is one of the silicate minerals. Page 9.

Epidote Picture - The Silicate Minerals
Epidote is one of the silicate minerals. Page 10.

Eudialyte Picture - The Silicate Minerals
Eudialyte is one of the silicate minerals. Page 11.

Hemomorphite Picture - The Silicate Minerals
Hemimorphite is one of the silicate minerals. Page 14.

Lazurite Picture - The Silicate Minerals
Lazurite is one of the silicate minerals. Page 16.

Leucite Picture - The Silicate Minerals
Leucite is one of the silicate minerals. Page 17.

Nepheline Picture - The Silicate Minerals
Nepheline is one of the silicate minerals. Page 19.

Prehnite Picture - The Silicate Minerals
Prehnite is one of the silicate minerals. Page 22.

Pyrophyllite Picture - The Silicate Minerals
Pyrophyllite is one of the silicate minerals. Page 23.

Scapolite Picture - The Silicate Minerals
Scapolite is one of the silicate minerals. Page 26.

Garnet Picture - The Silicate Minerals
Garnet is a group of the silicate minerals. Page 13.

Mica Picture - The Silicate Minerals
Mica is a group of the silicate minerals. Page 18.

Sodalite Picture - The Silicate Minerals
Sodalite is one of the silicate minerals. Page 29.

Titanite (Sphene) Picture - The Silicate Minerals
Titanite, or sphene, is one of the silicate minerals. Page 32.

Topaz Picture - The Silicate Minerals
Topaz is one of the silicate minerals. Page 33.

Willemite Picture - The Silicate Minerals
Willemite is one of the silicate minerals. Page 34.

Dolomite - Carbonate Minerals
Dolomite is one of the carbonate minerals. Page 4.

Rhodochrosite - Carbonate Minerals
Rhodochrosite is one of the carbonate minerals. Page 7.

Corundum - Oxide Minerals
Corundum is one of the oxide minerals. Page 2.

Cuprite - Oxide Minerals
Cuprite is one of the oxide minerals. Page 3.

Magnetite - Oxide Minerals
Magnetite is one of the oxide minerals. Page 7.

Psilomelane - Oxide Minerals
Psilomelane is one of the oxide minerals. Page 8.

Pyrolusite - Oxide Minerals
Pyrolusite is one of the oxide minerals. Page 9.

Ruby (Corundum) - Oxide Minerals
Ruby (corundum) is one of the oxide minerals. Page 10.

Rutile - Oxide Minerals
Rutile is one of the oxide minerals. Page 11.

Cerussite - Carbonate Minerals
Cerussite is one of the carbonate minerals. Page 3.

Magnesite - Carbonate Minerals
Magnesite is one of the carbonate minerals. Page 5.

Malachite - Carbonate Minerals
Malachite is one of the carbonate minerals. Page 6.

Siderite - Carbonate Minerals
Siderite is one of the carbonate minerals. Page 8.

Smithsonite - Carbonate Minerals
Smithsonite is one of the carbonate minerals. Page 9.

Witherite - Carbonate Minerals
Witherite is one of the carbonate minerals. Page 10.

Copper - Native Element Minerals
Copper, the element Cu, is found in nature in native form. Page 3.

Gold - Native Element Minerals
Gold, the element Au, is usually found in nature in native form. Page 4.

Graphite - Native Element Minerals
Carbon, the element C, occurs in native form as graphite. Page 2.

Iron - Native Element Minerals
Native iron, the element Fe, is almost entirely from meteorites. Page 5.

Silver - Native Element Minerals
Silver, the element Ag, is sometimes found in nature in native form. Page 7.

Sulfur - Native Element Minerals
Sulfur, the element S, is found in nature in native form. Page 8.

Fuchsite - Mica Minerals
Fuchsite is a chromian variety of muscovite mica. Page 3.

Lepidolite - Mica Minerals
Lepidolite is a lithium-rich member of the mica minerals. Page 5.

Margarite - Mica Minerals
Margarite is a calcium-rich member of the mica minerals. Page 6.

Muscovite - Mica Minerals
Muscovite is an aluminum-rich member of the mica minerals. Page 7.

Phengite or Mariposite - Mica Minerals
Phengite is a type of mica. Geology. Page 8.

Phlogopite - Mica Minerals
Phlogopite is a magnesium-rich member of the mica minerals. Page 9.

Plagioclase Feldspar in Anorthosite
Anorthosite hand specimens from New York's Adirondack Mountains. Page 2.

Bladed Mineral Habit
Kyanite exemplifies the bladed mineral habit. Page 4.

Andradite Garnet
Andradite is one of the garnet minerals. Page 2.

Grossular Garnet
Grossular is one of the garnet minerals. Page 3.

Pyrope Garnet
Pyrope is one of the garnet minerals. Page 4.

Spessartine Garnet
Spessartine is one of the garnet minerals. Page 5.

Uvarovite Garnet
Uvarovite is one of the garnet minerals. Page 6.

Rock-Forming Minerals - Pyroxenes - Augite
Pyroxene is a rock-forming mineral. Page 8.

Rock-Forming Minerals - Biotite
Biotite mica is classified as a rock-forming mineral. Page 2.

Rock-Forming Minerals - Calcite
Calcite is a rock-forming mineral, most important in limestone. Page 3.

Rock-Forming Minerals - Dolomite
Dolomite is one of the rock-forming minerals. Page 4.

Rock-Forming Minerals - Feldspar Picture
Feldspar is a major rock-forming mineral. Page 5.

Rock-Forming Minerals - Muscovite
Muscovite is classed as a rock-forming mineral. Page 6.

Rock-Forming Minerals - Olivine
Olivine is an important rock-forming mineral. Page 7.

Rock-Forming Minerals - Quartz
Quartz is classified as a rock-forming mineral. Page 9.

Agate or Chalcedony Rock
Agate is a rock made of chalcedony or cryptocrystalline quartz. Page 14.

Carnelian or Red Agate
Carnelian is a red agate. Geology. Page 13.

Cats-Eye Agate
Cats-eye chalcedony has fibrous inclusions of reibekite. Page 15.

Jasper or Red Chert
Poppy jasper from its type locality. Page 12.

Opal or Hydrated Silica
Opal is a hydrated form of amorphous silica. Page 16.

Chalcedony in a Thunder Egg
A thunder egg's core is pure chalcedony. Page 11.

Rose Quartz or Pink Milky Quartz
Rose quartz is a milky quartz with metallic impurities. Page 7.

Oil Seep at McKittrick, California - Asphalt Streambed
Clay dust and hard tar alternate in this McKittrick streambed. Page 12.

Oil Seep at McKittrick, California - Asphalt Droplets
Sunlight reflects off oil-seep droplets that are otherwise hard to see. Page 3.

Oil Seep at McKittrick, California - Asphalt Crust
Natural asphalt pavement at the historic McKittrick oil seep. Page 6.

Oil Seep at McKittrick, California - Asphalt Hand Specimen
Closeup of natural tar from the McKittrick oil seep. Page 7.

Oil Seep at McKittrick, California - Asphalt Specimen
Asphalt specimen shows its dark underside. Page 8.

Oil Seep at McKittrick, California - McKittrick Siltstone
Some of the sediment at the McKittrick oil seep is indurated rock. Page 9.

1857 Earthquake Segment San Andreas Fault - Neenach Volcanics Andesite
Neenach Volcanics andesite from Pine Canyon Road on the San Andreas fault. Page 21.

1857 Earthquake Segment San Andreas Fault - Transverse Ranges from Cerro Noroeste Road
The Transverse Ranges reflect the influence of the San Andreas fault south of the San Emigdio Mountains. Page 48.

1857 Earthquake Segment San Andreas Fault - Schist of Mount Pinos
Schist from the summit of Mount Pinos near the San Andreas fault. Page 43.

1857 Earthquake Segment San Andreas Fault - Aerial View Leona Valley to Pine Canyon
Aerial view of the San Andreas fault from Elizabeth Lake to Pine Canyon. Page 13.

1857 Earthquake Segment San Andreas Fault - Aerial View Pine Canyon to Old Ridge Route
Aerial view of Pine Canyon Road on the San Andreas fault. Page 20.

1857 Earthquake Segment San Andreas Fault - Fault Gouge at Apache Saddle
Fault gouge crops out in a roadcut at Apache Saddle near the San Andreas fault. Page 45.

1857 Earthquake Segment San Andreas Fault - Carrizo Plain Panorama
Panorama of the ridge marking the San Andreas fault on the Carrizo Plain. Page 57.

1857 Earthquake Segment San Andreas Fault - Color Contrast Across the Fault East
Rock types differ across the trace of the San Andreas fault near Frazier Park - view east. Page 33.

1857 Earthquake Segment San Andreas Fault - Color Contrast Across the Fault West
Rock types differ across the trace of the San Andreas fault near Frazier Park - view west. Page 32.

1857 Earthquake Segment San Andreas Fault - Cuddy Valley East, in March
The view east of Cuddy Valley, in March, includes the trace of the San Andreas fault near Frazier Park. Page 39.

1857 Earthquake Segment San Andreas Fault - Cuddy Valley East, in October
The view east of Cuddy Valley, in October, includes the trace of the San Andreas fault near Frazier Park. Page 40.

1857 Earthquake Segment San Andreas Fault - Cuddy Pond
Cuddy Pond is a sag pond on the trace of the San Andreas fault near Frazier Park. Page 36.

1857 Earthquake Segment San Andreas Fault - Cuddy Valley West
Cuddy Valley exposes the trace of the San Andreas fault near Frazier Park - view west. Page 35.

1857 Earthquake Segment San Andreas Fault - View North Across Cuddy Valley
The view across Cuddy Valley northward includes the trace of the San Andreas fault near Frazier Park. Page 38.

1857 Earthquake Segment San Andreas Fault - View South Across Cuddy Valley
Cuddy Valley runs right on the trace of the San Andreas fault near Frazier Park. Page 37.

1857 Earthquake Segment San Andreas Fault - Carrizo Plain, Soda Lake
Soda Lake gleams white on the Carrizo Plain near the San Andreas fault, in the October dry season. Page 54.

1857 Earthquake Segment San Andreas Fault - Carrizo Plain Offset Streams
Offset streams mark the San Andreas fault on the Carrizo Plain. Page 55.

1857 Earthquake Segment San Andreas Fault - Wallace Creek on the Carrizo Plain
Wallace Creek is a famous offset stream marking the San Andreas fault on the Carrizo Plain. Page 56.

1857 Earthquake Segment San Andreas Fault - Neogene Sediments of the Pacific Plate
A steep gorge north of Cerro Noroeste Road reveals the Neogene continental rocks south of the San Andreas fault. Page 50.

1857 Earthquake Segment San Andreas Fault - San Andreas Fault at Frazier Park
Trace of the San Andreas fault near Frazier Park. Page 31.

1857 Earthquake Segment San Andreas Fault - Fault-Aided Gorge, Santiago Creek Canyon
The rugged canyon of Santiago Creek follows the San Andreas fault in the San Emigdio Mountains. Page 47.

1857 Earthquake Segment San Andreas Fault - Canyon Head, San Emigdio Mountains
Head of a rugged canyon in the San Emigdio Mountains near the San Andreas fault. Page 46.

1857 Earthquake Segment San Andreas Fault - Gorge from Cerro Noroeste Road
A steep gorge north of Cerro Noroeste Road reveals the San Andreas fault west of the San Emigdio Mountains. Page 49.

1857 Earthquake Segment San Andreas Fault - Hills Near Gorman
Granite hills north of the San Andreas fault near Gorman. Page 27.

1857 Earthquake Segment San Andreas Fault - Fault Gouge on Pine Canyon Road
Fault gouge along Pine Canyon Road on the San Andreas fault. Page 18.

Fault Breccia
Fault breccia on Pine Canyon Road on the San Andreas fault. Page 19.

1857 Earthquake Segment San Andreas Fault - Tejon Pass Gouge
Fault gouge on the trace of the San Andreas fault near Gorman. Page 29.

1857 Earthquake Segment San Andreas Fault - Leona Valley
Linear Leona Valley follows the San Andreas fault. Page 12.

1857 Earthquake Segment San Andreas Fault - Elizabeth Lake Pressure Ridge
Pressure ridge on the San Andreas fault at Elizabeth Lake. Page 14.

1857 Earthquake Segment San Andreas Fault - Elizabeth Lake Trough
Elizabeth Lake lies in a downdropped block on the San Andreas fault. Page 15.

1857 Earthquake Segment San Andreas Fault - Elizabeth Lake
Elizabeth Lake is attractive to settlers despite being on the San Andreas fault. Page 16.

1857 Earthquake Segment San Andreas Fault - Elizabeth Lake from West
Elizabeth Lake and its nearby pressure ridge on the San Andreas fault. Page 17.

1857 Earthquake Segment San Andreas Fault - Sag Pond Near Carrizo Plain, March
North of Cerro Noroeste Road, a sag pond appears on the San Andreas fault near the Carrizo Plain. Page 51.

1857 Earthquake Segment San Andreas Fault - View to San Emigdio Mountains
View from Pine Canyon Road to the San Emigdio Mountains on the San Andreas fault. Page 22.

1857 Earthquake Segment San Andreas Fault - Antelope Valley and the Tehachapis
View north from Pine Canyon Road on the San Andreas fault to the Antelope Valley. Page 23.

1857 Earthquake Segment San Andreas Fault - San Andreas Fault Valley and Mojave
View of the San Andreas fault and the Mojave Desert from Pine Canyon Road on the San Andreas fault. Page 24.

1857 Earthquake Segment San Andreas Fault - Pine Mountain Club
Pine Mountain Club is a resort village near the San Andreas fault. Page 44.

1857 Earthquake Segment San Andreas Fault - View North from Mount Pinos
View from the summit of Mount Pinos across the trace of the San Andreas fault west of Frazier Park. Page 41.

1857 Earthquake Segment San Andreas Fault - Pine Mountain Club and San Andreas Fault Trace
View from the summit of Mount Pinos of Pine Mountain Club and the nearby trace of the San Andreas fault. Page 42.

1857 Earthquake Segment San Andreas Fault - Fault Trace Near Gorman
Trace of the San Andreas fault near Gorman. Page 28.

1857 Earthquake Segment San Andreas Fault - Old Ridge Route and Antelope Valley
View of the San Andreas fault and the Antelope Valley from the Old Ridge Route on the San Andreas fault. Page 25.

1857 Earthquake Segment San Andreas Fault - Quail Lake
View of the San Andreas fault and Quail Lake from the Old Ridge Route on the San Andreas fault. Page 26.

1857 Earthquake Segment San Andreas Fault - Sag Pond Near Carrizo Plain, October
A sag pond on the San Andreas fault near the Carrizo Plain, in the October dry season. Page 52.

1857 Earthquake Segment San Andreas Fault - Fault Gouge at Tejon Pass
Fault gouge on the trace of the San Andreas fault near Gorman. Page 30.

1857 Earthquake Segment San Andreas Fault - Temblor Range
The Temblor Range overlooks the Carrizo Plain near the San Andreas fault, in the October dry season. Page 53.

Salton Sea Seep Field - Briny Caldera
Photos of wild geothermal activity in southern California. Page 17.

Salton Sea Seep Field - Gryphon Mud
Sticky gray mud in the Davis-Schrimpf seep field. Page 8.

Salton Sea Seep Field - Mud Flows on Gryphons
A rampart of gryphons at the Davis-Schrimpf seep field near the Salton Sea. Page 4.

Salton Sea Seep Field - Salt Crusts
Salt crusts in the Davis-Schrimpf seep field, southern California. Page 16.

Salton Sea Seep Field - Salty Mudflow
Salty mudflow in the Davis-Scrhimpf seep field near the Salton Sea. Page 14.

Salton Sea Seep Field - Simmering Brine Pool
Brine pool in the Davis-Schrimpf seep field. Page 13.

Salton Sea Seep Field - Mud Volcano Brine Pool
Photos of wild geothermal activity in southern California. Page 9.

Salton Sea Seep Field - Salt Crust Puddles
Salt crust on the ground at the Davis-Schrimpf seep field. Page 15.

Gibraltar - Jurassic Limestone of Gibraltar
Jurassic limestone of the Rock of Gibraltar. Page 3.

Gibraltar - The Rock of Gibraltar
The Rock of Gibraltar from close up at sea level. Page 4.

Platy Mineral Habit
Gypsum has a platy habit in this clear pane. Page 18.

Prismatic Mineral Habit
Prismatic habit is usually shown by tourmaline. Page 19.

Radiating Mineral Habit
A pyrite dollar shows radiating habit. Page 20.

Reniform Mineral Habit
Hematite shows the reniform habit. Page 21.

Rhombohedral Mineral Habit
Calcite forms rhombohedral grains. Page 22.

Rosette Mineral Habit
Barite commonly displays a rosette habit. Page 23.

Amygdaloidal Mineral Habit
Amydaloidal minerals form in amygdules. Page 2.

Banded Mineral Habit
Banded minerals tend to form layers. Page 3.

Blocky Mineral Habit
Pyrite grains display a blocky habit. Page 5.

Botryoidal Mineral Habit
Botryoidal mineral tend to look like grape clusters. Page 6.

Cruciform Mineral Habit
Cruciform minerals commonly occur in crossed twins. Page 7.

Dendritic Mineral Habit
Copper metal displays a branching dendritic habit. Page 8.

Drusy Mineral Habit
Drusy minerals form crystalline crusts. Page 9.

Encrusting Mineral Habit
Calcite on a limestone overhang shows an encrusting habit. Page 10.

Equant Mineral Habit
The equant habit is more or less round. Page 11.

Fibrous Mineral Habit
Rutile takes a fibrous form in quartz. Page 12.

Geode Mineral Habit
Calcite crust is the most common lining of geodes. Page 13.

Granular Mineral Habit
The granular habit involves poorly formed crystals, unlike the equant habit. Page 14.

Lamellar Mineral Habit
Thick gypsum chunks show a lamellar habit. Page 15.

Massive Mineral Habit
Quartz shows a massive habit in this gneiss. Page 16.

Micaceous Mineral Habit
Micaceous habit is exemplified here not by mica but by asbestos. Page 17.

Oakland Urban Landslide - Dating an Earlier Slide
Maps reveal the history of an Oakland, California, landslide. Page 9.

Oakland Urban Landslide - View of Stream Bluff
Key map of the Oakland, California, landslide. Page 2.

Oakland Urban Landslide - A Ruined Home
A house ruined by an Oakland, California, landslide. Page 5.

Oakland Urban Landslide - A Posted Dwelling
A house placed off limits by an Oakland, California, landslide. Page 6.

Oakland Urban Landslide - Headscarp Looking North
Headscarp of an active Oakland, California, landslide. Page 8.

Oakland Urban Landslide - The Main Headscarp
Active headscarp of an Oakland, California, landslide. Page 7.

Oakland Urban Landslide - View from the Bluff Top
An old landslide scar near a current Oakland, California, landslide. Page 4.

Oakland Urban Landslide - An Odd Park
An unusual city park sheds light on an Oakland, California, landslide. Page 3.

Landslides - Block Slide, Oregon
Block slide in Oregon, part of the gallery of landslide photos. Page 6.

Landslides - Creep Diagram
Diagram of soil creep, the gentlest kind of landslide. Page 2.

Landslides - Rock Affected by Soil Creep
Gallery of landslide photos. Geology. Page 4.

Landslides - Debris Avalanche at Yungay, Peru, 1970
Classic photo of the great Yungay-Ranrahirca avalanche of Peru, 1970. Page 22.

Landslides - Debris Avalanche Diagram
Gallery of landslide photos. Geology. Page 21.

Landslides - La Conchita Earthflow of 1995
The La Conchita landslide of 1995, in the gallery of landslide photos. Page 25.

Landslides - Block Slide Diagram
Diagram of a block slide, in the gallery of landslide photos. Page 5.

Landslides - Diagram of Debris Flow
Diagram of debris flow, in the gallery of landslide photos. Page 18.

Landslides - Diagram of Earthflow
Earthflow diagram, in the gallery of landslide photos. Page 23.

Landslides - Diagram of Rockfall
Diagram of a rockfall, in the gallery of landslide photos. Page 15.

Landslides - Diagram of Slump or Rotational Slide
Diagram of a slump or rotational slide, in the gallery of landslide photos. Page 7.

Landslides - Diagram of Translational Slide
Diagram of translational slide, in the gallery of landslide photos. Page 12.

Landslides - Tree Affected by Soil Creep
A tree bends in response to the slow soil creep beneath it. Page 3.

Oakland Urban Landslide - 1897 Topographic Map
Early air photos reveal the history of an Oakland, California, landslide. Page 12.

Oakland Urban Landslide - 1915 Topographic Map
Early air photos reveal the history of an Oakland, California, landslide. Page 11.

Isostatic Wave-Cut Platforms, Canna, Scotland
Wave-cut platforms on the Isle of Canna, Scotland. Page 10.

Eustatic Wave-Cut Platform, Jenner, California
Wave-cut platform north of Jenner, California. Page 4.

Eustatic Wave-Cut Platform, Goat Rock, California
Wave-cut platform at Goat Rock State Park, California. Page 5.

Eustatic Wave-Cut Platform, Laguna Beach, California
Wave-cut platform at Laguna Beach, California. Page 6.

Isostatic Wave-Cut Platform, Luing West Coast
Wave-cut platform on the Isle of Luing, Scotland. Page 9.

Isostatic Wave-Cut Platform, Isle of Luing, Scotland
Wave-cut platform on the Isle of Luing, Scotland. Page 8.

Eustatic Wave-Cut Platform, Duncans Point, California
Wave-cut platform at Duncans Point, California. Page 3.

Active Wave-Cut Platform at Robin Hoods Bay, England
An active wave-cut platform at Robin Hoods Bay, Yorkshire, England. Page 11.

Isostatic Wave-Cut Platform, Seil, Scotland
Wave-cut platform on the Isle of Seil, Scotland. Page 7.

Landslides - Bridge Structure Affected by Slump
Slumping and settling can disrupt structures like this concrete bridge. Page 27.

Landslides - Fire Triggered Landslide
Landslides are a common aftereffect of fires. Page 26.

Landslides - Monitoring Rock Stability
Plumb lines and tautwires help gauge motions of an old quarry wall. Page 28.

Coso Geothermal Field, California - Steam Pipes and Mudpots
Pipes carry steam from production wells past a group of mudpots in the Coso geothermal field. Page 9.

Coso Geothermal Field, California - Mudpot
Mudpot in the Coso geothermal field, eastern California. Page 7.

Coso Geothermal Field, California - Sugarloaf Mountain Rhyolite Dome
Sugarloaf Mountain is the largest lava dome in the Coso geothermal field. Page 4.

Coso Geothermal Field, California - Geothermal Drilling
Exploratory drilling at the Coso geothermal field of eastern California. Page 8.

Coso Geothermal Field, California - Steam Production Pipelines
Steam production pipelines at the Coso geothermal field, eastern California. Page 10.

Coso Geothermal Field, California - Fumarole
A fumarole vents steam at the Coso geothermal field, eastern California. Page 6.

Coso Geothermal Field, California - Location Map of the Coso Range
Location map of the Coso Range, eastern California, and major faults. Page 2.

Upper Las Vegas Wash, Nevada - Silts
Silt in Upper Las Vegas Wash signifies quieter, moister conditions. Page 5.

Valley of Fire State Park, Nevada - Incipient Arch
An arch forms in the red rocks of the Aztec Sandstone at Vallery of Fire State Park, Nevada. Page 9.

Valley of Fire State Park, Nevada - Sandstone Bedding Plane
Bedding plane in red rocks of the Aztec Sandstone at Valley of Fire State Park, Nevada. Page 8.

Valley of Fire State Park, Nevada - Jurassic Crags
Red rocks of the Aztec Sandstone form crags in this desert park northeast of Las Vegas. Page 4.

Valley of Fire State Park, Nevada - Petroglyphs
Petroglyphs on the red rocks of the Aztec Sandstone at Valley of Fire State Park, Nevada. Page 12.

Valley of Fire State Park, Nevada - Concretions
Concretions in the Aztec Sandstone in Valley of Fire State Park, Nevada. Page 7.

Valley of Fire State Park, Nevada - Valley of Fire Vista
Younger red rocks and older gray ones in Valley of Fire State Park. Page 5.

Point of Geological Interest or POGI - Geology of Golden, Colorado
The POGI site is a geologic highlight of the Golden area, west of Denver. Page 5.

SAFOD - Fault Gouge in Core
Fault gouge in a core from the SAFOD drilling project. Page 14.

Ugashik Caldera - Volcano Types
Ugashik is a typical caldera. Geology. Page 16.

Cinder Cone or Scoria Cone - Volcano Types
Puu ka Pele, a Hawaiian cinder or scoria cone. Page 3.

Cinder Cone at Red Hill, California - Volcano Types
Red Hill is a typical scoria cone or cinder cone. Page 4.

Cinder Cone Cross Section - Volcano Types
A California roadcut exposes the innards of a cinder cone. Page 6.

Cinder Cones at Coso Volcanic Field - Volcano Types
Red Hill and a neighboring cinder cone against a Sierran backdrop. Page 5.

Rhyolite Dome in Maar - Volcano Types
A Coso rhyolite dome sits in the maar that preceded it. Page 2.

Maar - Volcano Types
One of the Ukinrek Maars in southwestern Alaska, formed by explosive phreatomagmatic activity. Page 7.

Mauna Kea Shield Volcano - Volcano Types
Shield volcanoes like Mauna Kea can be extremely large. Page 15.

Mount Belknap Shield Volcano - Volcano Types
Mount Belknap is a small example of a shield volcano. Page 14.

Stratovolcano of Burney Mountain - Volcano Types
Stratovolcanoes are the archetypical volcano. Page 11.

Lassen Peak Stratovolcano - Volcano Types
Lassen Peak is a stratovolcano. Geology. Page 12.

Shiveluch Stratovolcano - Volcano Types
Shiveluch is an active stratovolcano in far eastern Russia. Page 13.

Tuff Ring of Fort Rock, Oregon - Volcano Types
Fort Rock, Oregon, is an eroded tuff ring. Page 9.

Tuya - Volcano Types
Subglacial volcanoes are called tuyas. Page 10.

Tombolo at Goat Rock, Northern California
Textbook photo of a tombolo at Goat Rock State Park. Page 4.

Tombolo at Hog Island, California
Hog Island, California, is connected to the shore of Tomales Bay by a tombolo. Page 5.

Tombolo Near Mealista, Isle of Lewis, Scotland
A small, exquisite tombolo near Mealista on the Isle of Lewis. Page 2.

Tombolo at St. Michaels Mount, Cornwall
St. Michaels Mount, connected to the Cornish mainland by a tombolo. Page 6.

Tombolo at Mont St. Michel, Normandy, France
The famous destination sits at the end of a tombolo. Page 7.

Tombolo at Popham Beach, Maine
Pictures of these rare sandbars that extend to a nearshore island. Page 8.

Tombolo at Castle Tioram, Scotland
A tombolo leads to Castle Tioram in Loch Moidart, Scotland. Page 3.

Tombolo at Toyo Seco Beach, Peru
A tombolo on the coast of Peru. Geology. Page 9.

Amphibole Minerals - Hornblende with Zircon and Feldspar
A Pakistan hornblende in the gallery of amphibole minerals. Page 2.

Potassium Feldspar (Sanidine) in Andesite
Andesite of the Sutter Buttes is full of large sanidine grains. Page 8.

Potassium Feldspar Crystal - Orthoclase
A large grain of alkali feldspar (orthoclase) shows its two cleavages. Page 6.

Labradorite, Unpolished - Gallery of Feldspars
Labradorescence shows even in an unpolished specimen. Page 3.

Polished Labradorite - Gallery of Feldspars
A polished labradorite specimen shows its gaudy side. Page 4.

Alkali Feldspar of Pikes Peak
Pink alkali feldspar is the predominant ingredient of Pikes Peak's granite. Page 9.

Quartz Crystals and Chalcedony in a Geode
Crust of quartz crystals and agate in a geode. Page 10.

Copper in Dendritic Habit - Minerals with Metallic Luster
Native copper in dendritic habit, in the gallery of minerals with metallic luster. Page 5.

Galena - Minerals with Metallic Luster
Galena, in the gallery of minerals with metallic luster. Page 6.

Gold Nugget - Minerals with Metallic Luster
Gold nugget, in the gallery of minerals with metallic luster. Page 7.

Hematite - Minerals with Metallic Luster
Hematite, in the gallery of minerals with metallic luster. Page 8.

Magnetite, Massive - Minerals with Metallic Luster
Magnetite in massive form, in the gallery of minerals with metallic luster. Page 9.

Magnetite Crystal and Lodestone - Minerals with Metallic Luster
Magnetite in massive form, in the gallery of minerals with metallic luster. Page 10.

Pyrite - Minerals with Metallic Luster
Pyrite, in the gallery of minerals with metallic luster. Page 11.

Pyrite Crystal Forms - Minerals with Metallic Luster
Pyrite crystals, in the gallery of minerals with metallic luster. Page 12.

Amethyst or Purple Quartz
Amethyst specimen showing typical shapes of quartz crystals. Page 8.

Quartz in Granite
Quartz is distinct from feldspar in granite. Page 5.

Milky Quartz Clast
Quartz in its milky form. Geology. Page 6.

Quartz Spears
Typical spears of crystalline quartz. Page 3.

Grooves on Quartz Crystals
Quartz crystals showing the typical grooves across their sides. Page 4.

Chalcopyrite - Minerals with Metallic Luster
Chalcopyrite, in the gallery of metallic minerals. Page 2.

Chalcopyrite in Matrix - Minerals with Metallic Luster
Chalcopyrite, in the gallery of minerals with metallic luster. Page 3.

Native Copper Nugget - Minerals with Metallic Luster
Copper nugget, in the gallery of minerals with metallic luster. Page 4.

California Coast Geology - Key Map of the California Coast
Key map showing many localities in this photo tour. Page 2.

California Coast Geology - Point Loma, California
Point Loma guards the entrance to San Diego Bay. Page 42.

Kelso Dunes, Mojave Desert, California - View West from Kelso Dunes
The Devil's Playground and Bristol Mountains seen from the crest of the Kelso Dunes in the Mojave Desert. Page 24.

Kelso Dunes, Mojave Desert, California - Granite Mountains and Kelso Dunes
The Granite Mountains south of the Kelso Dunes in the Mojave Desert. Page 16.

Kelso Dunes, Mojave Desert, California - Dune Grass, Kelso Dunes
Dune grasses help stabilize sand at the Kelso Dunes in the Mojave Desert. Page 9.

Kelso Dunes, Mojave Desert, California - Dune Crest, Kelso Dunes
The Kelso Dunes are well suited for experiencing booming sand. Page 19.

Kelso Dunes, Mojave Desert, California - Kelso Dunes Location Map
Map of the Kelso Dunes and adjoining Devil's Playground on a Landsat image. Page 2.