Basalt, Andesite, and Rhyolite Source Universe

Basalt, Andesite, and Rhyolite Source Universe

All the basalt geochemical sources listed below have been analyzed at the Northwest Research Obsidian Studies Laboratory and are considered as adequately characterized. These sources make up the basalt source reference universe with which basalt and andesite artifact trace element data are compared and correlated. At the present time, only sources in the Lake Tahoe area are described in any detail. In the near future, however, we will be expanding our basalt source information and will provide compositional information for all sources.

For information about our obsidian source reference database, click here.

Arizona

Adobe Mountain, Maricopa County
Lone Butte, Maricopa County
McDowell Mountain, Maricopa County
Moon Mountain, Maricopa County
Saddle, Maricopa County
Shaw Butte, Maricopa County
Terrace Garden, Maricopa County
West Wing Mountain, Maricopa County

California

Alder Hill, Nevada County
Boca Ridge, Placer County
Boca Spring, Nevada County
Davies Creek, Placer County
Dogwood, Plumas County
Doud's Landing, Calaveras County
Emigrant Lake, Plumas County
Fillmore Hill, Sierra County
Gold Lake, Plumas and Sierra Counties
Goldstone, San Bernardino County
Humbug Variety A, Butte and Plumas Counties
Humbug Variety B, Butte and Plumas Counties
Independence Lake, Nevada and Placer Counties
Martis Creek, Placer County
Meathouse Meadow, Sierra County
Morgan Valley Road, Lake County
Nelson, San Bernardino County
Putnam Peak, Solano County
Sawtooth Ridge, Placer County
Secret Meadow, Sierra County
Siegler Creek, Lake County
Siegfred Canyon Ridge, Plumas County
Watson Creek, Placer County

Hawaii

Bellows Air Force Base, Oahu
Makua-19 Basalt Dike, Oahu
Mauna Kea Adze Quarry, Island of Hawaii
Saddle Road, Island of Hawaii

Idaho

King Hill Creek, Elmore County

Nevada

Alkali Creek, Humboldt County
Antelope Valley A, White Pine County
Antelope Valley B, White Pine County
Badlands A, Elko County
Coleman, Washoe County
Deep Creek A, Elko County
Diamond Mountains, Eureka County
Fire Creek, Lander County
Gleason Creek, White Pine County
Granite Point, Pershing County
Incline Ridge, Washoe County
Lagomarsino, Storey County
North Dry Valley, Washoe County
North Spring, Washoe County
Smith Valley, White Pine County
Steamboat Hills, Washoe County

Oregon

Beaver Creek, Deschutes County
Black Bull Spring, Malheur County
Dry Creek Canyon, Malheur County
Freezeout Lake, Malheur County
Warner Valley, Harney County

Utah

Badlands A, Tooele County
Cedar Mountains, Tooele County
Deep Creek A, Tooele County
Deep Creek B, Tooele County
Deep Creek C, Tooele County
Ferber Wash, Tooele County
Flat Hills A, Tooele County
Flat Hills B, Tooele County
Flat Hills C, Tooele County
Flat Hills D, Tooele County
Flat Hills E, Tooele County
Gold Hill Wash, Tooele County
Grayback Hills, Tooele County
Rydalch Canyon, Tooele County
Wildcat Mountain, Tooele County

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Last Updated: 11/13/2006
Northwest Research Obsidian Studies Laboratory