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USGS geologic mappers walking out an intermediate age alluvial fan surface in the Broadwell Mesa are of the northern Bristol Mts
April 11, 2013

Surficial Geologic Mapping in the northern Bristol Mountains, CA

USGS geologic mappers walkinbg out an intermediate age (likely middle Pleistocene) alluvial fan surface near Broadwell Mesa, in the northern Bristol Mountains, Kelso Dunes Wilderness Area, Mojave Desert, California. The dark outcrop in the middle ground, just ahead of the mappers, is basalt of Broadwell Mesa (~5.5 Ma), which is truncated by the Broadwell Mesa Fault. This

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chrysotilie
January 24, 2007

UICC Asbestos Chrysotile 'A' Standard

Union for International Cancer Control (UICC) asbestos chrysotile 'A' standard.

crocidolite standard
January 24, 2007

UICC Asbestos Crocidolite Standard

Union for International Cancer Control (UICC) asbestos crocidolite standard.

anthophyllite
January 24, 2007

UICC Asbestos Anthophyllite Standard

Union for International Cancer Control (UICC) Asbestos Anthophyllite Standard.

chrysotiile
January 24, 2007

UICC Asbestos Chrysotile 'B' Standard

Union for International Cancer Control (UICC) asbestos chrysotile 'B' standard.

Two men stand by an oil well pumping unit, one man is crouched over the well, all in a forested location.
August 12, 1999

Oil well pumping unit, south area of the La Honda oil field, CA

The south area of the La Honda oil field, California, was discovered during the late 1950s and produced an estimated 595,000 barrels of oil from about 12 wells, including the well in this photo. Most of the oil was produced from an unusual fossiliferous limestone of Miocene age, informally named the Burns sand, that overlies a thick sequence of Oligocene and Miocene

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