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Allen received the first G.K. Gilbert Award in Seismic Geology and in 1995 he received the Medal of the Seismological Society of America. [5] He was a member of the faculty of the California Institute of Technology since 1955. [6] He became a professor emeritus there in 1990. [1] Allan died on January 21, 2021, at the age of 95. [7]
In 1853 the Legislature passed a joint resolution asking him for geological information about the state. He submitted a report On the Geology of the Sierra Nevada, or California Range. About two months later, the Legislature created the first California Geological Survey headed by Trask, who retained the title of State Geologist.
Prior to his work with GHI, Tucker served as the acting state geologist, principal state geologist and supervising geologist of the California Geological Survey between 1982 and 1991. He served on the board of directors of the Seismological Society of America and the World Seismic Safety Initiative (WSSI).
Thomas Wilson Dibblee, Jr. (11 October 1911, in Santa Barbara, California – 17 November 2004, in Santa Barbara, California) was an American geologist best known for his geological mapping.
A map by the California Geological Survey shows faults near the Lake Almanor area in Plumas County, where a magnitude 5.5 earthquake struck Thursday, May 11, 2023, followed by a magnitude 5.2 ...
Potassium-argon dates and the Cenozoic chronology of the Sierra Nevada, California (1963) Gary Brent Dalrymple (born May 9, 1937) is an American geologist , author of The Age of the Earth and Ancient Earth, Ancient Skies , and National Medal of Science winner.
The earthquake struck near Llano at about 11:45 a.m.
The oldest rocks in California date back 1.8 billion years to the Proterozoic and are found in the San Gabriel Mountains, San Bernardino Mountains, and Mojave Desert.The rocks of eastern California formed a shallow continental shelf, with massive deposition of limestone during the Paleozoic, and sediments from this time are common in the Sierra Nevada, Klamath Mountains and eastern Transverse ...