Article ID: CBB904353285

Philip Tyson's 1849 Study of California Gold Prospects (2017)

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Philip Thomas Tyson (1799–1877) toured privately through central California, from San Francisco through the Sierra Nevada foothills gold prospects in 1849, to assess their potential and the general geology of the region. He produced the first regional map with geologic notations and several rough topographic/geologic cross-sections. He described Coast Range basement rocks, now described as Franciscan Complex mélange and broken formation, the stratigraphic configuration of the Great Valley, and general geology of the Sierra Nevada foothills. He recognized that the older Coast Range and Sierran basement were deformed prior to recent volcanism and extensive terrestrial fluvial sedimentation, likely Neogene in age.

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Authors & Contributors
Testa, Stephen M.
Escamilla-González, Francisco Omar
Morelos-Rodríguez, Lucero
Kenneth G. McQueen
Gregory Crouch
Robyn d'Avignon
Journals
Earth Sciences History: Journal of the History of the Earth Sciences Society
Natura Alpina, Rivista della Società di Scienze Naturali del Trentino
Technology and Culture
Scientia Canadensis: Journal of the History of Canadian Science, Technology, and Medicine
Osiris: A Research Journal Devoted to the History of Science and Its Cultural Influences
Oil-Industry History
Publishers
University of Washington Press
State University of New York at Stony Brook
University Press of Colorado
University of Chicago Press
Scribner
Reaktion Books
Concepts
Geology
Mines and mining
Gold
Earth sciences
Mineralogy
Mountains
People
Edward Hargraves
John William Mackay
Blake, William P.
Werner, Abraham Gottlob
Winchell, Newton Horace
Whitney, Josiah Dwight
Time Periods
19th century
20th century
18th century
21st century
20th century, early
Places
United States
California (U.S.)
North America
Alaska (U.S.)
New South Wales (Australia)
Sierra Nevada (North America)
Institutions
Yosemite National Park
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