COLLECTION NAME:
David Rumsey Historical Map Collection
Record
Author:
Jenkins, Olaf P.
Date:
1938
Short Title:
Sheet No. V East-Central Section. Geologic Map of California Prepared by Olaf P. Jenkins Chief Geologist, Geologic Branch.
Publisher:
Division of Mines California
Publisher Location:
Sacramento
Type:
Separate Map
Obj Height cm:
83
Obj Width cm:
110
Scale 1:
500,000
Note:
Dimensions are sheet size.
State/Province:
California
Subject:
Geology
Full Title:
Sheet No. V East-Central Section. Geologic Map of California Prepared by Olaf P. Jenkins Chief Geologist, Geologic Branch.
List No:
15485.005
Series No:
5
Publication Author:
Jenkins, Olaf P.
Pub Date:
1938
Pub Title:
Geologic Map of California Prepared by Olaf P. Jenkins Chief Geologist, Geologic Branch
Pub Note:
"First Edition of Jenkins's Monumental Geological Map of California. A fine example of Olaf Jenkin's mammoth geological map of California, published by the state Division of Mines in 1938. This one-inch-to-eight-mile geologic map shows the region's strata as they were then understood. Some approximately fifty different types of units are shown, ranging in geological age and type of formation. The major structures are easily identifiable, including the melange of the central coast, the massive batholiths of the sierras, the small, varied ranges of the desert regions, and the giant San Andreas fault. The regions still unmapped range from the high Sierras to the remote northern coast and even regions just inland of San Diego. Many inset maps appear throughout, showing average annual precipitation, the sources of the data, the township and range system, former glaciation in the Sierras, and a geomorphic map of the state. Olaf Jenkins was born and raised in the trans-disciplinary academic environment of San Francisco that predominated at the start of the 20th century. His father was a physiologist at Stanford, and he was raised near the campus and mentored from a young age by some of the foremost natural scientists of the day. Jenkins initially worked on government fisheries and studied the golden trout in the Sierra Nevada. However, he then pivoted to geology, working on Stanford expeditions to the Coast Range and Brazil, before mapping eastern parts of the US. He pivoted to economic geology and worked with Standard Oil for a period when the benefits of geology to resource production were just starting to become apparent. In this capacity, he worked in Indonesia He then pivoted back to academia, earning his doctorate and behind hired as the chief geologist at the newly created Geologic Branch of the Division of Mines. His first project was this monumental geologic map, which he invited a number of researchers to work on. He produced a number of other important works during his time in the position, including bibliographies on California's oil fields. He remains one of the most well-recognized Californian geologists. While the map is not institutionally rare, we locate only a single other that has been offered for sale." (Ruderman, 2023)
Pub List No:
15485.000
Pub Type:
Separate Map
Pub Height cm:
83
Pub Width cm:
110
Image No:
15485005.jp2
Authors:
Jenkins, Olaf P.
