Doheny Memorial Library, Los Angeles, CA 90089-0189 Public Domain. Release under the CC BY Attribution license--http://creativecommons.org/licenses/by/3.0/--Credit both “University of Southern California. Libraries” and “California Historical Society” as the source. Digitally reproduced by the USC Digital Library; From the California Historical Society Collection at the University of Southern California Send requests to address or e-mail given USC Libraries Special Collections specol@usc.edu
Description
Photograph of a LaBrea Tar Pits strata chart, 1938. The LaBrea Tar Pits are located in Hancock Park. Various items that would be found in each level of the earth are drawn within each labeled area, including sea shells, bones, and fossils. Photoprint reads, from top to bottom: "Pictorial Representation Of The Successive Strata Formation Of Los Angeles County At La Brea Pits", "Santa Monica Mountains", "Recent", "Pleistocene", "Tertiary", "Cross-Section Showing Geological Structure With Oil And Asphalt Seepage", "Periods. Characteristic Fossils", "Recent Alluvium 10000 to 25000 years ago. Prehistoric Man.Indian Remains", "Pleistocene Ice Age. 25000 -- 2000000 yrs. ago. Mammal Remains. Mastodon-Sabre Tooth Tiger Etc.", "Pliocene. Saugus. (Fernando Group). Osters Scallops Cone Shells Screw Shells Etc.", "Pico. 2000000 -- 20000000 yrs. ago. Ark Shells Mussels Screw Shells Fish Vertabrae Etc", "Miocene. Modelo. Scallops Screw Shels Oysters Etc", "Mint Canyon. Mammal Bones", "Topango. Scallops Screw Shells Clams Oysters Etc Marine Bones", "Vaqueros 20000000 -- 35000000 yrs. ago. Scallops Screw Shells Mussels Etc. (Scant)", "Oligocene. Sespe. 35000000 -- 45000000 yrs. ago. Mammal Bones Oil Pools", "Eocene. Tejon. Marine Oil Shales", "Megarros. Martinez 45000000 -- 60000000 yrs. ago. Scallops Screw Shells Clams Oysters Mussels", "Upper Cretaceous. 60000000 -- 80000000 yrs. ago. Crestaceous Fossils Etc." and "Federal Writers Project WPA Los Angeles". Sideways writing at left reads, "Mesozoic", "Tertiary", and "Quaternary".
Type
image
Format
2 photographs : photoprint, photonegative, b&w 21 x 26 cm., 18 x 13 cm. photographic prints negatives (photographic) photographs
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