Title | Diatomaceous earth, Lompoc, Santa Barbara County, California |
Description | The Valmonte Diatomite, a member of the Monterey Shale, is a soft, white chalky rock composed primarily of opal-like material that was once the remains of dead diatoms (microscopic marine or freshwater plants). A few quartz grains are also present. The specimen is 9.5 cm across, and is from the Valmonte Diatomite member of Monterey Shale. |
Chronostratigraphy | Tertiary (upper Miocene) |
Lithostratigraphy | Valmonte Diatomite member of Monterey Shale |
Location | USA ▹ California ▹ Santa Barbara. Near Lompoc. |
Photographer | Nessa Eull. 2001-04-05. |
Collection | Ward’s Collection of Classic North American Rocks #58. |
Key words | diatomaceous earth, California, Valmonte Diatomite |
Tech details | 1002 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
GeoDIL number | 293 |
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