A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Diorite, Azusa, California, USA |
|---|---|
| Description | This is typical for a diorite: dark gray and medium-grained. It contains black hornblende, glassy plagioclase, and some yellow brown grains of titanite (sphene). This sample is 10 cm across. It is probably Cretaceous in age. |
| Chronostratigraphy | Cretaceous (?) |
| Location | USA ▹ California ▹ Los Angeles. Near Azusa. |
| Photographer | Joseph Hartman. 2001-02-08. |
| Collection | Ward’s Collection of Classic North American Rocks #25. |
| Key words | diorite, California |
| Tech details | 849 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 35 |
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