File:Grass Valley Geologic Map.jpg
Size of this preview: 761 × 600 pixels. Other resolutions: 305 × 240 pixels | 609 × 480 pixels | 975 × 768 pixels | 1,123 × 885 pixels.
Original file (1,123 × 885 pixels, file size: 332 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Grass Valley Geologic Map, where grd is granodiorite, pd is porphyrite and diabase, gb is gabbro, s is serpentine, and Ta is andesite |
| Date | |
| Source | The gold quartz veins of Grass Valley, California Professional Paper 194, https://pubs.er.usgs.gov/publication/pp194 |
| Author | W. D. Johnston Jr. |
Licensing
|
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
|
 |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:30, 24 March 2022 | | 1,123 × 885 (332 KB) | Pi3.124 | Uploaded a work by W. D. Johnston Jr. from The gold quartz veins of Grass Valley, California Professional Paper 194, https://pubs.er.usgs.gov/publication/pp194 with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on it.wikipedia.org
