File:Bulletin 426 Plate XVIII orbicular gabbro-diorite.jpg
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Summary
| Description |
English: Original caption: Surface of orbicular gabbro-diorite, Davie County, NC. Text from the volume regarding this figure: On the Hairston place, 10 miles west of Lexington, there are exposures of orbicular gabbro-diorite. The rock is of dark color with a greenish cast imparted by the hornblende and diallage. It presents a pronounced mottled appearance, being made up of dark-green areas of hornblende, varying from an eighth of an inch to several inches in diameter, set close together, with the interstices filled with white feldspar. (See PI. XVIII.) On a polished surface of the stone the effect is unique and beautiful, and the rock should prove of value for ornamental and decorative purposes. |
| Date | |
| Source | Granites of the Southeastern Atlantic States, Bulletin 426, United States Geological Survey, Government Printing Office, Washington, 1910. |
| Author | Watson, Thomas Leonard |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:02, 25 April 2016 | | 1,332 × 1,920 (222 KB) | Jstuby | User created page with UploadWizard |
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