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File:Geology of the Richmond Basin 1899 Plate XXVI.jpg

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Summary

Description
English: Plate XXVI from The Geology of the Richmond Basin published by USGS, which has the following caption:
A Map of a Portion of the Midlothian District, Richmond Coal Field. Surveyed by U.S. Geological Survey.
The text of the report describes the figure:
Special map of the Midlothian district.—The accompanying map of the Midlothian district (Pl. XXVI) was prepared to show the position of the outlying basins of that part of the area and to exhibit the position of the coal beds. In part the tracing of the outcrop of the coal is based upon old surveys. The extension of the main seam of coal from the region bordering the James River into the region of Falling Creek has not been demonstrated. It is possible that the failure to reach coal in that part of the field is due to a coating of post-Newark deposits which cap the ridge dividing the waters of Falling Creek from the James River. None but shallow pits have been sunk in this part of the field. Properly directed boring at points a few hundred yards west of the bank marking the supposed outcrop of the coal-bearing horizon would explore a portion of the old marginal coal field as yet untouched.
Date
Source Nathaniel Southgate Shaler and Jay Backus Woodworth, 1899. Geology of the Richmond Basin, Virginia. U.S. Government Printing Office. United States Geological Survey.
Author USGS

Licensing

Public domain
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.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

Captions

A Map of a Portion of the Midlothian District, Richmond Coal Field

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geological map

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image/jpeg

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