National Geologic Map Database
General Information
- Title: Geologic formations of Washington, D.C., and vicinity
- Author(s): McGee, W.J.
- Publishing Organization: District of Columbia, Health Department
- Series and Number: Health Officer Report 1885 [p. 19-20, 23-25]
- Publication Date: 1886
- Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.