U.S. Geological Survey Open-File Report 2004-1343

Published 2004
Online Only
Version 1.0

Data Collected from USGS Drilling in Lafayette Park, Washington, D.C. in November-December, 1976

By David C. Prowell and Raymond A. Christopher

Abstract

In 1976, the U.S. Geological Survey drilled four holes in Lafayette Park in Washington, D.C. These holes encountered two Coastal Plain units (Quaternary (undifferentiated) and the Lower Cretaceous Potomac Group), and then bottomed in Paleozoic metamorphic bedrock. The stratigraphic relations of the Coastal Plain formations indicate that the Potomac Group strata become abruptly thicker from west to east across the park.

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For questions about the content of this report, contact David C. Prowell.

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