History and Comprehensive Description of Loudoun County, Virginia by James William Head
page 4 of 250 (01%)
page 4 of 250 (01%)
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Summary Granite Loudoun Formation Weverton Sandstone Newark System Newark Diabase Catoctin Schist Rocks of the Piedmont Plain Lafayette Formation Metamorphism MINERAL AND KINDRED DEPOSITS SOILS Summary Loudoun Sandy Loam Penn Clay |
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