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A Laminae containing siliceous material in Conococheague lime
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Analysis of units argillaceous Athens Augusta County Benbolt limestone buff CaCO3 CaCOs cent calcium carbonate cent magnesium carbonate Chambersburg Chepultepec cherty Clarke County clayey Clinch coarse grained cobbly compact Conococheague contains Covered interval dark bluish-gray dark-gray Dolomite dove-gray Elbrook Eocene exposed exposures fault Feet Mosheim limestone feet thick fine-grained Five Oaks Frederick County granular gray half a mile high-calcium limestone impure limestone intercalated layers light-gray lime limestone and dolomite limestone at locality limestone belt magnesium carbonate Massanutten Mountain medium grained MgCO3 MgCOs miles northeast miles southwest Mudrock nodular northwest oolitic Page County R2Os Ridge Road Rockdell Rockdell limestone Rockingham County Russell County sandstone shale shaly Shenandoah County Shenandoah River Shenandoah Valley SiO2 southeast southwestward sparsely cherty Staunton stone syncline Tazewell County thick bedded Thickness Feet Mosheim thickness sampled thin bedded Tomstown U. S. Geol U. S. Highway vicinity Virginia Thickness Feet weathers western