Bulletin, Ausgabe 34

anticline Appalachian Athens shale belt Blue Ridge fault Blue Ridge overthrust Blue Ridge Springs Botetourt County Brush Mountain calcareous Cambrian Carvins Catawba Mountain Catawba Sanatorium Catawba syncline Catawba Valley chert Chilhowie group Clinch sandstone Cloverdale coal Cove Coyners mountains crystalline rocks deposits Devonian dolomite east Elbrook formation erosion Erwin quartzite fault-block fenster folds Fort Lewis Mountain fossils geologic Helderberg hematite iron and manganese Knob Lewis Mountain limestone lower Martinsburg shale miles Mills Reeds mined Montgomery County Nittany dolomite North Mountain northeast northwest occur Ordovician outcrop overthrust block overthrust mass Ozarkian Paleozoic peneplane pre-Cambrian Price formation Pulaski fault Pulaski overthrust quarry quartzite region residual clays Roanoke area Roanoke County Roanoke River Roanoke Valley Rome Watauga Romney shale Salem fault sand sandstone sediments Shady dolomite shale Silurian slope southwest streams structure surface Survey Bull syncline thin thrust faults tion Upland peneplane Valley-floor peneplane Virginia Geol weathering