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Application of Seismography to Geological Problems Eugene McDermotl
EARTH RESISTIVITIES AT DEPTHS LESS THAN ONE HUNDRED
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accuracy alluvium alternating current anomalies anticline apparent resistivity applied approximately axis beds blasting cap calculated curvature curve density depth determined direction distance drilling earth effect electrical methods electrode equation Esperson Bldg exploration fault feet formations geologic geologist geophysical methods Geophysical Prospecting geophysicist Gish-Rooney gradient granite Gulf Coast high trend hole horizontal Houston indicated instrument interpretation layer limestone magnetic high magnetometer measurements meters observed obtained oil field Oklahoma Ouachita Mountains Pecan Gap pendulum Petroleum plane position possible potential potential-drop-ratio method probable error problem radon ratio records reflection seismograph refraction region relative gravity resistivity methods rocks salt dome sand Schlumberger seismic seismograph shale shooting shot point shown in Figure shows soil station interval strata structure subsurface surface Swedish American temperature Texas thickness tion torsion balance torsion balance surveys traverses Tulsa variation vectors velocity Vermilion Bay vertical wave