Records of the Geological Survey of India, Volume 103The Survey, 1971 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 27
... clay strata having velocities close to the velocities in sands . In a certain field survey , the dominant frequency of the refractions from the sandy aquifer was 400 c / sec . while that from the clay was only 200 c / sec . On the basis ...
... clay strata having velocities close to the velocities in sands . In a certain field survey , the dominant frequency of the refractions from the sandy aquifer was 400 c / sec . while that from the clay was only 200 c / sec . On the basis ...
Page 72
... clay beds to a depth of 3 to 10 m . Geophysical investigations were also conducted in the Koti terrace to estimate the thickness of the clay zones in the terrace deposits for an assessment of the impervious core material available at ...
... clay beds to a depth of 3 to 10 m . Geophysical investigations were also conducted in the Koti terrace to estimate the thickness of the clay zones in the terrace deposits for an assessment of the impervious core material available at ...
Page 78
... clay , gravel , shale- chips , boulders and good percentage of ferruginous materials . The clay and sand beds above 72 m . depth are respectively high and low radioactive horizons . Below 72 m . the sediments have high radioactivity and ...
... clay , gravel , shale- chips , boulders and good percentage of ferruginous materials . The clay and sand beds above 72 m . depth are respectively high and low radioactive horizons . Below 72 m . the sediments have high radioactivity and ...
Contents
OF | 1 |
Geophysical Problems and Methods by L | 14 |
Mining Geophysics by P C Paul Y R Bhanu | 31 |
Copyright | |
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airborne alluvium anomaly zones Archaean basin Bihar borehole buried channels Cambay causative body chalcopyrite chromite clay coal seams conductive zones conductor corroborated curves Deccan traps delineated deposits depth Dhauj and Kot district electrical logging electrical resistivity fault field formations frequency G. S. I. report geological mapping Geological Survey Geophysical investigations geophysical logging geophysical methods geophysical surveys gneisses Gondwana graphite gravity groundwater groundwater exploration high resistive horizons in-phase indicated Indo-Gangetic plains Induced Polarisation Kailasam layers limestone locating log trace magnetic anomalies magnetic method magnetic surveys magnetometers mineralised zones minerals Mining Geophysics Nair negative S. P. ohm-m overburden phyllites Pradesh problem profiles quartzites radioactivity Rajasthan refraction seismic resistivity method resistivity values S. P. anomalies sandstones schists sedimentary sediments seismic method seismic refraction self-potential anomalies shales structural studies Subathu subsurface sulphide surface Survey of India surveys were carried terrace deposits Test drilling thickness tion velocity