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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Results 1-3 of 18
Page 21
... to one percent accuracy in actual field surveys . At a coil separation of 100 m . , a change in the distance by 1 % introduces an error of about 3 % in the in - phase component . A geologic noise of 3 to 4 % , or even higher , exists in ...
... to one percent accuracy in actual field surveys . At a coil separation of 100 m . , a change in the distance by 1 % introduces an error of about 3 % in the in - phase component . A geologic noise of 3 to 4 % , or even higher , exists in ...
Page 23
Geological Survey of India. conductivity size parameter 16-14 mhos corresponding to dip 40 ° —60 ° south . Drilling operations have intersected a mineralised zone of galena , chalcopyrite and pyrite in ... phase in relation to the primary ...
Geological Survey of India. conductivity size parameter 16-14 mhos corresponding to dip 40 ° —60 ° south . Drilling operations have intersected a mineralised zone of galena , chalcopyrite and pyrite in ... phase in relation to the primary ...
Page 35
... to the top of the causative body are estimated to be in range 20 to 50 m . Over the prominent S. P. negative centres , the E. M. surveys have encountered pronounced anomalies . The ratio of in - phase and out - of - phase components is ...
... to the top of the causative body are estimated to be in range 20 to 50 m . Over the prominent S. P. negative centres , the E. M. surveys have encountered pronounced anomalies . The ratio of in - phase and out - of - phase components is ...
Contents
RECORDS | 1 |
Geophysical Problems and Methods by L | 16 |
Mining Geophysics by P C Paul Y R Bhanu | 31 |
Copyright | |
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Common terms and phrases
airborne alluvium anomaly zones Archaean 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 dolomite electrical logging electrical resistivity fault field formations frequency G. S. I. report geological mapping Geological Survey Geophysical investigations geophysical logging geophysical methods geophysical parties led geophysical surveys gneisses Gondwana graphite gravity groundwater groundwater exploration high resistive horizons in-phase indicated Indo-Gangetic plains Induced Polarisation Kailasam layer limestone locating log trace magnetic anomalies magnetic method magnetic surveys mineralised zone minerals Mining Geophysics negative S. P. ohm-m overburden phyllites Pradesh problem profiles quartzites radioactivity Rajasthan refraction seismic resistivity method resistivity surveys S. P. anomalies saline sandstones schists sedimentary sediments seismic method seismic refraction self-potential anomalies shales structural studies Subathu subsurface sulphide Survey of India surveys were carried terrace deposits Test drilling thickness tion velocity