Records of the Geological Survey of India, Volume 103The Survey, 1971 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
From inside the book
Results 1-3 of 29
Page 16
... field data . In the field of airborne geophysical prospecting for economic minerals , especially base metals , vigorous efforts in the refinement of instrumentation , field techniques and interpretational methods , especially in Canada ...
... field data . In the field of airborne geophysical prospecting for economic minerals , especially base metals , vigorous efforts in the refinement of instrumentation , field techniques and interpretational methods , especially in Canada ...
Page 23
... field of the same frequency but generally out of phase in relation to the primary field . This secondary field is detected above the conductor by a receiver coil of many turns . The continuous wave E. M. system employing low frequencies ...
... field of the same frequency but generally out of phase in relation to the primary field . This secondary field is detected above the conductor by a receiver coil of many turns . The continuous wave E. M. system employing low frequencies ...
Page 24
... field pulses of half - sine wave shape with a base width of roughly 1.5 milli sec . and spaced 2 milli sec . apart . These are generated through a large loop - antenna surrounding the survey aircraft . The primary field is discontinuous ...
... field pulses of half - sine wave shape with a base width of roughly 1.5 milli sec . and spaced 2 milli sec . apart . These are generated through a large loop - antenna surrounding the survey aircraft . The primary field is discontinuous ...
Contents
RECORDS | 1 |
Geophysical Problems and Methods by L | 16 |
Mining Geophysics by P C Paul Y R Bhanu | 31 |
Copyright | |
3 other sections not shown
Other editions - View all
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