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 5
... ground . In airborne radiometry the natural radioactivity of the rocks is measured from an aircraft flown at an altitude of 150 m . or less by means of scintillometers or gamma ray spectrometers along flight lines 1.5 km . apart , with ...
... ground . In airborne radiometry the natural radioactivity of the rocks is measured from an aircraft flown at an altitude of 150 m . or less by means of scintillometers or gamma ray spectrometers along flight lines 1.5 km . apart , with ...
Page 6
... ground , gamma ray activity from the radio nuclides in the air and from cosmic rays also affect the instrument . The aerial scintillometer can detect differences of as little as 0.002 % equivalent uranium content of the rock from an ...
... ground , gamma ray activity from the radio nuclides in the air and from cosmic rays also affect the instrument . The aerial scintillometer can detect differences of as little as 0.002 % equivalent uranium content of the rock from an ...
Page 74
... ground vibration , as the ground selects or produces damped oscillatary vibra- tions at its resonance frequency in response to the impact . Mechanical vibration produced by a number of heavy machines were also recorded to obtain the ...
... ground vibration , as the ground selects or produces damped oscillatary vibra- tions at its resonance frequency in response to the impact . Mechanical vibration produced by a number of heavy machines were also recorded to obtain the ...
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