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 17
... graphite . The mechanism of produc- tion of self - potential effects is not yet very clearly understood . One plausible explanation that has been suggested is that it arises from the oxidation of the aerated upper portion of the ore ...
... graphite . The mechanism of produc- tion of self - potential effects is not yet very clearly understood . One plausible explanation that has been suggested is that it arises from the oxidation of the aerated upper portion of the ore ...
Page 43
... Graphite Electrical and magnetic surveys carried out for graphite deposits in the Vellanad ( 8 ° 33 ′ : 77 ° 54 ′ ) , Aryanad , Keelathingal , Venganur and Chenganallur ( 8 ° 26 ′ : 77 ° 05 ′ ) areas of Trivandrum district , during the ...
... Graphite Electrical and magnetic surveys carried out for graphite deposits in the Vellanad ( 8 ° 33 ′ : 77 ° 54 ′ ) , Aryanad , Keelathingal , Venganur and Chenganallur ( 8 ° 26 ′ : 77 ° 05 ′ ) areas of Trivandrum district , during the ...
Page 44
... Graphite occurs as flakes associated with garnet and mica . Surface exposures of graphite in this area are in the nature of dissemina- tions in garnetiferous sillimanite - schists and garnetiferous quartzites . A number of promising ...
... Graphite occurs as flakes associated with garnet and mica . Surface exposures of graphite in this area are in the nature of dissemina- tions in garnetiferous sillimanite - schists and garnetiferous quartzites . A number of promising ...
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