Records of the Geological Survey of India, Volume 126, Part 2Government of India, 1991 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 33
... lamproites have indicated radiogenic 87sr / 86Sr and unradiogenic 143Nd / 144Nd mantle sources . Similar isotopic composition has also been reported from con- tinental tholeiites . But as these are emplaced through thick continental ...
... lamproites have indicated radiogenic 87sr / 86Sr and unradiogenic 143Nd / 144Nd mantle sources . Similar isotopic composition has also been reported from con- tinental tholeiites . But as these are emplaced through thick continental ...
Page 45
... lamproitic dykes among intrusions of the East Bokaro coalfield . These rocks are being compared with the diamondiferous lamproites of other parts of the world . Banded iron formations are noted to comprise some very old sediments on the ...
... lamproitic dykes among intrusions of the East Bokaro coalfield . These rocks are being compared with the diamondiferous lamproites of other parts of the world . Banded iron formations are noted to comprise some very old sediments on the ...
Page 50
... lamproites ( 401-657 ppm ) . The olivine lamproites show moderate con- centration of REE ( 92-297 ppm ) . The chondrite normalised REE pattern shows a highly fractionated trend with ( La / Lu ) N varying between 56 and 166 ...
... lamproites ( 401-657 ppm ) . The olivine lamproites show moderate con- centration of REE ( 92-297 ppm ) . The chondrite normalised REE pattern shows a highly fractionated trend with ( La / Lu ) N varying between 56 and 166 ...
Contents
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 121 |
Geodata and Information Division | 141 |
Overview of the Deputy Director General | 195 |
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Common terms and phrases
aeromagnetic amphibolite analysis ANDHRA PRADESH anomalies bands Barakar Formation Barren Measures Formation basement basin belt Bengal Bihar Birbhum block boreholes calcareous carbonaceous carbonaceous shale clayey coal bearing coal seams COAL WING coarse grained Code cores covered cruise deposition DISTRICT drilled east EXPLORATION FOR COAL fault field season foraminifera geochemical GEOLOGICAL MAP geophysical gneiss Godavari Valley Gondwana grade grained sandstone granite heavy mineral INDEX intersected investigation isobath Kamthi Formation Lakshadweep lignite lime mud limestone located lower MADHYA PRADESH magnetic medium grained METAMORPHICS million tonnes mineralisation NW-SE occur ooids Orissa phyllite PLATE PLATE-I potentiality Precambrian quartz quartzite Rajmahal Raniganj Raniganj Formation Regional exploration ridge rocks Sakoli samples sand sandstone scale schist seam zones sector sediments sequence SHAHDOL DISTRICT shale shelf siltstone slope Sohagpur sq km strike studies sub-surface Survey of India Talchir Formation Toposheet trending upto VALLEY COALFIELD water depth