Records of the Geological Survey of India, Volume 128, Part 3Vols. 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 54
Apart from these lithounits , metabasites of variable thickness were found to occur
concordantly both within the gneisses and the Daling Group of rocks . Small
leucogranite and pegmatite bodies seem to occur at a few places as intrusive ...
Apart from these lithounits , metabasites of variable thickness were found to occur
concordantly both within the gneisses and the Daling Group of rocks . Small
leucogranite and pegmatite bodies seem to occur at a few places as intrusive ...
Page 150
This also occurs as fracture filling ( secondary ) in feldspars . Green biotite ,
chlorite , traces of amphibole , flourite and carbonate occurs as accessory phases
. Granules of garnet , orthopyroxene and idiomorphic magnetite occur in the
sample ...
This also occurs as fracture filling ( secondary ) in feldspars . Green biotite ,
chlorite , traces of amphibole , flourite and carbonate occurs as accessory phases
. Granules of garnet , orthopyroxene and idiomorphic magnetite occur in the
sample ...
Page 168
The milky white and smoky grey quartz veins occur within different lithounits . The
rocks show three phases of folding associated with local shearing . The tight
isoclinal , reclined to recumbent ( F , ) folds occur in rootless form within cherty ...
The milky white and smoky grey quartz veins occur within different lithounits . The
rocks show three phases of folding associated with local shearing . The tight
isoclinal , reclined to recumbent ( F , ) folds occur in rootless form within cherty ...
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Contents
Coastal studies and Neotectonics | 5 |
Chhotonagpur Gneiss East | 12 |
Investigation for copper and associated mineralisation | 18 |
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Common terms and phrases
Andaman anomaly apatite associated bands base basemetal basic basin belt Bihar block body boreholes carried clay Code collected complex conglomerate construction continued covered deposits depth detailed Director district Division drilling east Eastern Engineering exploration exposed extension faults FIELD SEASON fold Formation GEOLOGICAL MAP geophysical geotechnical gneiss gold grade grained granite granite gneiss gravity Group INDEX indicate intersected intrusive Island land length lineaments located magnetic major mineralisation minerals nature occur Orissa OVERVIEW phyllite places Plate potential present Project proposed quartz quartz veins quartzite recorded regional REPORTS represented river road rocks samples sand scale schist sector sediments sequence sericite shear zone Singhbhum slope soil sq km stage strike structural suggested surface SURVEY SURVEY OF INDIA taken thick tion trending types values volcanics West Bengal western