Records of the Geological Survey of India, Volume 127, Part 2The Survey, 1992 - 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 131
... sericite - chlorite phyllite , whose foliation is defined by parallely alligned sericite- chlorite flakes and elongated quartz grains . Coarse grained hypidiomorphic calcite grains generally occur in layers . Some of the slides exihibit ...
... sericite - chlorite phyllite , whose foliation is defined by parallely alligned sericite- chlorite flakes and elongated quartz grains . Coarse grained hypidiomorphic calcite grains generally occur in layers . Some of the slides exihibit ...
Page 143
... Sericite nchi.t : 5. Quartzite : 6. Rock : contact : 7 . Inferred contact ; 8. Shear some and 9. Drill hole . GEOTECHNICAL INVESTIGATION OF WANG CHU RESERVOIR SCHEME , BHUTAN (. Fig . 2 N 25 ° → 25 € 1600-00 1500 : 00 1250-00 1000-00 ...
... Sericite nchi.t : 5. Quartzite : 6. Rock : contact : 7 . Inferred contact ; 8. Shear some and 9. Drill hole . GEOTECHNICAL INVESTIGATION OF WANG CHU RESERVOIR SCHEME , BHUTAN (. Fig . 2 N 25 ° → 25 € 1600-00 1500 : 00 1250-00 1000-00 ...
Page 144
... sericite schist in 5 % to 10 % reach . The Rockmass Quality Index ' Q ' varies from 13.2 to 28 for hard and fresh quartzite ; 7.6 to 8.9 for amphibolite schist , 0.24 to 0.88 for sericite schist and 0.01 for sheared sericite schist and ...
... sericite schist in 5 % to 10 % reach . The Rockmass Quality Index ' Q ' varies from 13.2 to 28 for hard and fresh quartzite ; 7.6 to 8.9 for amphibolite schist , 0.24 to 0.88 for sericite schist and 0.01 for sheared sericite schist and ...
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Common terms and phrases
aeromagnetic airborne amphibolite AMSE Wing analysis ANDHRA PRADESH anomalies bands Barakar Barakar Formation Barren Measures basement basin Bengal BHUTAN Bihar biotite block boreholes carbonaceous charnockite Chekha clay coal seams COAL WING Coalfield coarse Code cores covered cruise depth range DISTRICT Division dolomite drilling east eastern exploration for coal faults field season fold geochemical GEOLOGICAL MAP gneiss Gondwana grained granite gneiss gravity grey ground evaluation heavy mineral indicate intersected intrusives investigation isobath Kamthi LAMPROITE lamprophyres lignite lineament located MADHYA PRADESH magnetic metabasalt metamorphism migmatites million tonnes mineralisation multisensor NW-SE occur Orissa phyllite programme Proterozoic quartz quartzite Raniganj Regional exploration ridge rocks Sakoli sand sandstone scale schist seabed seam zones sector sediments sequence shale shear zones Shumar slope southern sq km strike length structural studies sub-basin sub-surface Talchir Tamil Nadu tectonic thickness Thimphu Thimphu Formation toposheet trending upto varies