Records of the Geological Survey of India, Volume 122, Part 8The Survey, 1987 - 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 12
... pegmatite ) in quarry sections . Hydrothermal activity in the area is evident by pegmatite dykes , vein quartz and sporadic sulphide mineralisation in quartzite . Further , highly iron rich coarse grained quartzite in vicinity of sand ...
... pegmatite ) in quarry sections . Hydrothermal activity in the area is evident by pegmatite dykes , vein quartz and sporadic sulphide mineralisation in quartzite . Further , highly iron rich coarse grained quartzite in vicinity of sand ...
Page 122
... pegmatite bodies ( 10-250m x 5-50m ) intrude the granite and the country rock . Schist and quartzite xenoliths of varying sizes occur within the granitoid body at several places . In Rarang -- Akpa area , the Rakcham Granite intrudes ...
... pegmatite bodies ( 10-250m x 5-50m ) intrude the granite and the country rock . Schist and quartzite xenoliths of varying sizes occur within the granitoid body at several places . In Rarang -- Akpa area , the Rakcham Granite intrudes ...
Page 126
... pegmatite , quartz veins and structural characteristics , such as close jointing / shearing etc. which might have acted as channels for the localisation of the minerals by hydrothermal activity . A total of 100 sq km area was covered by ...
... pegmatite , quartz veins and structural characteristics , such as close jointing / shearing etc. which might have acted as channels for the localisation of the minerals by hydrothermal activity . A total of 100 sq km area was covered by ...
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Common terms and phrases
aeolian alignment Alluvial Alluvium bands basin biotite borehole calcareous Central Crystalline CHAMOLI CHAMOLI DISTRICT channel clay comprising construction covered deposits depth dolomite downstream drill hole dunes excavation exposed fault field season folds foliation Formation Ganga Geol geological mapping GEOMORPHOLOGICAL geophysical glacier gneiss grained granite Granitoid HARYANA head race tunnel HIMACHAL PRADESH HYDEL PROJECT India indicated JAMMU AND KASHMIR joints kankar km long Krol Kulu Kumar landslide left bank limestone lineament Lithology lithostratigraphy located logging metres micaceous mineralisation Murree nala Older Alluvium pegmatite penstock phyllite PITHORAGARH DISTRICT plane proposed quartzite Quaternary Recent Flood Plain regional right bank river road rocks samples sand sandstone scale schist sediments sequence shale Sharma shear zone silt siltstone Singh Siwalik slate slope Spiti sq km Srivastava STAGE GEOLOGICAL INVESTIGATIONS studies surface power house Surv tectonic terrace Tethyan thick Thrust toposheet trending Triassic upstream upto UTTAR PRADESH valley