Records of the Geological Survey of India, Volume 127, Part 4The Survey, 1995 - 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
... cover sediments . Lithologically , the Shillong Group is represented by quartzite , phyllitic quartzite and subordinate phyllite . Various lithofacies merge into each other lateraly . The quartzite is off - white to white , medium to ...
... cover sediments . Lithologically , the Shillong Group is represented by quartzite , phyllitic quartzite and subordinate phyllite . Various lithofacies merge into each other lateraly . The quartzite is off - white to white , medium to ...
Page 60
... cover Denudational / Structural hills ( Precambrian ) Gneisses and coarse grained por- phyritic granites above msl with northerly / northwesterly gradiant and ter- minates abruptly at the northerly facing 2-4m scarp in contact with the ...
... cover Denudational / Structural hills ( Precambrian ) Gneisses and coarse grained por- phyritic granites above msl with northerly / northwesterly gradiant and ter- minates abruptly at the northerly facing 2-4m scarp in contact with the ...
Page 82
... cover . The rocks at this site strike almost perpendicular to the tunnel alignment and sufficient rock cover above the portal is available . The proposed HRT will be excavated through folded quartzites and schists intruded by basic ...
... cover . The rocks at this site strike almost perpendicular to the tunnel alignment and sufficient rock cover above the portal is available . The proposed HRT will be excavated through folded quartzites and schists intruded by basic ...
Contents
AssamMeghalaya TripuraMizoram and ManipurNagaland | 3 |
Geological Mapping TripuraMizoram | 23 |
Geological Mapping ManipurNagaland | 29 |
Copyright | |
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Common terms and phrases
Abor volcanics abutment Aizawl alignment amphibolite anomaly anticlines arenaceous argillaceous ARUNACHAL PRADESH Assam axial bands Barail Group bed rock Bhuban Formation block Bokabil bore holes boreholes Brahmaputra Buxa Formation Chandel districts channel chromite clay dam axis deposits depth Disang dolomite drilling East Siang East Siang district Engineering Geology excavated exposed faults field season fold geochemical geomorphological geotechnical gneiss grey Group of rocks harzburgite hill indicated investigation Jorhat limestone lithological lithounits located LUNGLEI DISTRICTS Manipur medium grained Meghalaya mineral mineralisation MIZORAM NAGALAND nala NE-SW Noa Dihing occur Older Alluvial Plain ophiolite pelagic sediments Phyllite power house Precambrian Project proposed quartz quartzite Quaternary regional right bank river Samchampi samples sandstone schist sequence shale shear Shergaon Shillong Shillong Group silt siltstone slope sq.km structures studies sulphides surface Surma Group synclines systematic geological mapping terrace Tertiary thick Tipam traverses Tripura tunnel ultramafic Umpyrtha area unconformably upto veins Yinkiong zone