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 19
... highly weathered and ferruginous , brown , medium to coarse grained and is moderately sorted . Large trunks of silicified fossil wood in supine state are quite common and are often associated with highly weathered and ferruginated ...
... highly weathered and ferruginous , brown , medium to coarse grained and is moderately sorted . Large trunks of silicified fossil wood in supine state are quite common and are often associated with highly weathered and ferruginated ...
Page 20
... highly tectonised margin of Naga schuppen belt on to the east . Geomorphological , and surface geological studies have led to the delineation of four Quaternary morphostratigraphic units , namely Silonijan Formation and / or Vihoku ...
... highly tectonised margin of Naga schuppen belt on to the east . Geomorphological , and surface geological studies have led to the delineation of four Quaternary morphostratigraphic units , namely Silonijan Formation and / or Vihoku ...
Page 60
... highly prone to annual / floods and bank erosion . Flood fringe area , prone to periodic / occassional floods . Deeply oxidised silt and clay beds . Predominantly sandy facies with minor pebbly / gritty horizon at the base and silt ...
... highly prone to annual / floods and bank erosion . Flood fringe area , prone to periodic / occassional floods . Deeply oxidised silt and clay beds . Predominantly sandy facies with minor pebbly / gritty horizon at the base and silt ...
Contents
AssamMeghalaya TripuraMizoram and ManipurNagaland | 3 |
Geological Mapping TripuraMizoram | 23 |
Geological Mapping ManipurNagaland | 29 |
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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