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 4
... zone as proved by borehole intersec- tions ( Basu and Agarwal , 1981-86 ) is located along the north- ern limb of a synform , and is confined mostly to the an- thophyllite - grunerite and hornblende - cummingtonite - cor- dierite ...
... zone as proved by borehole intersec- tions ( Basu and Agarwal , 1981-86 ) is located along the north- ern limb of a synform , and is confined mostly to the an- thophyllite - grunerite and hornblende - cummingtonite - cor- dierite ...
Page 35
... zones . The lithounits of the area show low grade hydrothermal and green schist facies metamorphism . Minor chromite ... zone occurs at the contact of serpentinised harzburgite with sheared serpentinite . The petrographic and ...
... zones . The lithounits of the area show low grade hydrothermal and green schist facies metamorphism . Minor chromite ... zone occurs at the contact of serpentinised harzburgite with sheared serpentinite . The petrographic and ...
Page 107
... zone over Gangjang plateau is well corroborated with the three inter- secting faults demarcated on the lineament map of North East India . A broad magnetic low zone with isolated closures was observed around Samchampi , Nepali Basti ...
... zone over Gangjang plateau is well corroborated with the three inter- secting faults demarcated on the lineament map of North East India . A broad magnetic low zone with isolated closures was observed around Samchampi , Nepali Basti ...
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