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 17
... Sandstone Formation Medium to coarse grained fer- ruginous sandstone with in- traformational oligomictic con- glomerate and profuse silicified fossil wood . Gradational Contact- Surma Group Bokabil Formation Yellowish brown , medium to ...
... Sandstone Formation Medium to coarse grained fer- ruginous sandstone with in- traformational oligomictic con- glomerate and profuse silicified fossil wood . Gradational Contact- Surma Group Bokabil Formation Yellowish brown , medium to ...
Page 24
... sandstone . Sandstone is moderately hard , compact and very fine grained -Base not exposed- The area contains very thick sequence of interbedded shale , sandstone , siltstone and their admixtures in varying propor- tions belonging to ...
... sandstone . Sandstone is moderately hard , compact and very fine grained -Base not exposed- The area contains very thick sequence of interbedded shale , sandstone , siltstone and their admixtures in varying propor- tions belonging to ...
Page 30
... sandstone and carbonaceous shale . Gradational Contact- Massive , multistoreyed , medium grained , grey sandstone interbedded with sandy shale and siltstone along with minor coal streaks and car- bonised plant fragments . Gradational ...
... sandstone and carbonaceous shale . Gradational Contact- Massive , multistoreyed , medium grained , grey sandstone interbedded with sandy shale and siltstone along with minor coal streaks and car- bonised plant fragments . Gradational ...
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