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 23
... rock types exposed comprise a huge thickness of alternations of sandstone , silstone and shale in varying proportions . The stratigraphic division of the rocks is made difficult by the paucity of key beds and absence of characteristic ...
... rock types exposed comprise a huge thickness of alternations of sandstone , silstone and shale in varying proportions . The stratigraphic division of the rocks is made difficult by the paucity of key beds and absence of characteristic ...
Page 26
... rocks of Surma Group . Biogenic structures in the form of burrows are common in the rocks of Bung Tlang Formation . Structurally the rocks are folded into near North - South trending longitudinal , sharp crested anticlines and ...
... rocks of Surma Group . Biogenic structures in the form of burrows are common in the rocks of Bung Tlang Formation . Structurally the rocks are folded into near North - South trending longitudinal , sharp crested anticlines and ...
Page 82
... rocks . They trend generally in NW - SE direction with local variations . At the proposed dam site , the folded ... rocks at this site strike almost perpendicular to the tunnel alignment and sufficient rock cover above the portal is ...
... rocks . They trend generally in NW - SE direction with local variations . At the proposed dam site , the folded ... rocks at this site strike almost perpendicular to the tunnel alignment and sufficient rock cover above the portal is ...
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