Records of the Geological Survey of India, Volume 128, Part 4The Survey, 1996 - 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
... quartz veins were iden- tified cutting across banded gneisses . In 1993-94 F.S. , emphasis was shifted to test the extension of the already identified molybdenite - bearing quartz veins located near Nongchram . The present work under P ...
... quartz veins were iden- tified cutting across banded gneisses . In 1993-94 F.S. , emphasis was shifted to test the extension of the already identified molybdenite - bearing quartz veins located near Nongchram . The present work under P ...
Page 22
... quartz wackes are gradational into sandstone having subrounded quartz within matrix . The Tipam Group of sediments have been divided into lower Tipam Sandstone Formation and Girujan Clay For- mation . The Tipam Sandstone Formation ...
... quartz wackes are gradational into sandstone having subrounded quartz within matrix . The Tipam Group of sediments have been divided into lower Tipam Sandstone Formation and Girujan Clay For- mation . The Tipam Sandstone Formation ...
Page 46
... quartz , felspar , biotite + garnet and sillimanite . Schists are also a dominent unit of the older metamorphics and consist of fine grained biotite schist , mica schist , with flattened discs of aggregate of quartz pebbles and ...
... quartz , felspar , biotite + garnet and sillimanite . Schists are also a dominent unit of the older metamorphics and consist of fine grained biotite schist , mica schist , with flattened discs of aggregate of quartz pebbles and ...
Contents
LIMESTONE INVESTIGATION Ops I Meghalaya | 6 |
An Overview | 17 |
Quaternary geology and geomorphological mapping of the Brahmaputra Valley | 23 |
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Common terms and phrases
Aizawl AIZAWL DISTRICT arenaceous argillaceous Arunachal Pradesh Assam bands Barail Group Bhuban Formation biotite Bokabil borehole CACHAR clay coal Code comprises Dauki Fault Dibang Valley Disang Group DIVISION An Overview dolomite East Siang Eocene erosion excavation exposed field season fold Geoenvironmental geotechnical gneiss granite granitoids grey indicate JAINTIA HILLS DISTRICT joint KALIYANI LINEAMENT Karbi Anglong District Khasi Greenstones Kopili Kumar limestone Litang lithostratigraphy lithounits located medium grained Meghalaya mineral mineralisation Mizoram molybdenite Mukatung Nagaland NE-SW North Eastern Region occur overlain pegmatitic power house prone areas Quaternary Ranganadi river rockmass samples sandstone scale schist sediments Sela Group sequence shale shear Shella Formation Shillong Siang District Sibsagar siltstone slope soil sq.km structure Surma Surma Group Survey of India Sylhet synclinal systematic geological mapping tectonic Tertiary thick TINSUKIA DISTRICT tion Tipam Group toposheet traverse trend TRIPURA tunnel ultramafic Unconformity West Kameng district zone