Records of the Geological Survey of India, Volume 128, Part 4
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.
LIMESTONE INVESTIGATION Ops I Meghalaya
Quaternary geology and geomorphological mapping of the Brahmaputra Valley
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Aizawl AIZAWL DISTRICT arenaceous argillaceous Arunachal Pradesh Assam bands Barail Group biotite Bokabil borehole CACHAR clay coal coarse Code comprises Dauki Fault Dibang Valley Disang Group dolomite East Siang Eocene erosion excavation exposed field season fold Geoenvironmental geotechnical gneiss granite granitoids grey indicate joint KALIYANI LINEAMENT Karbi Anglong District Khasi Greenstones Khasi Hills 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 quartz veins Quaternary Ranganadi river rockmass samples sandstone scale schist sedimentary 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 Δ Δ