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 20
... valley , occupy more than 50 % of the area and confined to the dissected Shillong Plateau . These rocks are essentially medium to fine sandstones with shale and siltstones as intercalations . Sandstones are feldspathic in nature and on ...
... valley , occupy more than 50 % of the area and confined to the dissected Shillong Plateau . These rocks are essentially medium to fine sandstones with shale and siltstones as intercalations . Sandstones are feldspathic in nature and on ...
Page 37
... Valley district ; and the last was a research item to ascertain metallogenic characteristics of Oligo - Miocene granitoids in West Kameng district . Systematic geological mapping of an area of 205 sq . km . on 1 : 50,000 scale was ...
... Valley district ; and the last was a research item to ascertain metallogenic characteristics of Oligo - Miocene granitoids in West Kameng district . Systematic geological mapping of an area of 205 sq . km . on 1 : 50,000 scale was ...
Page 70
... Valley ultramafics are exposed between 46.6 and 65.2 km . stones on the Roing - Hunli road Dibang Valley district , Arunachal Pradesh . Petrological studies show presence of surpensinised dunite , serpentirised peridotite , serpentinite ...
... Valley ultramafics are exposed between 46.6 and 65.2 km . stones on the Roing - Hunli road Dibang Valley district , Arunachal Pradesh . Petrological studies show presence of surpensinised dunite , serpentirised peridotite , serpentinite ...
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