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 70
... present in the Khasi Greenstones . At places , they are also present as vein fill patches and clots . Magnetite is also occasionally present . Both sulphides and magnetite are insignificant . The Dibang Valley ultramafics are exposed ...
... present in the Khasi Greenstones . At places , they are also present as vein fill patches and clots . Magnetite is also occasionally present . Both sulphides and magnetite are insignificant . The Dibang Valley ultramafics are exposed ...
Page 71
... present , the Khasi Greenstones occur as angular rafts , fragments and subrounded boulders within the granites as xenoliths . One such place is at Umiam river bed near Umroi airport . The rocks are highly jointed . The prominent sets of ...
... present , the Khasi Greenstones occur as angular rafts , fragments and subrounded boulders within the granites as xenoliths . One such place is at Umiam river bed near Umroi airport . The rocks are highly jointed . The prominent sets of ...
Page 79
... present . In overall assemblage , Family Nummulitidae bredominates , of which genus Nummulites overwhelms in perentage as well as in numbers . But at a few places , Discocyclinidae percentage seems greater than Num- mulitidae . Both ...
... present . In overall assemblage , Family Nummulitidae bredominates , of which genus Nummulites overwhelms in perentage as well as in numbers . But at a few places , Discocyclinidae percentage seems greater than Num- mulitidae . Both ...
Contents
LIMESTONE INVESTIGATION Ops I Meghalaya | 6 |
An Overview | 17 |
Quaternary geology and geomorphological mapping of the Brahmaputra Valley | 23 |
Copyright | |
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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