Records of the Geological Survey of India, Volume 129, Parts 4-5The Survey, 1994 - 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 49
... biotite . At least two generation of migmatites could be identified in the area— ( i ) where schist and gneiss occur in close association , and ( ii ) where younger granitoids intrude the Se La Group of rocks . The mineral constituents ...
... biotite . At least two generation of migmatites could be identified in the area— ( i ) where schist and gneiss occur in close association , and ( ii ) where younger granitoids intrude the Se La Group of rocks . The mineral constituents ...
Page 105
... biotite gneiss Charnockite Group Metasedimentary Group Charnockite ( intermediate ) with minor lenses of meta ... biotite sillimanite gneiss Hypersthene gneiss Calc gneiss / marble Mafic granulite Quartzite garnet ± diopside sillimanite ...
... biotite gneiss Charnockite Group Metasedimentary Group Charnockite ( intermediate ) with minor lenses of meta ... biotite sillimanite gneiss Hypersthene gneiss Calc gneiss / marble Mafic granulite Quartzite garnet ± diopside sillimanite ...
Page 111
... biotite and quartz in the pressure shadow region is a conspicuous feature observed in mylonites . Mi- nor NE ... biotite gneiss , garnet - biotite- sillimanite gneiss , garnet - quartzo - feldspathic gneiss ( leptynite ) . The migmatite ...
... biotite and quartz in the pressure shadow region is a conspicuous feature observed in mylonites . Mi- nor NE ... biotite gneiss , garnet - biotite- sillimanite gneiss , garnet - quartzo - feldspathic gneiss ( leptynite ) . The migmatite ...
Contents
Resource Survey for dimensional stones of Mylliem Granite East Khasi Hills District Meghalaya | 4 |
ASSAM PROJECT 6 GEOLOGICAL MAPPING | 12 |
An Overview | 1 |
Copyright | |
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amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH anomaly Arunachal Pradesh Assam assessment auriferous banded iron formation beach bedrock BIF bands biotite block boreholes carried charnockite chert clay comprising delineated deposits depth dips dolerite drilling dykes east eastern emplaced ENE-WSW excavated exposed field season folds foliation Formation gabbro geochemical GEOLOGICAL MAP geophysical geotechnical investigations gneiss grade grained granite granite gneiss granulite gravity grey Group hill hornblende indicated intrusives joints KARNATAKA KERALA kimberlite laterite limestone lineament located mafic magnetic Meghalaya metabasalt migmatites mineral mineralised zones NE-SW NW-SE occur overburden pegmatite phyllite pink power house PROJECT pyrite quartz quartz veins quartzite regional ridge river rock types samples sand sandstone scale schist belt schistose sediments shale shear zone Shillong slope soil Specialised Thematic Mapping sq km strike length structural studies sulphides surface surveys TAMIL NADU thick traverses trenching trending tunnel ultramafic upto valley volcanics weathered width