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 111
... places intruded by pink granite , quartz and pegmatite veins . Develop- ment of porphyroblasts of feldspars with selvages of biotite and quartz in the pressure shadow region is a conspicuous feature observed in mylonites . Mi- nor NE ...
... places intruded by pink granite , quartz and pegmatite veins . Develop- ment of porphyroblasts of feldspars with selvages of biotite and quartz in the pressure shadow region is a conspicuous feature observed in mylonites . Mi- nor NE ...
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... places . In the latter pyroxenite , the amount of bronzite and enstatite varies from place to place . In all , six pyroxenite bands are demorcated in the Torappadi hill area . The width of these bands varies from 10 to 35m and length ...
... places . In the latter pyroxenite , the amount of bronzite and enstatite varies from place to place . In all , six pyroxenite bands are demorcated in the Torappadi hill area . The width of these bands varies from 10 to 35m and length ...
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... places , haematite . Ore petrographic studies of the sulphide - bearing samples of Mallappakonda indicate preferred localisation of sulphides in the amphibole - rich bands . The different ore minerals seen are arsenopyrite , pyrrhotite ...
... places , haematite . Ore petrographic studies of the sulphide - bearing samples of Mallappakonda indicate preferred localisation of sulphides in the amphibole - rich bands . The different ore minerals seen are arsenopyrite , pyrrhotite ...
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