Records of the Geological Survey of India, Volume 142, Part 4The Survey, 2009 - 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 2
... Coarse to medium grained pink granite Porphyritic Granite Gabbroic anorthosite / anorthosite , norite , gabbro , diorite in association with quartz mangerite ( ? ) Pink granite gneiss and migmatitic banded gneiss Grey biotite gneiss ...
... Coarse to medium grained pink granite Porphyritic Granite Gabbroic anorthosite / anorthosite , norite , gabbro , diorite in association with quartz mangerite ( ? ) Pink granite gneiss and migmatitic banded gneiss Grey biotite gneiss ...
Page 3
... coarse grained and porphyritic . Plagioclase phenocrysts are aligned or randomly arranged in a dark mafic medium grained groundmass . At many places the gabbroic anorthosite randomly grades into anorthosite with increase of plagioclase ...
... coarse grained and porphyritic . Plagioclase phenocrysts are aligned or randomly arranged in a dark mafic medium grained groundmass . At many places the gabbroic anorthosite randomly grades into anorthosite with increase of plagioclase ...
Page 45
... coarse grained , massive , flaky , green to dark green . The fine grained variety occurs on the northern and southern boundaries of ultramafic suite of rocks . Near 65 km GREF camp , it shows complete serpentinisation . The massive ...
... coarse grained , massive , flaky , green to dark green . The fine grained variety occurs on the northern and southern boundaries of ultramafic suite of rocks . Near 65 km GREF camp , it shows complete serpentinisation . The massive ...
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Common terms and phrases
active fault alignment amphibolite anorthosite arsenic Arunachal Pradesh Assam bands basic granulite biotite biotite gneiss charnockite clay coarse grained core logging dam axis depth DETAILED CORRIDOR MAPPING dipping DIVISION REVIEW drill East Khasi Hills exposed feldspar field season fold foliation Formation gabbroic anorthosite Geochemical Mapping geological mapping geotechnical investigation gneiss granite granulite gravity grey H.E. Project Hazard Zone Imphal Jaintia Hills district Kakching Khasi Hills district Leikai located Lower Dibang Valley mapped area Mawpyut Mayudia Meghalaya metamorphism minerals Mizoram NE-SW overburden phyllite pink granite gneiss plagioclase porphyritic porphyritic granite power house Proterozoic quartz quartzite Ri-Bhoi Riangdo river sandstone scale schist shale Shillong sillimanite silt siltstone slope stations studies surge shaft tectonic thick toposheet trend West Kameng district West Khasi West Khasi Hills इस एवं का कार्य की के को जनपद टोपोशीट सं तथा पर भूवैज्ञानिक मानचित्रण किया गया मेघालय वर्ग से हेतु है