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 1
... porphyritic granite around Pariong , Nongstoin and Nongkasen areas in west Khasi Hills District , Meghalaya . ii ... granite gneiss , charnockite , amphibolite , grey biotite gneiss , gabbro anorthosite / anorthosite , norite , gabbro ...
... porphyritic granite around Pariong , Nongstoin and Nongkasen areas in west Khasi Hills District , Meghalaya . ii ... granite gneiss , charnockite , amphibolite , grey biotite gneiss , gabbro anorthosite / anorthosite , norite , gabbro ...
Page 3
... porphyritic granite . The rock is very coarse grained and porphyritic with biotite as the phenocrysts . Plagioclase , hypersthene , biotite , hornblende , magnetite with minor quartz and K- feldspar form the rock forming minerals ...
... porphyritic granite . The rock is very coarse grained and porphyritic with biotite as the phenocrysts . Plagioclase , hypersthene , biotite , hornblende , magnetite with minor quartz and K- feldspar form the rock forming minerals ...
Page 4
... porphyritic granite and gabbroic anorthosite with horizontally disposed clayey sandstone ( 25 to 30 m thick ) overlain by 1 to 1.5 m thick clay stone band . The claystone also contains irregular imprints presumably of fossil twigs ...
... porphyritic granite and gabbroic anorthosite with horizontally disposed clayey sandstone ( 25 to 30 m thick ) overlain by 1 to 1.5 m thick clay stone band . The claystone also contains irregular imprints presumably of fossil twigs ...
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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