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 56
... holes in dam site area , at HRT alignment / nala crossing ( probe holes ) , surge shaft and power house , drill core logging was done . The logging of drill core in dam site area proves that the depth of foundation grade rock varies ...
... holes in dam site area , at HRT alignment / nala crossing ( probe holes ) , surge shaft and power house , drill core logging was done . The logging of drill core in dam site area proves that the depth of foundation grade rock varies ...
Page 59
... hole intersected overburden and highly to moderately weathered granite at 1.90m depth followed by moderately to ... holes drilled at intake ( RL 132m ) , Surge shaft ( RL 151.92m ) and penstock area ( RL 144.23m ) has been done . BH ...
... hole intersected overburden and highly to moderately weathered granite at 1.90m depth followed by moderately to ... holes drilled at intake ( RL 132m ) , Surge shaft ( RL 151.92m ) and penstock area ( RL 144.23m ) has been done . BH ...
Page 60
... holes aggregating a total length of 139.8m was done . The boreholes were drilled on the left bank at dam axis . The ... hole is 28.8m . The borehole encountered overburden to a depth of 50cm underlain by porphyroblastic granite gneiss ...
... holes aggregating a total length of 139.8m was done . The boreholes were drilled on the left bank at dam axis . The ... hole is 28.8m . The borehole encountered overburden to a depth of 50cm underlain by porphyroblastic granite gneiss ...
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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