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S6 Geological and geomorphological mapping of Quaternary formation in Subamarekha
5000063360 scale covering quadrangle maps 73B
FIELD SEASON 198788
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ABSTRACTS OF PROGRESS alignment anorthosite apatite Assam basin bed rock belt Bhuban Bihar BIHAR Code biotite borehole carbonatite clay Construction stage geotechnical dam axis deposits depth dipping Disang Division-II drilling earth dam Engineering Geology Engineering Geology Division-IV excavation exposed ﬁeld FIELD SEASON ﬂood folds foliation Formation geochemical geological mapping Geology Division-IV Ops geophysical Geotech & Special Geotech and Special geotechnical investigation gneiss Gondwana granite granite gneiss graphite grouting hot springs indicate lepidolite limestone lineaments lithostratigraphy located mineral mineralisation nala occur Ophiolite Orissa ORISSA Code pegmatite phyllite plagioclase power house proposed quartz quartzite Quaternary Regional Geology Division Reservoir Scheme river rock types samples sand sandstone scale schist sediments shale shear zone Shillong Sikkim siltstone Sinha slope Special Investigation spillway sq km stage geotechnical investigation stage investigation structure surface Survey of India traverses trending tunnel upto veins West Bengal