Records of the Geological Survey of India, Volume 136, Parts 4-7Government of India, 2001 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 64
... structural settings favorable for mineralisation in the Shillong area. Tyrsad — Barapani shear zone is oriented in a northeast — southwest direction. Occurrences of Polymetallic sulfides, auriferous lodes and atomic minerals have been ...
... structural settings favorable for mineralisation in the Shillong area. Tyrsad — Barapani shear zone is oriented in a northeast — southwest direction. Occurrences of Polymetallic sulfides, auriferous lodes and atomic minerals have been ...
Page 28
... structural and chemical controls of mineralisation. The first borehole was drilled up to a depth of 935.45 m, intersecting metabasalt and meta acid volcanic rocks up to 346 m depth and granodiorite-tonalite, thereafter. This drillhole ...
... structural and chemical controls of mineralisation. The first borehole was drilled up to a depth of 935.45 m, intersecting metabasalt and meta acid volcanic rocks up to 346 m depth and granodiorite-tonalite, thereafter. This drillhole ...
Page 176
... structural set up of this tectonic zone which was proved to be auriferous. The valley disposed in NE-SW direction lies sandwiched between the Nilgiris to the north and Vellingiri hill ranges to the south. The configuration of the valley ...
... structural set up of this tectonic zone which was proved to be auriferous. The valley disposed in NE-SW direction lies sandwiched between the Nilgiris to the north and Vellingiri hill ranges to the south. The configuration of the valley ...
Contents
EXTENDED ABSTRACTS OF PROGRESS REPORTS | 5 |
MEGHALAYA MINERAL INVESTIGATION PROJECT | 11 |
RECORDS VOLUME 136 PART5 | i |
Copyright | |
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amphibolite Andhra Pradesh anomaly auriferous bands basalt base metals basin bedrock biotite block boreholes carried charnockite clay collected comprising Construction stage geotechnical covered Cuddapah deformation delineated depth district dolerite dolomite drilling dykes east excavation exploration exposed fault feldspar field field season folds foliation Formation foundation fracture geoenvironmental geological mapping geophysical geotechnical investigation gneiss gneissic gold values grained granite granite gneiss granitoids gravity grey grouting indicated intersected intrusive joints kimberlite limestone lineaments lithounits located magnetic Meghalaya migmatite mineralised zone minerals NE-SW NNW-SSE NW-SE occur overburden pegmatite phyllite plagioclase porphyritic quartz quartz veins quartzite Rajasthan regional River rock samples sand sandstone scale schist schist belt shear zone slope soil sq km stage geotechnical investigation stream sediment strike length structural studies sulphide Supergroup surface surveys syenite Tamil Nadu tectonic thick toposheet traverse trench trending Udaipur district ultramafic village volcanics weathered width