Records of the Geological Survey of India, Volume 84Geological Survey of India, 1953 - 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 463
... thin white quartz veins with an average width of about 3/16 in . In thin section ( 27251 ) , the rock is essentially composed of angular quartz grains showing numerous dusty specks as inclusions which are , however , strikingly absent ...
... thin white quartz veins with an average width of about 3/16 in . In thin section ( 27251 ) , the rock is essentially composed of angular quartz grains showing numerous dusty specks as inclusions which are , however , strikingly absent ...
Page 464
... thin section ( 27265 ) angular pieces of dark pink jasper ( sometimes banded ) and quartz , cemented by quartz grains . Another conglomerate pebble shows only a few pebbles of jasper , in a predominantly quartzose matrix . V. Quartz ...
... thin section ( 27265 ) angular pieces of dark pink jasper ( sometimes banded ) and quartz , cemented by quartz grains . Another conglomerate pebble shows only a few pebbles of jasper , in a predominantly quartzose matrix . V. Quartz ...
Page 465
... thin section ( 27258 ) the rock shows mainly hornblende , chlorite , plagioclase ( altered to zoisite ) and leucoxene . A boulder of medium - grained dolerite ( 61/614 ) from the Parewa nala south of Tunni Dand , shows in thin section ...
... thin section ( 27258 ) the rock shows mainly hornblende , chlorite , plagioclase ( altered to zoisite ) and leucoxene . A boulder of medium - grained dolerite ( 61/614 ) from the Parewa nala south of Tunni Dand , shows in thin section ...
Contents
ENGINEERING GEOLOGYcontd | 8 |
MINERAL INVESTIGATIONS | 21 |
ENGINEERING GEOLOGY | 117 |
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alignment Archaean Assam Assistant Geologist B. C. Roy bands bank beryl Bihar Bombay Calcutta cement cent charnockites coal coalfield colour Cuddapah dam-site days with effect deposits depth dolomite drilling Dungri dykes east Engineering Geology estimated examined excavation feet furlongs Geol geological mapping Geological Survey geophysical Ghosh gneisses Gondwana grade granite Ground-Water hill inches India investigation iron-ore Journ Kutch kyanite laterite left abutment lignite lime limestone M. S. Krishnan Madhya Pradesh Madras manufacture material Messrs mica miles mineral mines Mirzapur district Mysore nala north-west occur ochre Orissa outcrops pegmatites phyllites pits production quantity quarries quartz veins quartzites railway Rajasthan reported reserves Returned to headquarters river bed rocks samples sand sandstones schists seam shales sheet Singhbhum south-west strike suitable Survey of India taluk thickness thin tunnel Uttar valley village 23 Vindhya Pradesh width zone