Records of the Geological Survey of India, Volume 79Geological 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 73
... Slate Co. , must be very large . At present slate is exclusively quarried for manufacture of roofing- slate , so that all rocks which cannot be split into thin slates must be considered as waste . No attempt has so far been made for the ...
... Slate Co. , must be very large . At present slate is exclusively quarried for manufacture of roofing- slate , so that all rocks which cannot be split into thin slates must be considered as waste . No attempt has so far been made for the ...
Page 74
Geological Survey of India. from greenish clay - slates with irregular and ill - developed cleavage , through pink , grey and dark slates of medium quality , to good dark grey slates . The general strike of the cleavage is N.30 ° E - S ...
Geological Survey of India. from greenish clay - slates with irregular and ill - developed cleavage , through pink , grey and dark slates of medium quality , to good dark grey slates . The general strike of the cleavage is N.30 ° E - S ...
Page 564
... slates of good quality . The maximum thickness of the slate band so far exposed is about 120 feet . Here the slates crop out at the surface but are generally weathered to a depth of 3 to 4 feet below which the quality improves . maximum ...
... slates of good quality . The maximum thickness of the slate band so far exposed is about 120 feet . Here the slates crop out at the surface but are generally weathered to a depth of 3 to 4 feet below which the quality improves . maximum ...
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Common terms and phrases
A. K. Dey Aiyengar alluvium Assam Assistant Geologist B. C. Roy Baluchistan bands bauxite beds Bengal Bihar Bombay boulders Burma Calcutta cent Central Provinces charnockites chaung clay Clegg coal colour Congr Cretaceous deposits depth dolomites east Eastern Eastern States Agency examined feet thick ferruginous field fossils Geol Geological Survey Ghosh gneisses Gondwana graphite grey hill inches investigation J. B. Auden Journ khondalites Koraput district laterite limestone M. S. Krishnan Madras Party mapping Messrs mica miles mineral mines nala occur Orissa outcrop Party and left pegmatites phyllites Proc Provinces Party Punjab pyrites quarries quartz veins quartzites railway reports the occurrence Returned to headquarters ridge river road rocks Sahni Sambalpur Sambalpur district sand sandstones schists seam shales sheet Siwalik slates soil specimens sulphur Surv Survey of India tons Trichinopoly tube-wells United Provinces village water supply wolfram