Records of the Geological Survey of India, Volume 68The Survey, 1935 - Earthquakes Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 40
... mica deposits of Nellore at great depths , and the relation of the presence of hornblende- and biotite - schists to the occurrence of mica ' . He was accompained by Mr. C. Sriramalu , the Officiating Mica Inspector of Nellore , pract ...
... mica deposits of Nellore at great depths , and the relation of the presence of hornblende- and biotite - schists to the occurrence of mica ' . He was accompained by Mr. C. Sriramalu , the Officiating Mica Inspector of Nellore , pract ...
Page 41
... mica mines ( including the most paying ones ) of the district . The mica belt between latitute 14 ° 3 ' and the Kandleru river , is marked by schistosity trending between N. W.-S. E. , and N. N. W.-S. S. E. , with high south - westerly ...
... mica mines ( including the most paying ones ) of the district . The mica belt between latitute 14 ° 3 ' and the Kandleru river , is marked by schistosity trending between N. W.-S. E. , and N. N. W.-S. S. E. , with high south - westerly ...
Page 42
... mica becomes brittle ; but the upper pegmatite continues in depth with its original direction of dip , and maintains the excellent character of its mica . In the Shah mine , the dip of the pegmatite changes from south - west to north ...
... mica becomes brittle ; but the upper pegmatite continues in depth with its original direction of dip , and maintains the excellent character of its mica . In the Shah mine , the dip of the pegmatite changes from south - west to north ...
Contents
P SONDHI Granted leave on average pay from | 8 |
ADMINISTRATIVE CHANGES | 11 |
PETROLOGY | 17 |
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Agglomeratic Slate alluvium analyses Assam beds Bengal Biafo Biafo glacier Bihar Bihar and Orissa Bombay Braldoh Burma Calcutta Cambrian cent Central Provinces clay coal cwts Deccan trap decrease deposits district Dogra slates dolerite earthquake east exported feet felspar flows fossils garnet Geol Geological Survey Ghosh glacier gneiss Gondwana granite Hills Himalaya increase intrusions iron-ore isoseismal Jour Kashmir laterite limestone Lower M. S. Krishnan Madras manganese-ore Messrs mica miles minerals mines Monghyr Mysore Nagpur Nepal north-west occur olivine Orissa outcrop output P. L. Renewal Panjal trap pegmatites petroleum phyllites Plate production Punjab Purnea Quantity quartzites Rajputana river rocks Salkhala Salt Range sand sandstones shales Shan sheet Singhbhum Siwalik slump belt snout soils specimens strata Surv Survey of India syncline TABLE Tertiary thickness Tin and allied tons valued Upper Trias valley zone