Records of the Geological Survey of India, Volume 105, Part 2Geological Survey of India, 1973 - 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 37
... felspar ( 10 % , some grains show alteration to sericite and calcite ) , rock fragments ( compara- tively more than felspar ) and small amounts of epidote , calcite and a few shreds of mica . The matrix ( 30-40 % ) consists of ...
... felspar ( 10 % , some grains show alteration to sericite and calcite ) , rock fragments ( compara- tively more than felspar ) and small amounts of epidote , calcite and a few shreds of mica . The matrix ( 30-40 % ) consists of ...
Page 47
... felspar and rock fragments and some amount of quartz held in a calcareous and clayey matrix . Felspars are all ... felspar and contain less matrix and more cement which is either chlori- tic or calcareous . The above formations of ...
... felspar and rock fragments and some amount of quartz held in a calcareous and clayey matrix . Felspars are all ... felspar and contain less matrix and more cement which is either chlori- tic or calcareous . The above formations of ...
Page 123
... felspar , subordinate nepheline and analcite , magnetite and calcite . Colourless diopsidic augite occurs as euhedral phenocrysts of prismatic and tabular habit . The size of the tabular grains ranges from very minute grains up to 1.22 ...
... felspar , subordinate nepheline and analcite , magnetite and calcite . Colourless diopsidic augite occurs as euhedral phenocrysts of prismatic and tabular habit . The size of the tabular grains ranges from very minute grains up to 1.22 ...
Contents
RECORDS | 2 |
The Geology and Mineral Resources of the Andaman | 25 |
Geology of the Coal Measures in the Deccan Trap region | 69 |
Copyright | |
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80 mesh amphibolites analysed Andaman island anorthosites apatite bands Baraganda Baratang Baratang island basaltic basin beds Bihar biotite Bramlette and Riedel calc-granulite calcareous calcite carbonate Carboniferous charnockites chemical clay coal coalfield coalseams conglomerate copper Deflandre deposit Discoaster district endothermic endothermic peak Eocene estherids fauna felspar figs folds foliation Formation fossil gabbro Gangamopteris garnetiferous geochemical Geol Geological Survey glacier gneisses Gondwana grains granitic gray graywacke hill INDIA Records indicate khondalites Krol limestone lodes Lower margins metadolerite metal Middle Andaman mineral mineralisation Mussoorie Nala occur Orissa orthopyroxene oxides para-amphibolite Permian phosphate phosphorite pinnules plagioclase Plate present pyroxene quartz quartzite rocks samples sandstone schist sedimentary sediments shales shear shows siltstone snout South Andaman Stradner strike length Surv Survey of India thickness Thinnfeldia tion tonnes trace element ultrabasic upto valley varies veins younger ortho-amphibolite Zemu glacier zone