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 35
... sericite phyllite and schist have been found in the Middle and North Andaman island . Fragments of such rocks are common in the Jhinga Nala Formation . One phenomena which characterises almost all the members of this group of rocks is ...
... sericite phyllite and schist have been found in the Middle and North Andaman island . Fragments of such rocks are common in the Jhinga Nala Formation . One phenomena which characterises almost all the members of this group of rocks is ...
Page 37
... sericite , chlorite and calcite . The rock fragments include sericite - schist , chert , jasper , quartzite , shale , and volcanic rocks . In some sections , dark brown iron oxide veins are seen along the grain boundaries . Limonitised ...
... sericite , chlorite and calcite . The rock fragments include sericite - schist , chert , jasper , quartzite , shale , and volcanic rocks . In some sections , dark brown iron oxide veins are seen along the grain boundaries . Limonitised ...
Page 173
... Sericite / Kaolin Amphibole - Andesine > Microcline + III Garnetiferous Biotite Granite Quartz + Garnet ( Andraditic ) > Greisen ; end of pneumatolytic stage Incomplete boron metasomatism . K - metasomatism of charnockite . Biotite > ...
... Sericite / Kaolin Amphibole - Andesine > Microcline + III Garnetiferous Biotite Granite Quartz + Garnet ( Andraditic ) > Greisen ; end of pneumatolytic stage Incomplete boron metasomatism . K - metasomatism of charnockite . Biotite > ...
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