Records of the Geological Survey of India, Volume 121, Parts 2-8The Survey, 1993 - 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 19
... rock samples are given in Table I. The rocks are low in SiO , content and high in total alkali ( Na , O + KO ) , Al , O , and MgO contents . Iron concen- tration is moderate in these rocks . CIPW norms suggest that the rocks ( both ...
... rock samples are given in Table I. The rocks are low in SiO , content and high in total alkali ( Na , O + KO ) , Al , O , and MgO contents . Iron concen- tration is moderate in these rocks . CIPW norms suggest that the rocks ( both ...
Page 36
... rocks occur to the south of the vast expanse of Chhotanagpur Granite Gneiss ( Archaen to Lower Proterozoic ) following statigraphic legenda for 1 : 1 million scale geological map of GSI , ER . with inliers of unclassified metamorphics ...
... rocks occur to the south of the vast expanse of Chhotanagpur Granite Gneiss ( Archaen to Lower Proterozoic ) following statigraphic legenda for 1 : 1 million scale geological map of GSI , ER . with inliers of unclassified metamorphics ...
Page 37
... rocks . Mode of occurrence of apatite mineralisation The apatite bearing rocks are cherty quartzite with chalcedony , iron hydroxide and magnetite in varying proportions . It is off white to reddish brown in colour and highly brecciated ...
... rocks . Mode of occurrence of apatite mineralisation The apatite bearing rocks are cherty quartzite with chalcedony , iron hydroxide and magnetite in varying proportions . It is off white to reddish brown in colour and highly brecciated ...
Contents
Structural Geometry of Ras Marble and its relationship with | 1 |
Geology of Deccan traps around TylsishyamKhambha | 9 |
Structural framework of folded Deccan basalts in Satpura 2 | 11 |
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Common terms and phrases
alkaline alluvial anomaly apatite Assam Baikunthapur basalt Beldih Bihar biotite block borehole burrows carbonaceous carbonatites Chalsa clay coal coastal colour Copper Belt correlation deposits district dykes flows fluvial folds Foothill Fault Zone fossils Ganga Geol Geological Survey geology and geomorphology geomorphology geophysical GHOSH gm British Museum gm Dr gm Prof gneisses grained granite Himalayas Holocene hornfels India INDIA Records Volume intrusion Jaldhaka Jharia Kutni Laterite lineament magma magnetic metamorphism meteorites migmatites mineral mineralisation mining olivine Orissa phyllites plagioclase Pleistocene quartz quartzite Quaternary geology Quaternary landforms Rajasthan Ras Marble Recent Flood Plain region Report rhyolite ridge river basin rocks sand sandstone scarp schist seams sediments shale Shear Zone Singhbhum slide slope Smithsonian Institution soil structure Surface Surface/formation Surv Survey of India synform tectonic Terrace thickness tion Tista Torsa trend Unconformity unpublished Uttar Pradesh vitrinite West Bengal