Records of the Geological Survey of India, Volume 94The Survey, 1959 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 207
... lower grade of metamorphism ( anthophyllite - cordierite sub - facies ) . The absence of sillimanite appears to be mainly due to deficiency of alu- mina in the original sediments , on the following evidences : - 1. The other aluminous ...
... lower grade of metamorphism ( anthophyllite - cordierite sub - facies ) . The absence of sillimanite appears to be mainly due to deficiency of alu- mina in the original sediments , on the following evidences : - 1. The other aluminous ...
Page 294
... lower most division of the Trichinopoly Cretaceous formations was assigned a Cenomanian age by Stoliczka on the basis of his palaeontological studies and Blanford's ( 1862 ) stratigraphical observations . L. Rama Rao ( 1923 ) while ...
... lower most division of the Trichinopoly Cretaceous formations was assigned a Cenomanian age by Stoliczka on the basis of his palaeontological studies and Blanford's ( 1862 ) stratigraphical observations . L. Rama Rao ( 1923 ) while ...
Page 295
... lower Utaturs . The present investigation suggests that the Utatur shales overlying the coral reef limestone near Kallakkudi were deposited under similar environ- mental conditions as those of Lower Utaturs and could be contemporaneous ...
... lower Utaturs . The present investigation suggests that the Utatur shales overlying the coral reef limestone near Kallakkudi were deposited under similar environ- mental conditions as those of Lower Utaturs and could be contemporaneous ...
Contents
GEOLOGICAL SURVEY OF INDIA | 190 |
STRUCTURE | 200 |
SUMMARY AND CONCLUSIONS | 209 |
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amphibole amphibole bearing quartzites amphibolites amygdaloidal aperture Balasore banded magnetite-hematite quartzites basalts beds biotite calcite cent chambers chondrules colour convolute laminations Cretaceous Deccan Traps deposits dipping district dolerites dune sands dykes east enstatite felspar ferruginous Figured specimen flows folds foraminifera formations G.S.I. Type garnet Genus Geol Geological Geologist gneisses grade grains granites grey quartzites heavy mineral hematite hornblende ilmenite intergrowth Kalahandi kilometres kyanite length Lenticulina limestone magnetite manganese content manganese-ore manganiferous khondalite Marginulina massive trap meta-intrusives meta-sediments metamorphism metres metres long metres wide Nishkhal occur old dunes olivine opaques outcrop pebbles phenocrysts plagioclase porphyritic porphyritic trap pyroxenes quartz quartzites Reuss ridge rutile samples sand dunes schistosity sediments shales siliceous sillimanite Soft vesicular species Subarnarekha Subarnarekha river Survey of India sutures thickness thin trend Utatur stage veins vesicles vesicular trap white gritty quartzites width Yerabali zircon