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 219
... colour . The impure varieties are being used for lime - burning . The light pink or flesh coloured felspar porphyries exposed around Bedia ( 20 ° 59 ' 71 ° 07 ' ) and to the S.S.W. of Khambha would also form beautiful building stones ...
... colour . The impure varieties are being used for lime - burning . The light pink or flesh coloured felspar porphyries exposed around Bedia ( 20 ° 59 ' 71 ° 07 ' ) and to the S.S.W. of Khambha would also form beautiful building stones ...
Page 226
... colour . In most grains pleochroism is not marked . In convergent polarised light between the crossed nicols the grains often show a negative pseudo - uniaxial optical figure . Muscovite is present as colour- less sub - rounded or ...
... colour . In most grains pleochroism is not marked . In convergent polarised light between the crossed nicols the grains often show a negative pseudo - uniaxial optical figure . Muscovite is present as colour- less sub - rounded or ...
Page 227
... colour . The grains are marked by straight extinction and bright polari- sation colours . Accessory Minerals . The ... colour and marked by strong absorption . Sphene occurs as irregular of sub - rounded grains , marked by high relief ...
... colour . The grains are marked by straight extinction and bright polari- sation colours . Accessory Minerals . The ... colour and marked by strong absorption . Sphene occurs as irregular of sub - rounded grains , marked by high relief ...
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