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 ...
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Common terms and phrases
Ajanta Caves amphibole amphibole bearing quartzites amygdaloidal assemblage Balasore Balasore coast basalts beds biotite calc-silicate rocks calcite cent chambers chondrules Coarse colour convolute laminations Cretaceous crystals Deccan Traps 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 Gir forest grade grains granites heavy mineral hematite hills hornblende ilmenite intergrowth kilometres kyanite length Lenticulina limestone magnetite manganese manganese content manganiferous khondalite Marginulina massive trap meta-sediments metamorphism meteorite metres metres long metres wide nala Nishkhal north-west occur old dunes olivine opaques Orissa outcrop phenocrysts plagioclase porphyritic porphyritic trap pyroxenes quartz quartzites Rajasthan Reuss ridge rutile samples sand dunes Sastry schistosity sediments shales siliceous sillimanite Soft vesicular species Subarnarekha river Surv sutures thickness thin trend Trichinopoly Utatur stage veins vesicles vesicular trap width zircon