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 274
... phenocrysts of felspars are lath - shaped and usually have serrated outlines whereas the phenocryst of pyroxene are somewhat acicular and have sharp outlines . The phenocrysts of felspars are generally about 7 mm . in length but ranging ...
... phenocrysts of felspars are lath - shaped and usually have serrated outlines whereas the phenocryst of pyroxene are somewhat acicular and have sharp outlines . The phenocrysts of felspars are generally about 7 mm . in length but ranging ...
Page 275
... phenocrysts and as microlites in the groundmass . The phenocrysts are 2 to 12 mm . in length , while the plagio- clase of the groundmass measures from a fraction of a milimeters to 2 mm . in length . The phenocrysts extinguish between ...
... phenocrysts and as microlites in the groundmass . The phenocrysts are 2 to 12 mm . in length , while the plagio- clase of the groundmass measures from a fraction of a milimeters to 2 mm . in length . The phenocrysts extinguish between ...
Page 304
... phenocrysts and anhedral crystals in the groundmass . Apatite is mostly in the form of slender prismatic crystals and sometimes as hexagonal cross sections in the groundmass . Muscovite and sericite occur in minor amounts . The ...
... phenocrysts and anhedral crystals in the groundmass . Apatite is mostly in the form of slender prismatic crystals and sometimes as hexagonal cross sections in the groundmass . Muscovite and sericite occur in minor amounts . The ...
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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