Records of the Geological Survey of India, Volume 98The Survey, 1970 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
From inside the book
Results 1-3 of 17
Page 26
... hematite ( dehydrated limonite ) along schistosity , elimination of feldspar and incorporation of fine grains of quartz within the hematite matrix . Relict schistosity is defined by the partially altered muscovite , the flakes often ...
... hematite ( dehydrated limonite ) along schistosity , elimination of feldspar and incorporation of fine grains of quartz within the hematite matrix . Relict schistosity is defined by the partially altered muscovite , the flakes often ...
Page 99
... hematite . Some of them exhibit undulose extinction . Glauconite occurs in three distinct forms , namely , ( i ) as ... hematite which imparts a reddish tinge to it . Glauconite grains vary in size from 0,2 mm . to 0.4 mm . and this ...
... hematite . Some of them exhibit undulose extinction . Glauconite occurs in three distinct forms , namely , ( i ) as ... hematite which imparts a reddish tinge to it . Glauconite grains vary in size from 0,2 mm . to 0.4 mm . and this ...
Page 105
... hematite is present in the Lower Red sandstone but absent in the Upper Kaimur quartzite . The presence of sun cracks , ripple marks and mud cracks in the bottom beds suggests that these were laid down in an environment which had been ...
... hematite is present in the Lower Red sandstone but absent in the Upper Kaimur quartzite . The presence of sun cracks , ripple marks and mud cracks in the bottom beds suggests that these were laid down in an environment which had been ...
Contents
VOLUME 98 PART | 1 |
their Origin | 16 |
The Brecciated Quartz Veins of Nurungo Hazaribagh | 40 |
Copyright | |
13 other sections not shown
Other editions - View all
Common terms and phrases
alluvial deposits Alluvium alumina Aravalli Archaean Ariyalur Ariyalur group Banded Gneissic Complex Barakar Barren measures basalt basins bauxite bauxitic clay beds boreholes Boulder boundary faults chemical clay zone clayey claystone coal seams conglomerate Cretaceous cross-stratification Deccan trap district fauna felspar flowing formation forms fossiliferous fossils Geol Geological Survey glacial glauconite gneisses Gondwana grains granite granitised groundwater hematite indicate interglacial intra-basinal faults Jahazpur Kaimur kaolinite laterite lateritic gravel lateritisation leaching lignite limestone limonite lithological lithomargic clay Lower Karewas metres minerals namadicus Narmada occurs overlying parent rock pebbles Pinjor pisolites Pleistocene Pradesh present quartz quartzites Raniganj ripples Sakolis sand sandstone sandy clay sandy soil Santonian schists sedimentary sediments Semri shale silica Siwalik stage structures Surv Survey of India Talchir Tatrot tectonic terrain Tertiary sequence thickness thin trap Trichinopoly tubewells unconformity Upper valley weathering West Bokaro coalfield white clay