Records of the Geological Survey of India, Volume 98The Survey, 1970 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 51
... weathering is also well known . In natural condition it depends on ionic potential and concentration . Secondary changes and differential leaching create concentration - gradient in the laterite mantle , Percola- ting rain water causes ...
... weathering is also well known . In natural condition it depends on ionic potential and concentration . Secondary changes and differential leaching create concentration - gradient in the laterite mantle , Percola- ting rain water causes ...
Page 52
... weathering process . Certain sympathetic relationship has been observed between Ti and Al in the leaching of clays . No such relation- ship exists between Si and Ti ( Pl.4 ) . Had the lithomarge zone been due to resilicification of ...
... weathering process . Certain sympathetic relationship has been observed between Ti and Al in the leaching of clays . No such relation- ship exists between Si and Ti ( Pl.4 ) . Had the lithomarge zone been due to resilicification of ...
Page 53
... weathering characterised by gradual elimination of silica and enrichment of alumina progresses rapidly in tropical regions . Almost all rock - types are susceptible to this pattern of weathering . REFERENCE 1. Allen , V.T. , 1947. - ...
... weathering characterised by gradual elimination of silica and enrichment of alumina progresses rapidly in tropical regions . Almost all rock - types are susceptible to this pattern of weathering . REFERENCE 1. Allen , V.T. , 1947. - ...
Contents
VOLUME 98 PART | 1 |
their Origin | 16 |
The Brecciated Quartz Veins of Nurungo Hazaribagh | 40 |
Copyright | |
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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