Records of the Geological Survey of India, Volume 129, Parts 2-3The Survey, 1998 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 150
... sand content in these sediments varies between 61 and 98 per- cent . The sandy layers often contain shell zones , calcareous concretions and weathered rock frag- ments . Calcareous concretions often occur at the top of the silty sand ...
... sand content in these sediments varies between 61 and 98 per- cent . The sandy layers often contain shell zones , calcareous concretions and weathered rock frag- ments . Calcareous concretions often occur at the top of the silty sand ...
Page 161
... sand / clay . This layer is of lighter tone and occurs as discontinuous patches and tapers on either side . Sediment distribution in the area indicates finer to coarse sand in the central part flanked on the deeper side by clay ( down ...
... sand / clay . This layer is of lighter tone and occurs as discontinuous patches and tapers on either side . Sediment distribution in the area indicates finer to coarse sand in the central part flanked on the deeper side by clay ( down ...
Page 162
... sand / sandy clay and clay from shallow to deep sector , while the southern sector dominatly in- dicates silty sand and clay . Examination of sub - surface cores indicates that the fine sand and medium sand zones are under- lain by coarse ...
... sand / sandy clay and clay from shallow to deep sector , while the southern sector dominatly in- dicates silty sand and clay . Examination of sub - surface cores indicates that the fine sand and medium sand zones are under- lain by coarse ...
Contents
Stratigraphy Division | 11 |
Central Petrological Laboratories | 26 |
Geodata and Database Division | 43 |
Copyright | |
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acid volcanics aeromagnetic amphibolite anomaly bands Barakar Barakar Formation Barren Measure basemetal basic basin belt Bhutan Bihar biotite block boreholes charnockite Chhotanagpur clay coal seams Coalfield coarse Code core covered depth district Division drilling dykes east eastern faults field season foliation geochemical GEOLOGICAL MAP geophysical GEOTECHNICAL INVESTIGATION Ghosh gneiss gneissic gold Gondwana grade grained granite granite gneiss grey ground evaluation heavy minerals India indicated intersected intrusives Kamthi laterite limestone lineament located magnetic mica schist migmatite mineralisation nala NW-SE occur Orissa OVERVIEW pegmatite phyllite plagioclase Pradesh programme Project Proterozoic Purulia Purulia district quartz quartz veins quartzite Raniganj REGIONAL EXPLORATION river samples sand sandstone scale schist seam zones sector sediments sequence shale shear zone Sikkim Singhbhum southern sq km sq.km STAGE GEOTECHNICAL INVESTIGATION strike length structure sulphide surface survey Talchir terrain thickness tion Toposheet trending ultramafic upto varies West Bengal