Records of the Geological Survey of India, Volume 122, Parts 2-4Geological Survey of India, 1989 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 122
... seams encountered in various boreholes are broadly categorised into four groups ( composite seam - zone ) numbering I to IV from bottom upwards . Seam zones , in general , are well defined and widely separated in the northern and ...
... seams encountered in various boreholes are broadly categorised into four groups ( composite seam - zone ) numbering I to IV from bottom upwards . Seam zones , in general , are well defined and widely separated in the northern and ...
Page 127
... SEAMS IN RANIGANJ FORMATION INTERSECTED IN. In order to decipher the geology and structure , disposition of the coal - bearing formations along with quality of coal and assess the reserves , exploration by drilling was carried out in ...
... SEAMS IN RANIGANJ FORMATION INTERSECTED IN. In order to decipher the geology and structure , disposition of the coal - bearing formations along with quality of coal and assess the reserves , exploration by drilling was carried out in ...
Page 129
... seams in this tract and to assess the nature and degree of alterations of coal seams by igneous intrusives . GEOLOGICAL PLAN OF CHALBALPUR - MAHISMURA SECTOR , RANIGANJ COALFIELD , DISTRICT BARDHAMAN , W.8 . KM IS 1 SCALE SALANPUR 1 I'S ...
... seams in this tract and to assess the nature and degree of alterations of coal seams by igneous intrusives . GEOLOGICAL PLAN OF CHALBALPUR - MAHISMURA SECTOR , RANIGANJ COALFIELD , DISTRICT BARDHAMAN , W.8 . KM IS 1 SCALE SALANPUR 1 I'S ...
Contents
CENTRAL HEADQUARTERS 179 | 1 |
AIRBORNE MINERAL SURVEY AND EXPLORATION WING 80104 | 80 |
COAL WING 105 174 | 105 |
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amphibolite analysed anomaly anorthosite assemblage bands Barakar Barakar Formation basin bed rock belt Bhuban Bihar BIHAR Code biotite block boreholes Calcutta carbonatite carried clay coal seams Coal Wing COALFIELD Construction stage geotechnical cores covered dam axis deposits depth Disang district drilling dykes Eastern Engineering Geology evaluation fault Feasibility stage field season folds geochemical geological mapping Geology Division-II Ops geophysical geotechnical investigation gneiss Gondwana grade grained granite granite gneiss grey Group grouting horizon indicate irrigation limestone lineaments located magnetic metamorphic mica migmatites mineral mineralisation nala occur Orissa pegmatite phyllite PPB PPB PRADESH quartz quartzite Quaternary Raniganj Reservoir Scheme river rock types samples sand sandstone scale schist sediments shale shear zone Shillong siltstone Singhbhum slope Special Investigation spillway sq km stage geotechnical investigation structure surface Survey of India Talchir thickness toposheet traverses trending Upper upto valley varies veins volcanics West Bengal