Records of the Geological Survey of India, Volume 109The Survey, 1982 - Earthquakes |
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Page 23
... core - diameter , preferably by Nx or 66 mm bits or above when the core - size is large , there may be possibility of retention of good amount of core from soft , pulverized , or brittle formations , but it becomes pro- hibitive when ...
... core - diameter , preferably by Nx or 66 mm bits or above when the core - size is large , there may be possibility of retention of good amount of core from soft , pulverized , or brittle formations , but it becomes pro- hibitive when ...
Page 29
... Core - Sampling Prior to commencement of the sampling , the drill - cores of the interesting zone , need be preserved very carefully in the core boxes by wrapping in polythene papers immediately after they are brought out from the hole ...
... Core - Sampling Prior to commencement of the sampling , the drill - cores of the interesting zone , need be preserved very carefully in the core boxes by wrapping in polythene papers immediately after they are brought out from the hole ...
Page 30
the interesting zone to be taken up for sampling is splitted by a ' core - splitter ' into two equal halves , one half being utilized for sampling , whereas the counterpart is preserved for future references . When core recovery is less ...
the interesting zone to be taken up for sampling is splitted by a ' core - splitter ' into two equal halves , one half being utilized for sampling , whereas the counterpart is preserved for future references . When core recovery is less ...
Contents
GEOCHRONOLOGY AND ISOTOPE GEOLOGY DIVISION | 6 |
FIELD TECHNIQUE RESEARCH UNIT | 13 |
PUBLICATION DIVISION | 20 |
Copyright | |
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alignment amphibolite Andhra Pradesh axis bands basalt bauxite Bihar biotite block boreholes calcareous carbonatite carried charnockite CIRCLE clay coal comprising core covering an area Deccan Trap deposit depth Director DISTRICT Division dolomite dykes exposed fault folds foliation Formation geochemical geological mapping Geological Survey Geologist Jr geophysical geotechnical investigation gneiss Gondwana grade grained granite gneiss grey Headquarters hills indicated intrusives Jaipur kimberlites laboratory laterite limestone line km located logged Madhya Pradesh magnetite mapped an area metamorphism mineralisation minerals Murthy nala NW-SE occur pegmatite phyllite pits power house Project pyrite quartz quartz veins quartzite Quaternary RAJASTHAN Region river rock types S/Shri samples sand sandstone Sarvashri scale schist schistosity seams sediments shale shear zone Shri Singh Sinha spillway sq km Srivastava strike length stromatolites structure sulphide Super Group Survey of India Tamil Nadu thickness tion Toposheet traverse tremolite trending tunnel upto varies Vindhyan