Records of the Geological Survey of India, Volume 120, Parts 2-8government of India., 1985 - 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 89
... million tonnes or more ) , may require 2 to 3 years of an investigation period , conventionally accepted as the gestation period for a large - sized iron - ore open - cast mine defined as a 4-5 million tonnes or more of production ...
... million tonnes or more ) , may require 2 to 3 years of an investigation period , conventionally accepted as the gestation period for a large - sized iron - ore open - cast mine defined as a 4-5 million tonnes or more of production ...
Page 94
... million tonnes , wherein exploratory mining shall raise the reserve rank to proved category . 5. Exploration mining excavations 200 to 300m3 in deep pits and / or adits per million tonne of proved ore reserve , in addition to drilling ...
... million tonnes , wherein exploratory mining shall raise the reserve rank to proved category . 5. Exploration mining excavations 200 to 300m3 in deep pits and / or adits per million tonne of proved ore reserve , in addition to drilling ...
Page 101
... million tonnes of ore have been won and 25 tonnes of gold have been recovered in its metal- lic splendour . Active mining is in progress through three major shafts , in 8 major reefs down to over 700 m levels of depth . In isolated ...
... million tonnes of ore have been won and 25 tonnes of gold have been recovered in its metal- lic splendour . Active mining is in progress through three major shafts , in 8 major reefs down to over 700 m levels of depth . In isolated ...
Contents
Contents | 1 |
Stratigraphy and structure of Delhi Supergroup of rocks | 12 |
Structures in Singhbhum shear zone at and around | 27 |
Copyright | |
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anhydrite antiform Aravalli range average axial planes bands Barotiya and Sendra Barotiya Group basalts basin Bhim Group block boreholes Chaibasa channel chert Chitradurga chlorite clay crescentic lamina deformation Delhi Delhi Supergroup deposit developed Devgarh Devgarh Group dextral Dhanjori drilling east eastern evaporites exploration F₂ folds folds F formation Geol Geological map geophysical gneiss gold grade granite gravity ground water halite Haryana hinge Hutti Ingaldhalu iron isoclinal Jodhpur laterite limb lineation lode metabasalts metamorphism migmatization mineral mineralisation minor folds Nagaur occur phase of folding planar plunge polyhalite pre-Delhi inlier pre-Delhi west Precambrian Punjab quartz quartzite Rajasthan Rajgarh Rajgarh Group Ras Marble red beds regional rocks Rohtak district samples schist schist belt schistosity sediments Sendra Group sequence shear zone Singhbhum strand plain stratigraphic Strike Reef structures sulphide Supergroup Surv Survey of India synform tectonic thickness tion trend Tuff values variogram Vasudev volcanics western