Records of the Geological Survey of India, Volume 76, Issue 16Government of India, 1948 - Earthquakes Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 40
... important dolerite dykes occur , but it is the ultra- basic , mica - peridotite intrusions ( dykes and sills ) which are by far the most important . These have converted the good quality Barakar coals into jhama in many areas ...
... important dolerite dykes occur , but it is the ultra- basic , mica - peridotite intrusions ( dykes and sills ) which are by far the most important . These have converted the good quality Barakar coals into jhama in many areas ...
Page 58
... important pro- portion of the sediment laid down during upper Eocene times and , by its conversion into lignitic coal , the thick workable seams of the Naga and Patkoi hills were formed . ( b ) Coal measures of the Jaintia series ...
... important pro- portion of the sediment laid down during upper Eocene times and , by its conversion into lignitic coal , the thick workable seams of the Naga and Patkoi hills were formed . ( b ) Coal measures of the Jaintia series ...
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... important pro- portions of the original seams ) to remain a total loss or , alternative- ly , to recover a further percentage of the buried potential energy by a process of underground controlled gasification , the idea does not appear ...
... important pro- portions of the original seams ) to remain a total loss or , alternative- ly , to recover a further percentage of the buried potential energy by a process of underground controlled gasification , the idea does not appear ...
Contents
sources of information | 1 |
COAL IN INDIAcontd | 6 |
Map of the Jammu coalfields Kashmir | 7 |
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20 feet analyses anthracitic Argada Assam Ballalpur Baluchistan Barakar measures beds Bihar bituminous coal caking carbonaceous cent Coal in India coal industry coal measures Coalfields coking coals colliery consumption Daltonganj Damodar river Damodar valley Damuda Dandot deposits Dishergarh dolerite east eastern Eocene faults feet in individual feet in thickness feet of coal feet of strata feet thick fuel Geol Geological Giridih Gondwana coals India Indian Coal intrusions Jharia field Kamthi Karanpura Kashmir Khel latter lignite limestones lower Eocene M. S. Krishnan Makarwal Mesozoic metallurgical Mikir hills million tons mines non-caking north-western northern outcrops output peridotite Permian production proved Punjab railway Raniganj Raniganj coal measures Raniganj field Raniganj measures Salt Range sandstones Sandstones and shales seams occur seams of coal sediments sequence shales southern square miles stage Talchir Tertiary Text-fig thin coal seams thin seams Upper Assam volatile workable coal workable seams workable thickness