cover image: Memoirs of the Geological Survey of India.The Mineral Deposits of Eastern Singhbhum and Surrounding Areas

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Memoirs of the Geological Survey of India.The Mineral Deposits of Eastern Singhbhum and Surrounding Areas

1937

. CHAPTER XV. —IRON-ORE—ORIGIN OF THE HEMATITE-BEARING ROCKS 197 Formation of iron-ore beds in general . 197 Formation of the hematite- bearing beds of south-east Chota Nagpur and Mayurbhanj . 200 Formation of the iron-ore beds in south Singhbhum and Keonjhar. [...] The survey of the eastern part of the Singhbhum copper belt was commenced in November 1927 ; subsequent to the completion of mapping along the copper belt the survey was extended to a much wider area until the 1934-35 field season, using the Survey of India maps published on the scale of one inch to one mile. [...] He was the first to point out, in his progress reports, the intrusive nature of the granites into the schists, he also suggested the relation of mineralisation to the Singhbhum granite and the localisation of the copper deposits to interlaminated zones of crush. [...] The simple expression ore-liquid fulfils all the requirements and makes no admission of the physical relation between the constituents therein ; the term does not exclude the presence of material in col- loidal suspension at any stage in the history of the liquid. [...] The replacement of one mineral by another, which provides a picture of the sequenceof changes and of the stability conditions during the history of the ore- liquids, is, like the mineral sequence itself, one of the fundamental facts upon which metallogenetic arguments are based.
agriculture environment
Pages
344
Published in
India
SARF Document ID
sarf.100011
Segment Pages Author Actions
Cover
i-ii J.A. Dunn view
Frontmatter
i-vii J.A. Dunn view
Memoirs of the Geological Survey of India
1-279 J.A. Dunn view
Index
i-xvii J.A. Dunn view
Records of the Geological Survey of India
11-26 J.A. Dunn view

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