Enigma of Dangoaposi and Jagannathpur Lavas of Singhbhum Craton, Eastern India: Possible Solution
Authors
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Department of Geology, University of Calcutta, 35, B.C. Road, Kolkata - 700 019
Jyotisankar Ray -
Department of Geology, University of Calcutta, 35, B.C. Road, Kolkata - 700 019
Satyananda Maiti
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CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad - 500 007
C. Manikyamba
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Department of Geology, University of Calcutta, 35, B.C. Road, Kolkata - 700 019
Madhuparna Paul
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Department of Geology, University of Calcutta, 35, B.C. Road, Kolkata - 700 019
Payel Dey
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Department of Geology, University of Calcutta, 35, B.C. Road, Kolkata - 700 019
Satabdi Misra
DOI:
https://doi.org/10.1007/s12594-020-1564-3Keywords:
No keywordsAbstract
In the Precambrian Singhbhum stratigraphy, some enigmatic aspects exist as regards to Dangoaposi and Jagannathpur lavas. The existing enigma embodies locational aspects of these lavas, structural characteristics, stratigraphic position, and geochemical affinities. Based on recent field studies by the authors and knowledge acquired from existing literature, a possible solution has been proposed in the present study, which may be followed by Precambrian geologists in order to avoid all existing confusion and dilemma. The present study clearly indicates that in Jagannathpur, there is the presence of dyke rocks only (and there is no lava) and as such stratigraphic position of Jagannathpur lava in Singhbhum Geology should be discontinued. Dangoaposi lava (described as Jagannathpur lava by some previous workers) explicitly represents a portion of western Iron Ore Group (IOG) lava and therefore, may be considered to represent a sub-domain within western IOG.
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