The work?was carried out?at the Department of Geology, University of Calcutta. The analytical work?was partly funded?by the UGC-UPE-II given to the University of Calcutta under the Non-focus Area Programme. The Research Fellowship in Sciences for meritorious students (RFSMS) of the University Grants Commission, Government of India, awarded to Susmita Das (No. F.7-47/2007 BSR), along with the Research and Fieldwork grants of the University of Calcutta given to Bapi Goswami, are all gratefully acknowledged. We thank Dr. S. Nandy and Sir S.K. Tripathy (EPMA Laboratory, CHQ, GSI,?Kolkata) for providing electron microprobe facilities. We are indebted to Prof J. Mukhopadhyay,
Bapi GOSWAMI, Susmita DAS, Ankita BASAK, Chitta BHATTACHARYYA.2023. Discovery of Early Tonian Calc-alkaline and Shoshonitic Metamafic Rocks from the North Purulia Shear Zone, Chhotanagpur Gneissic Complex, Eastern India: Implications of Proterozoic Sub-continental Lithospheric Mantle[J]. Acta Geologica Sinica(),97(1):68-89
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