 | Chaudhuri, Srinanda, Ray, Jyotisankar, Koeberl, Christian, Thƶni, Martin, Dutta, Riya, Saha, Abhishek, Banerjee, Mousumi (2014) Petrology and geochemistry of the ultramafic-mafic Mawpyut complex, Meghalaya: a Sylhet trap differentiation centre in northeastern India. Geological Journal, 49 (2) 111-128 doi:10.1002/gj.2495 | Journal (article/letter/editorial) | | ultramaficāmafic Mawpyut complex, Meghalaya: a Sylhet trap differentiation centre in northeastern India SRINANDA CHAUDHURI1...Geology, University of Calcutta, Kolkata, 700 019, India Department of Lithospheric Research, University...differentiated complex which is related to the Sylhet trap located at Jaintia Hills district, Meghalaya, northeastern...northeastern India. The Mawpyut complex occurs as an arcuate body that intrudes into the surrounding Shillong...Shillong Group rocks. The complex in general contains āultramaļ¬cā and āmaļ¬cā rocks, as well as minor syenitic |  | Melluso, L., Srivastava, R. K., Guarino, V., Zanetti, A., Sinha, A. K. (2010) MINERAL COMPOSITIONS AND PETROGENETIC EVOLUTION OF THE ULTRAMAFIC-ALKALINE - CARBONATITIC COMPLEX OF SUNG VALLEY, NORTHEASTERN INDIA. The Canadian Mineralogist, 48 (1) 205-229 doi:10.3749/canmin.48.1.205 | Journal (article/letter/editorial) | | ULTRAMAFIC-ALKALINE ā CARBONATITIC COMPLEX OF SUNG VALLEY, NORTHEASTERN INDIA Leone MELLUSOĀ§ Dipartimento di...Geology, Banaras Hindu University, Varanasi 221 005, India Vincenza GUARINO Dipartimento di Scienze della...University, Varanasi 221 005, India Abstract The Sung Valley alkaline complex is a relatively small intrusion...Cretaceous age emplaced slightly before or during the IndiaāAntarctica break-up. It consists of ultramafic rocks...syenites). The parageneses indicate that this complex was formed by batches of primitive magmas with |  | | Journal (article/letter/editorial) | | Ultramafic-Mafic Complex from Jasra, Karbi Anglong, Shillong Plateau, Northeastern India Rajesh K. Srivastava*and...An early Cretaceous alkaline ultramafic-mafic complex is emplaced within the Proterozoic rocks of Shillong...Shillong plateau at Jasra, Karbi Anglong district of Assam. It is associated to the fracture system of...ultramafic-mafic rocks. Key words: Alkaline ultramafic-mafic complex, geochemistry, Jasra, Shillong plateau, Kerguelen...in the northeastern India (Kumar et al., 1996). Four such complexes (Sung Valley, Jasra, Samchampi, and |  | Melluso, L., Srivastava, R. K., Petrone, C. M., Guarino, V., Sinha, A. K. (2012) Mineralogy and magmatic affinity of the Jasra intrusive complex, Shillong Plateau, India. Mineralogical Magazine, 76 (5) 1099-1117 doi:10.1180/minmag.2012.076.5.03 | Journal (article/letter/editorial) | | magmatic affinity of the Jasra intrusive complex, Shillong Plateau, India L. MELLUSO1,*, R. K. SRIVASTAVA2,...of Geology, Banaras Hindu University, Varanasi, India Department of Earth Sciences, Cambridge University...rocks of the Jasra intrusive complex (Shillong Plateau, northeastern India) include phlogopite clinopyroxenites...rocks differs from the nearby Sung Valley ijolitic-carbonatitic complex and from the ultrapotassic lamproitic...lamproitic rocks of the Damodar Valley, which are of approximately the same age. This suggests major variability |  | | Journal (article/letter/editorial) | | Cretaceous Sung Valley ultramafic-alkaline-carbonatite complex, Shillong Plateau, Northeastern India: petrological...of Geology, Banaras Hindu University, Varanasi, India Received October 17, 2002; revised version accepted...Gwalani Summary The Shillong Plateau of northeastern India hosts four Early Cretaceous (105ā107 Ma) ultram...characteristics of one of these UACC, the Sung Valley, are presented. The Sung Valley UACC was emplaced in to the Proterozoic...and ijolitic rocks form the major part of the complex, the others constitute less than 5% of the total |
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