Výsledky vyhledávání - "Subhadip Bhadra"

Origin and tectonic implications of a new Belur–Sarkar Nattar Mangalam–Udayapatti shear zone (BNUSZ), Salem Granulite Block, India: Insights from deformation and magnetic fabrics

Autor: Subhadip Bhadra, C Ananth

Publikováno v: Journal of Earth System Science. 130

Deformation and magnetic fabrics across the Salem and Namakkal Granulite Blocks (southern India) have been integrated to understand the poly-phase (D1–D3 ductile and D4 brittle) tectonic reworking in the study area. D1 gneissic fabric (S1) is the d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::45ee72f64917351f5d0b957c0f87307f
https://doi.org/10.1007/s12040-021-01717-9

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Contrasting kinematics of brittle-shears within the Salem–Attur and Bhavani shear zone, south India: Tectonic implications

Autor: Abhishikta Goswami, C Ananth, Subhadip Bhadra

Publikováno v: Journal of Earth System Science. 129

We document kinematics and rheological behaviour of brittle shears (~50 cm wide) postdating solid-state tectonic fabric in the Salem–Attur (SASZ) and Bhavani (BSZ) shear zone that constitute a Paleoproterozoic (~2500 Ma) suture juxtaposing disparat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::01a5e10208b96de34e52e733c42af69c
https://doi.org/10.1007/s12040-019-1331-2

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Tectonothermal evolution of a garnet-bearing quartzofeldspathic gneiss from the Moyar shear zone, south India and its bearing on the Neoarchean accretionary tectonics

Autor: Pritam Nasipuri, Subhadip Bhadra

Publikováno v: Lithos. :1-18

We present mesoscale structural development across the Nilgiri Block and the flanking Moyar and Bhavani shear zones in south India, and detailed mineral–chemical and geothermobarometric studies of a garnet-bearing quartzofeldspathic gneiss from the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37ae230dc418ff8b8905c967c56d574b
https://doi.org/10.1016/j.lithos.2016.12.031

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Decoding evolutionary history of provenance from beach placer monazites: A case study from Kanyakumari coast, southwest India

Autor: Subhadip Bhadra, S. Balakrishnan, C. Perumalsamy

Publikováno v: Chemical Geology. 427:83-97

Mineral chemical and geochronological studies of beach placer monazites from Kanyakumari coast, SW India were carried out to understand growth history of monazite and its bearing on tectono-thermal evolution of the source rock. In chemically zoned mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::588ea5e49603b25d277ef4082e39ab9f
https://doi.org/10.1016/j.chemgeo.2016.02.018

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Structural framework for the emplacement of the Bolangir anorthosite massif in the Eastern Ghats Granulite Belt, India: implications for post-Rodinia pre-Gondwana tectonics

Autor: Subhadip Bhadra, Pritam Nasipuri

Publikováno v: Mineralogy and Petrology. 107:861-880

Massif type anorthosites at Bolangir, eastern India are emplaced at the vicinity of the proto-Indian craton—Eastern Ghats Granulite belt contact. Micro- and meso-structural evidences indicate that the emplacement of the anorthosite pluton and the a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79c2b7aee2cec86534f59f9d31ed7b77
https://doi.org/10.1007/s00710-013-0281-7

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The barometer tremolite + tschermakite + 2 albite = 2 pargasite + 8 quartz: Constraints from experimental data at unit silica activity, with application to garnet-free natural assemblages

Autor: Subhadip Bhadra, Abhijit Bhattacharya

Publikováno v: American Mineralogist. 92:491-502

Garnet is notably absent in mafic to felsic lithologies, in low- P metamorphic terranes, and in Mg-rich bulk compositions in high- P regionally metamorphosed terranes. In the absence of garnet, existing mineral barometers cannot be applied for estima

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43afb5e0f13260c9bab9185f74c335e5
https://doi.org/10.2138/am.2007.2067

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Shear Zone-hosted Migmatites (Eastern India): the Role of Dynamic Melting in the Generation of REE-depleted Felsic Melts, and Implications for Disequilibrium Melting

Autor: Suman Das, Abhijit Bhattacharya, Subhadip Bhadra

Publikováno v: Journal of Petrology. 48:435-457

In the Ranmal migmatite complex, non-anatectic foliated granite protoliths can be traced to polyphase migmatites. Structural^microtextural relations and thermobarometry indicate that syn-deformational segregation^crystallization of in situ stromatic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55c4462094445828149391a9a8fbd79f
https://doi.org/10.1093/petrology/egl066

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Aluminous sapphirine granulites from the Eastern Ghats Belt (India): Phase relations and relevance to counterclockwise P-T history

Autor: Manua Banerjee, Subhadip Bhadra, Suman Das, Abhijit Bhattacharya, Michael M. Raith

Publikováno v: European Journal of Mineralogy. 18:35-48

In the Eastern Ghats Belt, 7-9-3 sapphirine in biotite-free Crd + Crn ± Sil ± Spl restitic domains occurs interlayered with Opx + Crd + K-feldspar assemblages extensively replaced by biotite. Natural settings and experimental phase relations indica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57f9ecd1f4249cad286c9b6f3a1518d2
https://doi.org/10.1127/0935-1221/2006/0018-0035

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