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Browsing by Author "Sequeira, N."

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The ~1.4 Ga A-type granitoids in the "Chottanagpur crustal block" (India), and its relocation from Columbia to Rodinia?

Sequeira, N.; Bhattacharya, A.; Bell, E. (Geoscience Frontiers. 13(2); 2022; ArticleID_101138.)

In paleogeographic reconstructions of the Columbia and Rodinia Supercontinents, the position of the Greater India landmass is ambiguous. This, coupled with a limited understanding of the tectonic evolution of the mobile ...
The Central Indian Tectonic Zone: A Rodinia supercontinent-forming collisional zone and analogy with the Grenville and Sveconorwegian orogens

Bhattacharya, A.; Banerjee, A.; Sequeira, N. (Geosphere. 19(5); 2023; 1300-1317.)

In the paleogeographic reconstructions of the Rodinia supercontinent, the circum-global 1.1-0.9 Ga collisional belt is speculated to skirt the SE coast of India, incorporating the Rodinian-age Eastern Ghats Province. But ...
Dynamics of Early Neoproterozoic accretion, west-central India: I. Geochronology and Geochemistry

Banerjee, A.; Cogne, N.; Sequeira, N.; Bhattacharya, A. (Lithos. 422-423; 2022; ArticleID_106715.)

The Godhra-Chhota Udepur (GC) sector (west-central India) is the zone of convergence between two crustal-scale accretion zones, i.e. the N/NNE-striking Aravalli Delhi Fold Belt (ADFB) against the E-striking Central Indian ...
Dynamics of Early Neoproterozoic accretion, west-central India: II approx. 1.65 Ga HT-LP and approx. 0.95 Ga LT-HP metamorphism in Godhra-Chhota Udepur, and a tectonic model for Early Neoproterozoic accretion

Banerjee, A.; Prabhakar, N.; Sequeira, N.; Cogne, N.; Bhattacharya, A. (Lithos. 422-423; 2022; ArticleID_106740.)

The N/NNE-striking Aravalli Delhi Fold Belt (ADFB) and the E-striking Central Indian Tectonic Zone (CITZ) converge at the Godhra-Chhota Udepur (GC) sector, west-central India. Analyses of mesoscale deformation structures ...
Early Neoproterozoic accretion at the northern margin of the Chottanagpur Gneiss Complex, Eastern India

Sequeira, N.; Bhattacharya, A. (Tectonics. 40(10); 2021; ArticleID_e2020TC006613.)

The study based on structural mapping, monazite chemical age determinations and analyses of P-T pseudosections explores the hitherto undocumented accretion dynamics of the northern margin of the Chottanagpur Gneiss Complex ...
Early Neoproterozoic tectonics in the Godhra-Chhota Udepur sector: Evidence for two-stage accretion in the Great Indian Proterozoic Fold Belt

Banerjee, A.; Sequeira, N.; Cogne, N.; Prabhakar, N.; Bhattacharya, A. (Lithosphere. 2022(8); 2022; ArticleID_9322892.)

The Great Indian Proterozoic Fold Belt (GIPFOB) is a curviplanar highly-tectonized zone of Precambrian crystalline rocks. In the GIPFOB, the N/NNE-striking western arm (the Aravalli Delhi Fold Belt, ADFB) and the E-striking ...
Growth of coronal garnet in anhydrous high-Fe ultrabasic rocks: The interplay between metamorphic reaction progress, local strain heterogeneity and grain boundary diffusion

Bhattacharya, A.; Dey, J.; Kushwaha, A.; Sequeira, N. (Journal of Petrology. 62(10); 2021; ArticleID_egab067.)

Coronal garnets at pyroxene-plagioclase interfaces are traditionally used to estimate P-T conditions and reconstruct P-T paths. However, the mechanism by which the coronal garnet grows is poorly constrained. We address the ...
Tectonics of the Greater India Proterozoic Fold Belt, with emphasis on the nature of curvature of the belt in west-central India

Banerjee, A.; Sequeira, N.; Bhattacharya, A. (Earth-Science Reviews. 221; 2021; ArticleID_103758.)

The Greater India Proterozoic Fold Belt (GIPFOB) is a curved highly tectonized zone dominated by Early Paleoproterozoic to Early Neoproterozoic magmatic and metamorphic rocks extending from NW India (Aravalli Delhi Fold ...

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