Near N–S paleo-extension in the western Deccan region, India: Does it link strike-slip tectonics with India–Seychelles rifting?

Misra, Achyuta Ayan; Bhattacharya, G.C.; Mukherjee, Soumyajit; Bose, Narayan

doi:10.1007/s00531-014-1021-x

Cited by 119 publications

(23 citation statements)

References 187 publications

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“…Abu granitic pluton (northwestern India) with Malani Igneous Suite and Praslin group granitoids of the Seychelles and northern Madagascar. Mishra et al (2014) schematically showed the position of the India-Seychelles bank and Madagascar in a 65-70 Ma plate reconstruction, primarily based on paleostress trends deduced from field and remote sensing analysis in the western Deccan Large Igneous Province. They reported a predominantly N-S zone of extensional deformation in the western Deccan region, which they matched with faults interpreted from seismic data to postulate strikeslip rifting between India and Seychelles.…”

Section: Perplexity On India-madagascar Correlation and New Interpretmentioning

confidence: 99%

India–Madagascar paleo-fit based on flexural isostasy of their rifted margins

et al. 2015

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Section: Perplexity On India-madagascar Correlation and New Interpretmentioning

confidence: 99%

India–Madagascar paleo-fit based on flexural isostasy of their rifted margins

et al. 2015

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“…3e), which rotated rapidly anticlockwise between 64 Ma and 59 Ma, and caused compression along the Amirante Trench (Cande et al, 2010;Eagles and Hoang, 2014). The common assumption of orthogonal rifting between the Seychelles microcontinent and northwest India has been challenged, with some authors (Misra et al, 2014) suggesting oblique rifting based upon outcrop work in theWestern Deccan Strike-slip Zone (Fig. 1a inset).…”

Section: Plate Tectonic Settingmentioning

confidence: 99%

Complex rift geometries resulting from inheritance of pre-existing structures: Insights and regional implications from the Barmer Basin rift

Bladon

Clarke

Burley

2015

Journal of Structural Geology

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a b s t r a c t Structural studies of the Barmer Basin in Rajasthan, northwest India, demonstrate the important effect that pre-existing faults can have on the geometries of evolving fault systems at both the outcrop and basin-scale. Outcrop exposures on opposing rift margins reveal two distinct, non-coaxial extensional events. On the eastern rift margin northwest-southeast extension was accommodated on southwest and west-striking faults that form a complex, zig-zag fault network. On the western rift margin northeast-southwest extension was accommodated on northwest-striking faults that form classical extensional geometries.Combining these outcrop studies with subsurface interpretations demonstrates that northwest-southeast extension preceded northeast-southwest extension. Structures active during the early, previously unrecognised extensional event were variably incorporated into the evolving fault systems during the second. In the study area, an inherited rift-oblique fault transferred extension from the rift margin to a mid-rift fault, rather than linking rift margin fault systems directly. The resultant rift margin accommodation structure has important implications for early sediment routing and depocentre evolution, as well as wider reaching implications for the evolution of the rift basin and West Indian Rift System. The discovery of early rifting in the Barmer Basin supports that extension along the West Indian Rift System was long-lived, multi-event, and likely resulted from far-field plate reorganisations.

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“…In this part of the Anaran anticline, the fold axis has been changed from original NW-SE trend to approximately N-S trend. b Example of axial tensile fractures in the carbonate series of Sarvak Fm (Price 1966;McClay 1987;Twiss and Moores 1992;Wibberley et al 2008;Mukherjee 2013aMukherjee , b, 2014Misra et al 2014Misra et al , 2015, and also, the existence of the N-S trending ABF has been documented well (Player et al 1966;Farzipour-Saein et al 2009a). Having the orientation of these four sets and also the shear sense of each set, we categorized them to R (N00° ± 5°), R′ (N60°), P (N150°) and Y (N165°) fracture sets (Fig.…”

Section: Discussionmentioning

confidence: 98%