E–W strike slip shearing of Kinwat granitoid at South East Deccan Volcanic Province, Kinwat, Maharashtra, India

Kaplay, R. D.; Kumar, T. Vijay; Mukherjee, Soumyajit; Wesanekar, P R; Babar,; Chavan, Sumeet

doi:10.1007/s12040-017-0853-8

Cited by 10 publications

(1 citation statement)

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“…The other signature of neotectonics is landslides, which have an additional constraint of erosion around the Mahabaleshwar area(Joshi et al 2018). A neotectonic role of slides in the Kalsubai region cannot be ruled out(Gawali et al 2017) Kaplay et al (2017b). report dykes from the Kinwat region in the eastern part of the Deccan Traps.…”

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Tectonics of the Deccan Trap: Focus on Indian geoscientists’ contribution in last four years

Mukherjee¹,

Dole²,

Yatheesh³

et al. 2020

PINSA

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In the Deccan Trap, the west coast around Mumbai is presently designated as a "sheared margin" with nearly N-S trending strike-slip brittle shears. The eastern part of the Deccan trap shows prolific conjugate strike-slip faults. Tertiary and Quaternary reactivations of the sub-Trappean discontinuities had a geomorphologic implication since they modified the Deccan drainage systems.The marine geophysical investigations carried out in the western offshore regions have yielded a detailed understanding of the role of Deccan volcanism on the India-Seychelles-Madagascar breakup and the subsequent formation and evolution of the Western Indian Ocean. The revised plate tectonics takes care of the microcontinental slivers and the extinct spreading centers. The fossil Gop-Narmada-Laxmi Triple Junction was initiated by the earliest manifestation of the Deccan volcanism ~ 68.5 Ma. The Western Indian Ocean depicts a sharp drop in the spreading rate at around chron C28no (~ 63.63 Ma), soon after the main pulse of the Deccan volcanism. Based on the correlation of estimated 40 Ar/ 39 Ar ages for the onshore Ghatkopar-Powai tholeiites and the inferred age of the Raman-Panikkar-Wadia seamount chain in the Laxmi Basin, both these features are interpreted to represent the volcanic emplacement coeval to the Deccan volcanism at ~ 62.5 Ma.

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