The Indian Promontory: A Bridge between Plate Tectonics and Life Evolution Models

Vérard, Christian; Stampfli, Gérard M.; Borel, Gilles; Hochard, Cyril

doi:10.13189/ujg.2017.050202

Cited by 9 publications

(2 citation statements)

References 47 publications

(72 reference statements)

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“…There are differing interpretations on the cause for these uplift phases. It has been proposed that late middle Eocene uplift of the IBR was the result of coupling with India (Aitchison et al, 2007;Morley, 2009;Morley et al, 2020;Vérard et al, 2017) or an allochthonous terrane (Acharyya, 2007(Acharyya, , 2015. Other studies have argued that the uplift of the Inner Wedge was induced by the rapidly uplifting retro-wedge region of the IBR formed due to hyper-oblique subduction (Licht et al, 2019;Maurin & Rangin, 2009;Nielsen et al, 2004).…”

Section: Indo-burman Rangesmentioning

confidence: 99%

Burma Terrane Collision and Northward Indentation in the Eastern Himalayas Recorded in the Eocene‐Miocene Chindwin Basin (Myanmar)

et al. 2020

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The Burma Terrane (Myanmar) played an important role in the India-Asia collision and moved over 2,000 km northward on the Indian Plate during the Cenozoic, before colliding with the Asian margin. However, the timing of this collision and its correlation to regional uplift phases, sedimentary provenance, and basin development remain poorly constrained. We report sedimentological, paleomagnetic, and geochronological data from the late Eocene to early Miocene strata of the Chindwin Basin in the Burmese forearc, constraining the paleogeographic evolution of the Burma Terrane and the Eastern Himalayan orogen. Our results highlight two unconformities of late Eocene-middle Oligocene and latest Oligocene-early Miocene age, revealing a two-stage interaction of the Burma Terrane with the Asian margin during its northward translation. The first unconformity follows rapid~0.6 m/ky subsidence in the Burmese forearc, as shown by magnetostratigraphy. The transition to a fluvial depositional environment and the occurrence of reworked sediments at this first unconformity likely records the commencing collision of India and the northern extent of the Burma Terrane with the Asian margin. The second unconformity shows drastic changes in magnetic properties, mineralogy, and provenance, with high-grade metamorphic grains and early Miocene apatite U-Pb and fission-track ages indicating that it is coeval to a major deformation phase in Myanmar and the Eastern Himalayan orogen. It likely records the indentation of the Burma Terrane into the Eastern Himalayan collision zone, forming the modern Eastern Himalayan Syntaxis.

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Section: Indo-burman Rangesmentioning

confidence: 99%

Burma Terrane Collision and Northward Indentation in the Eastern Himalayas Recorded in the Eocene‐Miocene Chindwin Basin (Myanmar)

et al. 2020

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“…Previous work has proposed first arrival of Asian material into the CMB in late Eocene times (Licht et al., 2018), Oligocene times (Arboit et al., 2021; Zhang et al., 2021) or not until the Miocene (Westerweel et al., 2020). Second, we determine the timing of uplift of the IBR, exhumation of which has been debatably linked to collision of the WBT with India (e.g., Aitchison et al., 2007; Morley, 2009; Morley et al., 2020; Verard et al., 2017). Previous work has indicated there is tentative evidence of IBR exhumation in the Eocene, with more substantial exhumation around the Oligo‐Miocene boundary (Licht et al., 2018; Najman et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

The Timing of Collision Between Asia and the West Burma Terrane, and the Development of the Indo‐Burman Ranges

Najman

Sobel

Millar³

et al. 2022

Tectonics

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The West Burma Terrane (WBT) is a small terrane bounded to the east by the Asian Sibumasu Block and to the west by the Indo‐Burman Ranges (IBR), the latter being an exhumed accretionary prism that formed during subduction of Indian oceanic lithosphere beneath Asia. Understanding the geological history of the WBT is important for reconstruction of the closure history of the Tethys Ocean and India‐Asia collision. Currently there are major discrepancies in the proposed timings of collision between the WBT with both India and Asia; whether the WBT collided with India or Asia first is debated, and proposed timings of collisions stretch from the Mesozoic to the Cenozoic. We undertook a multi‐technique provenance study involving petrography, detrital zircon U‐Pb and Hf analyses, rutile U‐Pb analyses and Sr‐Nd bulk rock analyses on sediments of the Central Myanmar Basins of the WBT. We determined that the first arrival of Asian material into the basin occurred after the earliest late Eocene and by the early Oligocene, thus placing a minimum constraint on the timing of WBT‐Asia collision. Our low temperature thermochronological study of the IBR records two periods of exhumation, in the early‐middle Eocene, and at the Oligo‐Miocene boundary. The Eocene event may be associated with the collision of the WBT with India. The later event at the Oligo‐Miocene boundary may be associated with changes in wedge dynamics resulting from increased sediment supply to the system; however a number of other possible causes provide equally plausible explanations for both events.

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Anuran Lissamphibian and Squamate Reptiles from the Upper Cretaceous (Maastrichtian) Deccan Intertrappean Sites in Central India, with a Review of Lissamphibian and Squamate Diversity in the Northward Drifting Indian Plate

Rage¹,

Prasad

Verma

et al. 2020

Vertebrate Paleobiology and Paleoanthropology

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The Indian Promontory: A Bridge between Plate Tectonics and Life Evolution Models

Abstract: Since the 1970's, the Cretaceous-Cenozoic

Cited by 9 publications

References 47 publications

Burma Terrane Collision and Northward Indentation in the Eastern Himalayas Recorded in the Eocene‐Miocene Chindwin Basin (Myanmar)

Burma Terrane Collision and Northward Indentation in the Eastern Himalayas Recorded in the Eocene‐Miocene Chindwin Basin (Myanmar)

The Timing of Collision Between Asia and the West Burma Terrane, and the Development of the Indo‐Burman Ranges

Anuran Lissamphibian and Squamate Reptiles from the Upper Cretaceous (Maastrichtian) Deccan Intertrappean Sites in Central India, with a Review of Lissamphibian and Squamate Diversity in the Northward Drifting Indian Plate

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