Neoproterozoic tsunamiite: Upper Bhander Sandstone, Central India

Sarkar, S.; Bose, Pradip; Eriksson, P.G.

doi:10.1016/j.sedgeo.2011.04.012

Cited by 13 publications

(2 citation statements)

References 36 publications

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“…Neoproterozoic aeolian systems accumulated in intracratonic rift basins (e.g. Grey et al 2005;Sarkar et al, 2011). From this, it is clear that the majority of preserved Precambrian aeolian systems are syn-rift depositional systems in which preservation of aeolian deposits occurred during the rifting phases of supercontinents because of the associated increase in accommodation space (Eriksson & Simpson, 1998).…”

Section: Evolution Of Aeolian Sand Systems Through Earth Historymentioning

confidence: 99%

Archean to Recent aeolian sand systems and their sedimentary record: Current understanding and future prospects

et al. 2014

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The sedimentary record of aeolian sand systems extends from the Archean to the Quaternary, yet current understanding of aeolian sedimentary processes and product remains limited. Most preserved aeolian successions represent inland sand-sea or dunefield (erg) deposits, whereas coastal systems are primarily known from the Cenozoic. The complexity of aeolian sedimentary processes and facies variability are under-represented and excessively simplified in current facies models, which are not sufficiently refined to reliably account for the complexity inherent in bedform morphology and migratory behaviour, and therefore cannot be used to consistently account for and predict the nature of the preserved sedimentary record in terms of formative processes. Archean and Neoproterozoic aeolian successions remain poorly constrained. Palaeozoic ergs developed and accumulated in relation to the palaeogeographical location of land masses and desert belts. During the Triassic, widespread desert conditions prevailed across much of Europe. During the Jurassic, extensive ergs developed in North America and gave rise to anomalously thick aeolian successions. Cretaceous aeolian successions are widespread in South America, Africa, Asia, and locally in Europe (Spain) and the USA. Several Eocene to Pliocene successions represent the direct precursors to the presentday systems. Quaternary systems include major sand seas (ergs) in low-lattitude and mid-latitude arid regions, Pleistocene carbonate and Holocene-Modern siliciclastic coastal systems. The sedimentary record of most modern aeolian systems remains largely unknown. The majority of palaeoenvironmental reconstructions of aeolian systems envisage transverse dunes, whereas successions representing linear and star dunes remain under-recognized. STATE OF THE SCIENCEtemporal transition between different mechanisms of accumulation and preservation; and (iv) is it reasonable to assume that the deposits of preserved aeolian successions necessarily represent an unbiased record of the conditions that prevailed during episodes of Earth history when large-scale aeolian systems were active, or has the evidence to support the existence of other major desert basins been lost for many periods throughout Earth history?

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Section: Evolution Of Aeolian Sand Systems Through Earth Historymentioning

confidence: 99%

Archean to Recent aeolian sand systems and their sedimentary record: Current understanding and future prospects

et al. 2014

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“…For the lower part of the Supergroup, this chapter dwells mostly on this northwestern outcrop area, because of the facies contrast that exists between this and the well-studied type area (Bose et al 1997(Bose et al , 2001Sarkar et al 2006Sarkar et al , 2011Banerjee et al 2008;Ojha 2012). For the lower part of the Supergroup, this chapter dwells mostly on this northwestern outcrop area, because of the facies contrast that exists between this and the well-studied type area (Bose et al 1997(Bose et al , 2001Sarkar et al 2006Sarkar et al , 2011Banerjee et al 2008;Ojha 2012).…”

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Chapter 6 Proterozoic Vindhyan Basin: configuration and evolution

Bose

Sarkar

Das

et al. 2015

Memoirs

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This chapter attempts an understanding of the Proterozoic Vindhyan Basin history in the broad framework of central India. Although the entire Vindhyan Supergroup is within the scope of this work, particular attention is paid to the little-known northwestern fringe exposures. Distinctive facies assemblages and diverse palaeocurrents in these exposures of the Lower Vindhyan play a pivotal role in the interpretation. Analysis of outcrop and subsurface data that extend under the Gangetic alluvium to the north of the Vindhyan outcrops further supports the hypothesis that an east-west-elongated basement ridge initially separated the master Vindhyan Basin from smaller contemporary basins to the north. Deposition took place in isolated lacustrine and fluvial basins north of the divide and largely in a marine realm south. Dextral shear accompanying rifting generated ridges that criss-crossed the Lower Vindhyan seafloor to the south. The uniform character of the Upper Vindhyan throughout, nevertheless, testifies to later drowning of the divide and unification of all of the basins as a consequence of regional tilt northward. However, the extended Vindhyan Sea was restricted by a second eastwest-elongated ridge from merger with the contemporary Proterozoic sea further north, disparate sediments of which have been encountered in a few drill cores only.

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