Revisiting the boundary between the Lower and Upper Vindhyan, Son valley, India

Mandal, Sabyasachi; Choudhuri, Adrita; Mondal, Indrani; Sarkar, S.; Chakraborty, Prithwish; Banerjee, Santanu

doi:10.1007/s12040-019-1250-2

Cited by 13 publications

(2 citation statements)

References 55 publications

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“…Unconformably overlying early riftogenic sediments, the Vindhyan Supergroup occurs as a largely undeformed sediment package, dominated by immature siliciclastics and carbonate-rich sediments in its lower part and mature siliciclastics in its upper part. The Supergroup is subdivided into two groupsthe Lower Vindhyan (Semri Group) and Upper Vindhyan (Kaimur, Rewa and Bhander)separated by a basin-wide unconformity and its correlative conformity (Bose et al 2015;Mandal et al 2019;Fig. 1b).…”

Section: Geological Setting and Stratigraphic Frameworkmentioning

confidence: 99%

Shales of Palaeo-Mesoproterozoic Vindhyan Basin, central India: insight into sedimentation dynamics of Proterozoic shelf

Singh¹,

Chakraborty

2020

Geol. Mag.

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The Vindhyan Supergroup represents the largest Proterozoic sedimentary basin fill in the Indian shield. In addition to some significant palaeobiological discoveries, the sedimentary sequence of the Vindhyan, particularly its argillaceous intervals, holds crucial information for our understanding of sedimentation dynamics in Proterozoic clastic shelves. Here we attempt an extensive, although not exhaustive, review of the physical characteristics of six argillaceous (shale) intervals (Arangi, Koldaha, Rampur, Bijaygarh, Rewa and Sirbu shale) from the Son valley sector, Vindhyan Basin, augmented with new observations to unravel the status of current understanding in terms of palaeo-flow dynamics, shelf sedimentation processes and dispersal pattern, depositional cyclicity and basinal tectonics. The sedimentary attributes of Vindhyan shales reveal their deposition largely in relative bathymetry fluctuating from distal shoreface or inner shelf (near to fair-weather wave base) to distal shelf below storm wave base. More often than not, the Vindhyan shelf was storm-infested and the operation of both storm-generated return flow and Coriolis-force-guided geostrophic currents are documented from different stratigraphic intervals of argillaceous successions. The thick arenaceous intervals interrupting the deposits of the Koldaha, Rewa and Sirbu shales at multiple stratigraphic levels indicate the presence of a fan delta and braided fluvial system during intermittent regressive stands of sea level or event deposition during a sea-level highstand, respectively. Based on facies pattern and flow vectors, a rift-related half-graben model is inferred for Arangi and Koldaha shale and a low-gradient stable-shelf model with well-defined energy gradient is proposed for successions from Rampur shale onwards.

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Section: Geological Setting and Stratigraphic Frameworkmentioning

confidence: 99%

Shales of Palaeo-Mesoproterozoic Vindhyan Basin, central India: insight into sedimentation dynamics of Proterozoic shelf

Singh¹,

Chakraborty

2020

Geol. Mag.

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“…It covers a long period of sedimentation history spanning (~1800-500 Ma) during the Proterozoic eon (Quasim et al 2017;Yadav et al 2022c). The rocks of the Vindhyan Supergroup are divided into three outcrop sectors, namely, the Bundelkhand sector, the Son valley sector, and the Rajasthan sector (Chakraborty et al 2010;Mandal et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Geochemistry of an intercalated unit of arkose and shale of the Dhandraul Formation belonging to the Vindhyan Supergroup, Eastern India: Insights from provenance, depositional environment, and geodynamic set-up

Yadav

Das

2023

J. Sediment. Environ.

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In this study, we have presented a hitherto unreported mappable member of an intercalated unit of arkose and shale of the Dhandraul Formation of the Kaimur Group exposed in Kaimur district, Bihar, India which was not reported by earlier workers in the Vindhyan basin. It is a contribution for understanding the possible provenance, source area weathering, depositional environment, and geodynamic set-up of this member. Based on eld characteristics and petrography study, three lithofacies units have been identi ed viz. (i) coarse to medium-grained arkose, (ii) intercalated sequence of arkose and shale, and (iii) shale.Geochemically, these lithofacies predominantly occupied the eld of arkose and shale except samples fall in the eld of sub-arkose. These lithofacies display relatively an enrichment of SiO 2 and Al 2 O 3 and show low concentrations of MgO, CaO, Na 2 O, K 2 O, and TiO 2 . The values of ∑REE in arkose are varying from 78.74 to 128.81 ppm whereas the values of fractionation indicate (La/Sm) N (3.73-4.22), (La/Yb) N (7.33-15.59),(Gd/Yb) N (1.32-2.30), and Eu/Eu* (0.58-0.66). In shale, ∑REE ranges from 354.02 to 382.11 ppm while the fractionation contents of (La/Sm) N , (La/Yb) N , and (Gd/ Yb) N , and Eu/Eu* are ranging from 3.82 to 4.82, 7.65 to 11.85, 1.38 to 1.73, and 0.56 to 0.81. On the basis of rock fragments and paleocurrent direction, the possible sources are presumed to be the Chhotanagpur Gneissic Complex and the Mahakoshal Group of rocks, which lie towards the south and southwest. In the binary and ternary plots, most of the samples of arkose and shale have mostly occupied the eld of passive margin tectonic setting except one sample comes in the eld of the continental island arc. Based on mineralogical and textural maturity, sedimentary structures and the overall sequence of these lithofacies from sandstone to shale member of the Dhandraul Formation show ning upward sequence which attributes the deposition in a shallow coastal uvial-marine environment in a transgressive phase. This discovery has opened a new opportunity to relook at the depositional environment of the Dhandraul Formation in other parts of the Vindhyan basin.

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Facies and Microfacies Analysis of Kallankurichchi Formation, Ariyalur Group with an Inkling of Sequence Stratigraphy

Srimani

Mandal

Sarkar

2021

Mesozoic Stratigraphy of India

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Revisiting the boundary between the Lower and Upper Vindhyan, Son valley, India

Cited by 13 publications

References 55 publications

Shales of Palaeo-Mesoproterozoic Vindhyan Basin, central India: insight into sedimentation dynamics of Proterozoic shelf

Shales of Palaeo-Mesoproterozoic Vindhyan Basin, central India: insight into sedimentation dynamics of Proterozoic shelf

Geochemistry of an intercalated unit of arkose and shale of the Dhandraul Formation belonging to the Vindhyan Supergroup, Eastern India: Insights from provenance, depositional environment, and geodynamic set-up

Facies and Microfacies Analysis of Kallankurichchi Formation, Ariyalur Group with an Inkling of Sequence Stratigraphy

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