Paleogeography and sediment dispersal patterns of the proterozoic Bhander Group, western India

Akhtar, K.

doi:10.1016/0031-0182(78)90012-3

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…Combining past studies and the present geochronological data, potential sources for these zircons could be inferred as the Archean Bundelkhand Gneissic complex, gneissic and granitic rocks of the CITZ (mainly Mahakoshal Belt) which are exposed close to the Vindhyan Basin, and the recycled sedimentary rocks/sandstones of the Rewa and Kaimur Groups. It is important to note here that north, northwest and west directed paleocurrent patterns have been reported for the Upper Vindhyan sediments (Akhtar, 1978;Ansari, 1994;Bhattacharya and Morad, 1993;Verma and Shukla, 2015), which indicate that the detritus is largely coming from the south, southeast or east of the Vindhyan belt. Multiple lines of evidence including the north and northwest (west) directed paleocurrent patterns (Akhtar, 1978;Ansari, 1994;Bhattacharya and Morad, 1993;Raza and Casshyap, 1996;Verma and Shukla, 2015) and detrital zircon geochronology suggest the Satpura-Mahakoshal/Bijawar highlands (CITZ) lying in the south and southeast (east) of the basin as the dominant source of detritus for the Upper Vindhyan sandstones exposed in and around Bhopal (Fig.…”

Section: Potential Sources Of Detrital Zircons Of Upper Bhander Sands...mentioning

confidence: 50%

“…These younger clastic sedimentary rocks of the Cretaceous provide insights into the pre-Cretaceous provenance, as well as additional data to explore the age discrepancy of the Upper Vindhyan. We integrated zircon age data with our petrographic and geochemical data along with the published paleocurrent data (e.g., Akhtar, 1978;Ansari, 1994;Bhattacharya and Morad, 1993;Chanda and Bhattacharya, 1966;Raza and Casshyap) to provide an improved understanding of the provenance for these Proterozoic and Cretaceous sandstones.…”

Section: Introductionmentioning

confidence: 99%

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Detrital zircon U-Pb ages of Proterozoic and Cretaceous sandstones of Narmada region in Central India: Implications for provenance and the closure age of the Vindhyan Basin

Kumari¹,

Tandon²,

Kallukalam³

et al. 2023

Preprint

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This study presents detrital zircon U-Pb ages of the Upper Bhander Sandstones from the Bhopal inlier, and the overlying Cretaceous sandstones from Jabalpur, Central India. These data are combined with existing palaeobiological evidence to address the issue of lack of convergence between geochronology and biochronology of the Upper Vindhyan succession in central India. The age-spectra of Upper Bhander Sandstone show the dominance of detrital zircon population between 1500-1900 Ma, a subordinate cluster of 2400-2600 Ma, and a single youngest zircon grain of ~770 Ma. These detrital zircon ages correlate with the timing of granite magmatism in Bundelkhand, Aravalli and Central Indian Tectonic Zone (CITZ), implying their derivation from these terranes. The finding of a single zircon of 770 + 12 Ma, supports the premise that Vindhyan deposition extended in to the late Tonian. Cretaceous sandstones of the Jabalpur and Lameta Formations contain zircon grains of ~550 Ma and ~700-800 Ma age. Except for the evidence from this youngest Vindhyan sedimentary sequence, no rocks of Late Neoproterozoic-Early Cambrian age have so far been reported from Central India, which can be correlated with these zircon ages. Comparable age-spectra of the Upper Bhander and the Cretaceous sandstones indicates that the proximal Vindhyan sandstones could have supplied detritus to these younger sandstones. These Cretaceous sandstones also constitute a window to understand the geology of the pre-Cretaceous eroded terrain, and support the premise that the Vindhyan sedimentation did not terminate at 1000 Ma.

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Section: Potential Sources Of Detrital Zircons Of Upper Bhander Sands...mentioning

confidence: 50%

Section: Introductionmentioning

confidence: 99%

Detrital zircon U-Pb ages of Proterozoic and Cretaceous sandstones of Narmada region in Central India: Implications for provenance and the closure age of the Vindhyan Basin

Kumari¹,

Tandon²,

Kallukalam³

et al. 2023

Preprint

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“…Bose et al 1999;Chakraborty and Chakraborty 2001). That the Bundihill, Sirbu and lower Shikaoda Formations represent deposits of shallow coastal¯ats has been noted earlier by several workers (Akhtar 1978;Singh 1973Singh , 1976Singh , 1980Chanda and 126 c. chakraborty 1974;Bhattacharyya et al 1980;Bose and Choudhury 1990;Bose et al 1999). However, none of these studies provides a synthesis of the sedimentary features of the Bhander coastal¯at succession in detail, and neither did they explore the implications of the dominance of mud and the great thickness and lateral extent of the package.…”

Section: The Bhander Coastal Flat Depositsmentioning

confidence: 75%

Lagoon–tidal flat sedimentation in an epeiric sea: Proterozoic Bhander Group, Son Valley, India

Chakraborty

2001

Geological Journal

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The Bhander Group, the uppermost stratigraphic unit of the Proterozoic Vindhyan Supergroup in Son Valley, exhibits in its upper part a 550 m thick, muddy siliciclastic succession characterized by features indicative of deposition in a wave-affected coastal, lagoon±tidal¯at environment suffering repeated submergence and emergence. The basic architecture of the deposit is alternation of centimetre-to decimetre-thick sheet-like interbeds of coarser clastics (mainly sandstone) and decimetre-thick mudstones. The coarser interlayers are dominated by a variety of ripple-formed laminations. The preserved ripple forms on bed-top surfaces and their internal lamination style suggest both oscillatory and combined¯ows for their formation. Interference, superimposed, ladder-back and¯at-topped ripples are also common. Synsedimentary cracks, wrinkle marks, features resembling rain prints and adhesion structures occur in profusion on bed-top surfaces. Salt pseudomorphs are also present at the bases of beds. The mudstone intervals represent suspension settlement and show partings with interfaces characterized by synsedimentary cracks. It is inferred that the sediments were deposited on a coastal plain characterized by a peritidal (supratidal±intertidal)¯at and evaporative lagoon suffering repeated submergence and emergence due to storm-induced coastal setup and setdown in addition to tidal¯uctuations.The 550 m thick coastal¯at succession is surprisingly devoid of any barrier bar deposits and also lacks shoreface and shelfal strata. The large areal extent of the coastal¯at succession (c. 100,000 km 2 ) and its great thickness indicate an extremely lowgradient epeiric basin characterized by an extensive coastal¯at sheltered from the deeper marine domain. It is inferred that the Bhander coastal¯at was protected from the open sea by the Bundelkhand basement arch to the north of the Vindhyan basin, instead of barrier bars. Such a setting favoured accumulation of a high proportion of terrigenous mud in the coastal plain, in contrast to many described examples from the Proterozoic.

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“…The palaeocurrent data suggest that in Rajasthan sector, the current flowed west or northwest during the Kaimur and Rewa times but northwards in the Lower Bhander period (Srivastava and Bhardwaj, 1978;Akhtar, 1978;Soni, 1987). Therefore, the source terrain of upper Vindhyan succession was on east, southeast and south of present day Vindhyan basin.…”

Section: Provenance Characteristics and Tectonic Implicationsmentioning

confidence: 95%

“…Similarly, the sandstone units of the Rewa Group are referred to as Rewa sandstone and those of Bhander Group as Bhander sandstone, the terms, used in type area of Vindhyans of the Son valley and used in international publications. In the Rajasthan sector, the Vindhyan sediments were deposited in environments ranging from fluvial to deep marine (Bhardwaj, 1973;Akhtar, 1978;Bose et al, 2001). Prasad (1984) has worked out a detailed account of geology of the Vindhyan rocks of Rajasthan sector ( Fig.…”

Section: Geological Setting Of Upper Vindhyan Group Of Rajasthanmentioning

confidence: 98%

Geochemistry of Mesoproterozoic sedimentary rocks of upper Vindhyan Group, southeastern Rajasthan and implications for weathering history, composition and tectonic setting of continental crust in the northern part of Indian shield

Raza

Khan

Bhardwaj

et al. 2012

Journal of Asian Earth Sciences

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Paleogeography and sediment dispersal patterns of the proterozoic Bhander Group, western India

Cited by 8 publications

References 17 publications

Detrital zircon U-Pb ages of Proterozoic and Cretaceous sandstones of Narmada region in Central India: Implications for provenance and the closure age of the Vindhyan Basin

Detrital zircon U-Pb ages of Proterozoic and Cretaceous sandstones of Narmada region in Central India: Implications for provenance and the closure age of the Vindhyan Basin

Lagoon–tidal flat sedimentation in an epeiric sea: Proterozoic Bhander Group, Son Valley, India

Geochemistry of Mesoproterozoic sedimentary rocks of upper Vindhyan Group, southeastern Rajasthan and implications for weathering history, composition and tectonic setting of continental crust in the northern part of Indian shield

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