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Origin of Lower Cretaceous Quartzose Arenites in northern India and the Indus Basins of Pakistan – the result of provenance composition, weathering or diagenesis?

Beaumont, Hazel

Origin of Lower Cretaceous Quartzose Arenites in northern India and the Indus Basins of Pakistan – the result of provenance composition, weathering or diagenesis? Thumbnail


Authors



Contributors

Stuart D. Burley
Other

Tim Breitfeld
Other

Thomas Gould
Other

Stuart M. Clarke
Other

Abstract

Lower Cretaceous (Aptian-Albian) sandstones of the Ghaggar-Hakra Formation in the Barmer Basin of northwest Rajasthan, India, have a complex depositional history which is confusing given they are quartzose arenites. The heavy mineral grains are very well-rounded and the assemblage is dominated by zircon and rutile grains suggesting that the sediments have been recycled multiple times, whilst the presence of staurolite indicates a metapelite provenance component. Petrographical analysis suggests that extreme diagenesis cannot account for the quartzose arenite composition, despite Early Cretaceous soil formation and at least two periods of subsequent telogenetic modification. An alternative explanation to extreme chemical weathering in the provenance area is that the Ghaggar-Hakra sandstones are multi-cycle sediments derived, at least in part, from the quartzose arenites of the Cambrian Jodhpur Group.

This analysis suggest that variations in detrital mineralogy across the Western India Rift System and Indus Basins are the result of transcontinental fluvial transport systems sourcing sediment from specific basement highs (Nagar Parker High, Devikot High, Deodar Ridge and Aravalli Mountain Range) mixed with varying proportions of sediment derived from sandstones of the Jodhpur Group. Consequently, we suggest that Cretaceous fluvial systems were controlled by the local palaeogeographies within the failed rifts of the Barmer and Cambay Basins, and that both basins formed barriers to sediment transport from the Aravalli Mountain Range across the north-west Indian plate and into surrounding basins.

Citation

Beaumont, H. (in press). Origin of Lower Cretaceous Quartzose Arenites in northern India and the Indus Basins of Pakistan – the result of provenance composition, weathering or diagenesis?. Basin Research, https://doi.org/10.1111/bre.12717

Journal Article Type Article
Acceptance Date Sep 2, 2022
Online Publication Date Sep 22, 2022
Deposit Date Sep 22, 2022
Publicly Available Date Sep 22, 2022
Journal Basin Research
Print ISSN 0950-091X
Electronic ISSN 1365-2117
Publisher Wiley
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1111/bre.12717
Public URL https://uwe-repository.worktribe.com/output/10000018
Publisher URL https://onlinelibrary.wiley.com/doi/10.1111/bre.12717

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