Mesozoic woods from India: Nomenclature review and palaeoclimatic implications

Chopparapu, Chinnappa; Rajanikanth, Annamraju

doi:10.1016/j.palwor.2017.12.004

Cited by 4 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Agathoxylon santacruzense described here show distinct growth rings and they are of type A or B as classified by Creber & Chaloner (1984) and illustrated by Brison et al (2001) reflecting paleoclimate of this area did have marked seasons during the tree growth (Fritts, 1976;Creber & Chaloner, 1985;Francis & Poole, 2002;Yang et al, 2013). The other wood taxa Cupressinoxylon, Ginkgoxylon, Podocarpoxylon, Prototaxoxylon and Taxaceoxylon with distinct growth rings reported from the Kota Formation also favors such interpretations (Chinnappa & Rajanikanth, 2018). Nevertheless, the growth rings of these woods differ from the rings of temperate woods such as Pinus sylvestris, and show a close similarity to the growth rings of modern tropical to subtropical conifers growing in the southern hemisphere.…”

Section: Stratigraphic and Palaeoecological Significancesupporting

confidence: 60%

“…As no datable magmatic rocks occur above, below or intercalated with the formation, no radiometric dating is available. The Early Jurassic to the Early Cretaceous age was suggested based on faunal and floral evidence (Vijaya & Prasad, 2001;Chinnappa et al, 2018). However, the recent discovery of fossil fauna strongly suggested Lower to Middle age connotation such as the Early to Middle Jurassic (Parmar et al, 2013).…”

Section: Stratigraphic and Palaeoecological Significancementioning

confidence: 99%

See 1 more Smart Citation

Agathoxylon santacruzense Kloster & Gnaedinger from the Lower–Middle Jurassic Kota Formation, India and its paleoenvironmental implications

Chopparapu¹,

Kavali²

2020

Rev. bras. paleontol.

View full text Add to dashboard Cite

Section: Stratigraphic and Palaeoecological Significancesupporting

confidence: 60%

Section: Stratigraphic and Palaeoecological Significancementioning

confidence: 99%

Agathoxylon santacruzense Kloster & Gnaedinger from the Lower–Middle Jurassic Kota Formation, India and its paleoenvironmental implications

Chopparapu¹,

Kavali²

2020

Rev. bras. paleontol.

View full text Add to dashboard Cite

“…Palaeogeographical reconstructions indicate that the depositional location of northwest India in the Lower Cretaceous Epoch was approximately 40° south of the equator where modelling indicates it would have been a subtropical to temperate seasonal climate with mean annual temperatures around 17°C (Goswami, 2011; Scotese, 2011; Scotese et al, 2007) and with relatively low precipitation rates (1.5–12 cm/month; Ali & Aitchison, 2014; Chatterjee et al, 2013; Chopparapu & Rajanikanth, 2018; Hallam, 1985). The depositional climate was thus dry and temperate.…”

Section: Discussionmentioning

confidence: 99%

Origin of Lower Cretaceous quartzose arenites in northern India and the Indus Basins of Pakistan—The result of provenance composition, weathering or diagenesis?

et al. 2022

View full text Add to dashboard Cite

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 suggests 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 northwest Indian plate and into surrounding basins. EAGE BEAUMONT et al. Highlights • Ghaggar-Hakra Formation sandstones are compositionally quartzose arenites. • Weathering and diagenesis cannot account for the quartzose arenite composition. • Alternative explanation is that Ghaggar-Hakra sandstones are multicycle sediments. • Most likely from the quartzose arenites of the Cambrian Jodhpur Group.

show abstract

A Review of Stratigraphy, Depositional Setting and Paleoclimate of the Mesozoic Basins of India

Dasgupta

2021

Mesozoic Stratigraphy of India

View full text Add to dashboard Cite

Mesozoic woods from India: Nomenclature review and palaeoclimatic implications

Cited by 4 publications

References 39 publications

Agathoxylon santacruzense Kloster & Gnaedinger from the Lower–Middle Jurassic Kota Formation, India and its paleoenvironmental implications

Agathoxylon santacruzense Kloster & Gnaedinger from the Lower–Middle Jurassic Kota Formation, India and its paleoenvironmental implications

Origin of Lower Cretaceous quartzose arenites in northern India and the Indus Basins of Pakistan—The result of provenance composition, weathering or diagenesis?

A Review of Stratigraphy, Depositional Setting and Paleoclimate of the Mesozoic Basins of India

Contact Info

Product

Resources

About