Re–Os depositional age for black shales from the Kaimur Group, Upper Vindhyan, India

Tripathy, Gyana Ranjan; Singh, Sunil Kumar

doi:10.1016/j.chemgeo.2015.08.011

Cited by 61 publications

(40 citation statements)

References 76 publications

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“…Sediment in restricted basins are known to exhibit highly variable 187 Os/ 188 Os as they are sensitive to short-term variability in weathering sources and runoff (McArthur et al, 2008;Cumming et al, 2012;Cumming et al, 2013;Tripathy et al, 2015). Therefore, on the condition that a sufficient spread in 187 Re/ 188 Os is maintained, utilizing samples from a reduced stratigraphic interval, especially from restricted basins, can minimize age uncertainty by limiting the depositional timescale over which samples were deposited and thus stratigraphic variation in initial 187 Os/ 188 Os (Os i ; Xu et al, 2009;Cumming et al, 2012;Xu et al, 2014).…”

Section: Therefore Samples From Section Mb1501 Of the Same Maximum Fmentioning

confidence: 99%

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

Gibson

Shih

Cumming

et al. 2017

Geology

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Shale samples were collected from outcrops that lack evidence for secondary mineralization from hydrothermal activity and weathered regions that may have experienced alteration were also avoided. Sample sets comprise several 100-200 g samples excavated 10-30 cm from the outcrop surface to target fresh material. Samples were collected along strike from a narrow stratigraphic range (<10 cm), as well as from a vertical profile (up to 5 m). The most organic-rich and least visibly-weathered samples were then chosen for digestion and isotopic

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Section: Therefore Samples From Section Mb1501 Of the Same Maximum Fmentioning

confidence: 99%

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

Gibson

Shih

Cumming

et al. 2017

Geology

162

128

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“…The age distributions of the two Ujhani samples, with peaks at 1200, 1450 and 1650 Ma, closely resemble those from the upper Vindhyan Kaimur Group (Fig. ), which is inferred to be late Mesoproterozoic to early Neoproterozoic based on detrital zircon data (McKenzie et al ., , ; Turner et al ., ) and a 1210 ± 52 Ma Re–Os age (Tripathy and Singh, ). In contrast, the Ujhani spectra are distinct from a large number of late Neoproterozoic–early Palaeozoic spectra from northern India, Nepal, Tibet and Bhutan, which include prominent Neoproterozoic and early Cambrian peaks (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…(), Ray et al . () and Tripathy and Singh (). The stratigraphic ranges of Tappania plana and Spiromorpha segmentata in the lower Vindhyan Supergroup (Prasad et al ., ) and in the lower Ganga Supergroup (Prasad and Asher, ) are marked, with thicker bars representing common occurrences and thinner bars representing rare occurrences.…”

Section: Introductionmentioning

confidence: 99%

“…The evaluation of these hypotheses was partly complicated by the highly publicised controversy over the age of the Vindhyan Supergroup (Azmi et al ., ; Bengtson et al ., ). Now that the age of the Vindhyan Supergroup has been settled (Rasmussen et al ., ; Ray et al ., ; Bengtson et al ., ; Tripathy and Singh, ; but see Prasad and Asher, ), it is time to revisit these hypotheses by examining the age of the Ganga Supergroup.…”

Section: Introductionmentioning

confidence: 99%

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Biostratigraphic and detrital zircon age constraints on the basement of the Himalayan Foreland Basin: Implications for a Proterozoic link to the Lesser Himalaya and cratonic India

et al. 2016

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The Himalayan Foreland Basin in the Ganga Valley is key to assessing the pre‐collision relationship between cratonic India and the Himalaya – the world's largest mountain chain. The subsurface Ganga Supergroup, representing the sedimentary basement of the Ganga Valley, has been interpreted as a northern extension of the Proterozoic Vindhyan Supergroup in cratonic India. This interpretation is contentious because the depositional age of the Ganga Supergroup is not resolved: whereas the lower Ganga Supergroup is widely regarded as Proterozoic, the upper Ganga Supergroup has been variously inferred to include Neoproterozoic, lower Palaeozoic, or Cretaceous strata. Here, we integrate biostratigraphic and detrital zircon data from drill cores to show that the entire Ganga Supergroup is likely Proterozoic and can be correlated with Proterozoic successions on the northern Indian craton and in the Lesser Himalaya. This helps redefine the first‐order stratigraphic architecture and indicates broad depositional continuity along the northern Indian margin during the Proterozoic.

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“…; McKenzie et al . ; Tripathy & Singh ; Hughes ) controversy remains concerning the age constraints of the Ganga Supergroup and its correlation with the Proterozoic successions in the Vindhyan Basin and Lesser Himalaya. It has been hypothesized that the Ganga Supergroup was deposited in a separate basin with distinct origins, age and tectonic history relative to the Vindhyan Basin and Lesser Himalaya (Fuloria ; Prasad & Asher ).…”

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Late Mesoproterozoic – early Neoproterozoic organic‐walled microfossils from the Madhubani Group of the Ganga Valley, northern India

et al. 2017

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The age of the sedimentary basement of the Ganga Valley in northern India, which is represented by the entirely subsurface Ganga Supergroup, is key for addressing issues related to the tectonic history of the Himalaya. However, the stratigraphic correlations between the Ganga Supergroup in the Ganga Valley, the Vindhyan Supergroup in cratonic India to the south, and Proterozoic successions in the Lesser Himalaya to the north have long been a matter of controversy. This is largely because of the poor age constraint of the Madhubani Group of the upper Ganga Supergroup, which has been variously interpreted as Proterozoic, lower Palaeozoic, or even Mesozoic. To address this issue, we used a low manipulation maceration technique to extract organic‐walled microfossils from the Ujhani and Tilhar formations of the lower Madhubani Group. Our study recovered a total of 24 taxa, including Devisphaera corallis gen. et sp. nov. The co‐occurrence of Trachyhystrichosphaera aimika, Caudosphaera expansa and Annulusia annulata in the lower Madhubani Group indicates a late Mesoproterozoic to early Neoproterozoic age. Thus, the biostratigraphical data suggest a >300 myr depositional gap between the Madhubani Group and the immediately underlying Bahraich Group, which has been independently constrained to be upper Palaeoproterozoic to lower Mesoproterozoic in age. Therefore, the first‐order stratigraphic architecture, with a Palaeoproterozoic–Mesoproterozoic succession unconformably overlain by a Mesoproterozoic–Neoproterozoic succession, is closely similar throughout the Vindhyan Basin, Ganga Valley and Lesser Himalaya, suggesting a shared sedimentary and tectonic history among them.

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Re–Os depositional age for black shales from the Kaimur Group, Upper Vindhyan, India

Cited by 61 publications

References 76 publications

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

Biostratigraphic and detrital zircon age constraints on the basement of the Himalayan Foreland Basin: Implications for a Proterozoic link to the Lesser Himalaya and cratonic India

Late Mesoproterozoic – early Neoproterozoic organic‐walled microfossils from the Madhubani Group of the Ganga Valley, northern India

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