Nature, Occurrence, and Lithological Setup of Youngest Toba Tuff Volcanic Ash, Purna Alluvial Basin, Central India

Srivastava, Ashok; Singh, Ajab

doi:10.1086/705326

Cited by 12 publications

(3 citation statements)

References 40 publications

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“…She differentiated primary tephra based on its physical attributes, that is, thin streaks, light grey colour, structureless powdery material and suggested their deposition in the areas of low‐energy condition. Recently, Srivastava and Singh (2019a, 2019b) also reported primary ash horizons associated with reworked tephra from the Kapileshwar area of the referred basin and marked the same as light grey, massive to slightly laminated thin units. They further suggested that the ash in the basin area was deposited in the closed water body of low‐energy condition.…”

Section: Discussionmentioning

confidence: 91%

“…It is considered as the extension of the previous facies, that is, stratified sandy‐silty‐clay (Fl) facies. Information about the lithological and lithofacies architectures of both the successions, their comparison with other ash‐bearing lithocolumns in the basin area, and geochemical signatures of paleosols and calcretes therein have been provided in detail by Srivastava & Singh, 2019b, Srivastava, Bansod, Singh, & Sharma, 2019.…”

Section: Lithological Set‐up Of the Ash‐bearing Localitiesmentioning

confidence: 99%

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Lithological, physical and chemical attributes of primary volcanic ash of YTT, Purna alluvial basin, Central India

Srivastava

Singh

2020

Geological Journal

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Youngest Toba Tuff (YTT) ash preserved at two different localities in the Quaternary sediments of Purna alluvial basin have been categorised as of the primary nature on the basis of for their lithological, physical and geochemical characteristics. These ash are light grey, massive to faintly laminated and occur as discontinuous beds of 15-20 cm thickness, extending laterally for 70-100 m that are hosted in yellowishbrown, laminated silty-clay lithounits. It consists of high-quantity vitric grains represented by bubble wall, blocky and pumice shards in decreasing order of percentage, light and heavy minerals and fine-grained unidentifiable admixture. Major oxides data through EPMA of glass shards show rhyolitic composition being rich in SiO 2 , K 2 O and Na 2 O percentage, whereas ICP-MS data exhibit enriched LREE, depleted HREE and negative Eu anomaly. Pre-tephra successions at both the localities show preservations of various biogenic and non-biogenic structures having control of specific environmental conditions on their formation, that is, pedogenic calcretes, rhizolith balls and insect agriculture activities in the form of calcretised bodies.

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Section: Discussionmentioning

confidence: 91%

Section: Lithological Set‐up Of the Ash‐bearing Localitiesmentioning

confidence: 99%

Lithological, physical and chemical attributes of primary volcanic ash of YTT, Purna alluvial basin, Central India

Srivastava

Singh

2020

Geological Journal

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“…In last few years, considerable progress has been made towards Quaternary terrestrial sedimentation and palaeoclimatic reconstruction (Raj et al, 2015;Sridhar et al, 2016;Sridhar and Chamyal, 2018;Khonde et al, 2017a, b;Prizomwala et al, 2018). Contribution have also been made on calcrete profilling (Srivastava and Basand, 2019), palaeosol geochemistry and nature, occurrence, lithological and depositional set-up of Youngest Toba Tuff (YRR) ash (Srivastava and Singh, 2019b) that are preserved in Quaternary alluvial sediments of Purna basin, Central India. Based on the study of sediments in Pariyaj Lake in Gujarat Plains Raj et al (2015) indicated a wet climate and high lake stand during ~11,000, 7630 and between 4680 and 3500 cal yr BP.…”

Section: Quaternary Sedimentation and Palaeoclimaticre Constructionmentioning

confidence: 99%

Marine and Fluvial Sedimentation Including Erosion and Sediment Flux in Peninsular Indian Phanerozoic Basins

Banerjee¹,

Ghosh²,

Nagendra³

et al. 2020

PINSA

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This review presents a brief appraisal of the present understanding regarding marine and fluvial sedimentation in peninsular India in the background of global tectono-thermal events and relative sea level changes during the Phanerozoic. Sedimentary basins hosting the Phanerozoic deposits of peninsular India can be broadly categorized into two viz. Gondwana related half grabensand Meso-Cenozoic passive margins. Recent investigations document marine incursions in the former category of basins based on careful analysis of trace fossil assemblage and tide-and wave-originated sedimentary structures. The study of continental carbonates in the Upper Gondwana reveals widespread microbially mediated carbonate formation in freshwater systems, while the mud-dominated fluvial deposits in these basins show unique characteristics of the channel to overbank sediment transfer, related to a balance between sediment flux and erosion.The application of sequence stratigraphy provides a high-resolution analysis of passive continental margin sedimentary succession in Kutch, Cauvery and Jaisalmer basins. The origin of authigenic minerals has been integrated with the sequence stratigraphic framework in several Mesozoic and Cenozoic basins. A thorough biostratigraphic investigation reveals different order of sea-level cycles in the sedimentary deposits of Cauvery and Kutch basins and hyperthermal events in the Cenozoic of Kutch. Distinct ichnological assemblages characterize the transgressive and regressive deposits in Kutch and Jaisalmer basins. Quaternary terrestrial sedimentary records provide a high-resolution palaeoclimatic reconstruction.

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A Review Study on Youngest Toba Tuff Ash, Artifacts and Vertebrate Remains Preserved in the Quaternary Alluvial Sediments of India and Their Significances in Climate and Paleoenvironment Interpretations

et al. 2022

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Nature, Occurrence, and Lithological Setup of Youngest Toba Tuff Volcanic Ash, Purna Alluvial Basin, Central India

Cited by 12 publications

References 40 publications

Lithological, physical and chemical attributes of primary volcanic ash of YTT, Purna alluvial basin, Central India

Lithological, physical and chemical attributes of primary volcanic ash of YTT, Purna alluvial basin, Central India

Marine and Fluvial Sedimentation Including Erosion and Sediment Flux in Peninsular Indian Phanerozoic Basins

A Review Study on Youngest Toba Tuff Ash, Artifacts and Vertebrate Remains Preserved in the Quaternary Alluvial Sediments of India and Their Significances in Climate and Paleoenvironment Interpretations

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