Geochemical study of the Neoproterozoic clastic sedimentary rocks of the Khambal Formation (Sindreth Basin), Aravalli Craton, NW Indian Shield: Implications for paleoweathering, provenance, and geodynamic evolution

Khan, Tavheed; Sarma, D. Srinivasa; Khan, Mohammad Shamim

doi:10.1016/j.chemer.2019.125596

Cited by 10 publications

(3 citation statements)

References 65 publications

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“…Palaeoredox condition during deposition can be determined from transition trace elements like V, Ni, Co, Cr, and U and their relationship with TOC has been widely used from shales and finer clastic sediments (Algeo & Maynard, 2004; Kimura & Watanabe, 2001). The redox indices, such as U/Th, V/Cr, Ni/Co and V/(V + Ni) values from the studied shale samples showed that primarily oxic or suboxic conditions prevailed during deposition within the whole succession (Figure 13a–d) and values were collectively used to approximate the depositional condition (Jones & Manning, 1994; Rimmer, 2004; Riquier et al, 2006; Khan et al, 2020 reference therein). Although the wide range of samples exhibiting an oxic condition, for samples particularly in unit 3 these proxies consistently indicate a local redox stratified setting where most oxic conditions were exhibiting above a localized dysoxic (Ni/Co, V/Cr) or anoxic (U/Th) conditions (Figure 13a–d).…”

Section: Resultsmentioning

confidence: 99%

Multiproxy analysis constraining climatic control over the Cenozoic depositional history of Kachchh, Western India

Chaudhuri

Srivastava

et al. 2022

Geological Journal

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A well‐developed 86 m‐thick Cenozoic sedimentary succession in the Matanomadh area, western Kachchh, was studied to assess the stratigraphic positions of different units, ascertain depositional environments, and the degree of climatic controls over time depositional processes. Age‐diagnostic nannoplankton species Cyclicargolithus floridanus (46.29–12.1 Ma), Reticulofenestra dictyoda (53–30.8 Ma), Reticulofenestra minuta (50.5–2.59 Ma) and foraminiferal species, for example, Orbulinoides beckmanni (41–39.5 Ma) found across studied units envisage the stratigraphic age and palaeoenvironment. CaO with strong negative elemental correlation, binary/ternary discriminant tectonic and depositional regimes cross‐plot from units indicate the biogenic origin of limestones and shales were formed in typical passive, marginal, shallow littoral settings with plausible detritus influx from Deccan basaltic provenance. Total organic carbon with TE‐REE respectively connotes a sedimentation process in a nearly consistent open shallow marine, locally transient semi‐restricted marginal basin in a tropical‐equatorial region. Furthermore, principal component analysis (PCA) of weathering indices based on elemental abundance and X‐ray diffraction data of clays deterministically suggest with empirical relation between humid tropical climate‐induced weathering and fluctuant terrestrial influx. Palaeoredox indices with biological data demonstrate localized redox‐stratified conditions. However, coherent signatures of the global events such as Eocene Thermal Maximum‐2, Middle Eocene Climatic Optimum, and Mid Miocene Climatic Optimum can be traced and validated by synthesizing geochemical data for direct/indirect estimation of sediment routing, rainfall (αAlMg and αAlCa) and climate proxies (PCA), productivity indices (Babio, Cubio and Nibio), and localized periodic oxic‐dysoxic environment (V/Cr, U/Th, Ni/Co) from core samples.

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Section: Resultsmentioning

confidence: 99%

Multiproxy analysis constraining climatic control over the Cenozoic depositional history of Kachchh, Western India

Chaudhuri

Srivastava

et al. 2022

Geological Journal

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“…Its formation is closely linked to the tectonic activities of three major structural domains: Paleo-Asia, Tethys, and Circum-Pacific. − The western segment of the northern part of the basin lies between the Yimeng Uplift and Tianhuan syncline structural units, which have undergone multiple phases of intense tectonic movement. These movements have posed challenges in determining the provenance of deposits and simultaneously introduced significant uncertainties in reservoir predictions for sandstone-type uranium deposits within the basin. − Detrital sediments are crucial indicators for deciphering the tectonic background of sedimentary basins, evolution of intracontinental basins, and characterization of source rock properties. − Sandstone-type uranium deposits exhibit distinct characteristics because the sand body is controlled by the facies and the ore is controlled by the sand body . As a result, provenance investigations of sand bodies have become an essential prerequisite for conducting prospecting efforts targeting sandstone-type uranium deposits.…”

Section: Introductionmentioning

confidence: 99%

Provenance and Tectonic Setting of the Lower Cretaceous Huanhe Formation in the Northwestern Ordos Basin and Its Implications for Uranium Mineralization

Sun,

Li,

Xia

et al. 2024

ACS Omega

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The Ordos Basin is an important sandstone-type uranium enrichment region in China, and the Lower Cretaceous Huanhe Formation has attracted significant attention as a newly discovered ore-bearing stratum. To elucidate the provenance, tectonic background, and sedimentary environment constraints on uranium enrichment in the Huanhe Formation sandstone-type uranium deposits, 10 representative sandstone samples from the study area were analyzed by using electron microscopy, X-ray fluorescence (XRF), inductively coupled plasma mass spectrometry (ICP-MS), and electron probe microanalysis. Independent uranium minerals in the Yihewusu area of Hangjin Banner were shown for the first time to be composed mainly of coffinite and titanium-uranium oxide, with trace amounts of pitchblende. The major element diagrams of the sandstone and ratios of Sr/Ba, V/Cr, and U/Th and enrichment factors of Mo and U revealed that the source rocks of the Huanhe Formation sandstone in the study area were intermediate-felsic igneous rocks. The tectonic setting is characterized as an active continental margin, with later deposition in brackish-to-marine water environments. The ore-bearing strata indicate a reducing environment, whereas the nonore-bearing strata indicate a weakly oxidizing environment. With reference to previous studies, the sedimentary material primarily originated from the medium-acidic intrusive rocks exposed in the northern portion of the basin, including the Daqing-Wula Mountains, the Yin Mountains, and middle-acidic intrusions along the eastern margin of the Alxa region in the western part of the basin. The uranium-rich granitic pluton of the source area contributed to the preenrichment of uranium in the target sandstone layer. Under oxidizing aqueous conditions, U 6+ migration was activated, whereas under reducing aqueous conditions, U 6+ was reduced to U 4+ , resulting in eventual sedimentation of coffinite as ore.

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“…In recent years, various exceptional remarkable achievements have been made in recognising the geotectonic background throughout the formation of rocks, the provenance of the basin and the tectonic background of the provenance area, providing a new perspective for understanding the evolution of the basin and its source area [1][2][3][4][5][6][7][8]. Detrital mineralogy and geochemical characteristics of siliciclastic sediments will effectively reveal the provenance area, tectonic settings, transportation, paleoweathering conditions of the source area, and also establish a basis for understanding paleoclimate and diagenesis [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Provenance and Tectonic Setting of Lower Cretaceous Huanhe Formation Sandstones, Northwest Ordos Basin, North-Central China

Luo

Yuqi

et al. 2021

Minerals

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In adjustment to fulfill the requirements of the investigation regarding the lower Cretaceous sandstone uranium deposit in the Naogaodai area within the northwest of Ordos Basin, twenty-seven sandstone samples obtained from the Lower Cretaceous Huanhe Formation were analyzed for major, trace and rare earth elements (REE). The source of clastic and tectonic background was additionally analyzed. The results show that Huanhe sandstone is feldspar rich sandstone, and also the mineral composition is principally quartz, albite and plagioclase; the ratio of light to heavy rare earth elements (LREE/HREE) is 9.25–10.83, with an average value of 10.00; (La/Yb)CN is 10.20–12.53, with an average value of 11.24, demonstrating that LREE is enriched and fractionated compared with HREE. REE distribution patterns are similar, which additionally reveals that Huanhe sandstone has a homogenous source; the Index of Compositional Variability (ICV) value is 1.17–1.73, with an average value of 1.35, both greater than 1, showing an immature property, which may be first-order cycle deposition. The average value of the Chemical Index of Alteration (CIA) is 50.29, suggesting that the source rock has encountered weak chemical weathering; sandstones are near-source first-cycle provenance, which is not significantly influenced by sedimentary sorting and recycling. The geochemical qualities further indicate that Huanhe sandstone was deposited in a passive margin and experienced moderate weathering.

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Geochemical study of the Neoproterozoic clastic sedimentary rocks of the Khambal Formation (Sindreth Basin), Aravalli Craton, NW Indian Shield: Implications for paleoweathering, provenance, and geodynamic evolution

Cited by 10 publications

References 65 publications

Multiproxy analysis constraining climatic control over the Cenozoic depositional history of Kachchh, Western India

Multiproxy analysis constraining climatic control over the Cenozoic depositional history of Kachchh, Western India

Provenance and Tectonic Setting of the Lower Cretaceous Huanhe Formation in the Northwestern Ordos Basin and Its Implications for Uranium Mineralization

Provenance and Tectonic Setting of Lower Cretaceous Huanhe Formation Sandstones, Northwest Ordos Basin, North-Central China

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