Petrography and geochemistry of Silurian Niur sandstones, Derenjal Mountains, East Central Iran: implications for tectonic setting, provenance and weathering

Nowrouzi, Zohreh; Moussavi‐Harami, Reza; Mahboubi, Asadollah; Gharaie, Mohamad Hosein Mahmudy; Ghaemi, Farid

doi:10.1007/s12517-013-0912-7

Cited by 21 publications

(15 citation statements)

References 53 publications

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“…Furthermore, some non-migratory elements, such as La and Th (indicative of felsic sources) and Sc (representative of mafic sources) exhibit different chemical properties in felsic and mafic source rocks, so their ratios (e.g., La/Sc, La/Co, Th/Sc, Th/Co, and Cr/Th) are of value parameters to obtain information about source and composition of the fine-grained rocks [54,55] and are unaffected by the processes of sedimentation [32]. Numerous researchers (e.g., [47,56]) have used these indicators to distinguish between felsic and mafic source rocks.…”

Section: Provenancementioning

confidence: 99%

Elemental Geochemical Evidence for Depositional Conditions and Organic Matter Enrichment of Black Rock Series Strata in an Inter-Platform Basin: The Lower Carboniferous Datang Formation, Southern Guizhou, Southwest China

et al. 2018

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The Datang Formation black rock series deposited in an inter-platform basin are considered to be one of the main source rocks in Southwest China. However, their depositional conditions and organic matter enrichment in such a setting are not well understood. In this study, geochemical characteristics of total organic carbon (TOC), major, trace and rare earth elements (REEs) of thirty black rock series samples from a newly-cut roadside outcrop (Zhenning section) in Southern Guizhou, Southwest China are systematically investigated to examine provenance, paleoredox conditions, paleoclimate, paleoproductivity and sedimentary rate, and further to explore their influence on organic matter enrichment. Results show that TOC contents of the investigated samples range from 0.90% to 2.83%, with an average of 1.45%, with TOC variations being in accord with the stratigraphic cyclicity. These data also indicate that the target black rock series were deposited in a combination of continental island arc and active continental margin tectonic setting that exhibited moderate weathering, oxic/dysoxic oxygen levels, hot and arid to semiarid climate, and a higher sedimentary rate. Multiple paleoredox indicators (e.g., Ni/Co, V/Cr, U/Th and V/(V + Ni) ratios), together with slightly negative Ce anomalies and EF U -EF Mo covariation, totally suggest an oxic/dysoxic water environment, which is usually considered unfavorable for organic matter preservation. Average (La/Yb) N ratios (1.41) reflect a higher sedimentary rate, resulting in shortening the exposure time of organic matter in the degradation region of aerobic bacteria under oxic/dysoxic conditions. Of the three factors that could affect organic matter enrichment, including paleoproductivity, paleoredox conditions and sedimentary rate, the relatively high paleoproductivity indicated by the relatively high TOC contents appears to be the dominant factor. In contrast, the other two factors, i.e., paleoredox conditions and the rate of sedimentation play relatively less significant roles. Based on these factors, an enrichment model of organic matter for the black rock series in Southern Guizhou Depression is established. These findings also contribute to constraining the sedimentary environment in such a setting and further deepen our understanding of the potential shale gas resources of the Southern Guizhou Province.

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Section: Provenancementioning

confidence: 99%

Elemental Geochemical Evidence for Depositional Conditions and Organic Matter Enrichment of Black Rock Series Strata in an Inter-Platform Basin: The Lower Carboniferous Datang Formation, Southern Guizhou, Southwest China

et al. 2018

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“…The tectonic discrimination diagrams proposed by Bhatia (1983) and Korsch (1986, 1988) have mostly been used to identify the tectonic setting of unknown basins (Jafarzadeh et al, 2013;Nowrouzi et al, 2013).…”

Section: Tectonic Settingmentioning

confidence: 99%

Petrography and geochemistry of Pharaonic sandstone monuments in Tall San Al Hagr, Al Sharqiya Governorate, Egypt: implications for provenance and tectonic setting

Zaid¹,

Badry²,

Ramadan³

et al. 2015

Turkish J Earth Sci

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“…The Hawkesbury Sandstone meets all of these parameters ( The tectonic discrimination diagrams proposed by Bhatia (1983) and Korsch (1986, 1988) have mostly been used to identify the tectonic setting of unknown basins (Jafarzadeh et al, 2013;Nowrouzi et al, 2013). Armstrong-Altrin and Verma (2005) evaluated these major-element-based discrimination diagrams using Miocene to Recent sediments and showed a low percentage success rate (0%-23%) for the Bhatia (1983) diagram and success of 31.5%-52.3% for the diagram of Korsch (1986, 1988).…”

Section: Caomentioning

confidence: 99%

Provenance, diagenesis, tectonic setting and geochemistry of Hawkesbury Sandstone (Middle Triassic), southern Sydney Basin, Australia

Gahtani¹

2017

J Geol Geophys

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Petrography and geochemistry of Silurian Niur sandstones, Derenjal Mountains, East Central Iran: implications for tectonic setting, provenance and weathering

Cited by 21 publications

References 53 publications

Elemental Geochemical Evidence for Depositional Conditions and Organic Matter Enrichment of Black Rock Series Strata in an Inter-Platform Basin: The Lower Carboniferous Datang Formation, Southern Guizhou, Southwest China

Elemental Geochemical Evidence for Depositional Conditions and Organic Matter Enrichment of Black Rock Series Strata in an Inter-Platform Basin: The Lower Carboniferous Datang Formation, Southern Guizhou, Southwest China

Petrography and geochemistry of Pharaonic sandstone monuments in Tall San Al Hagr, Al Sharqiya Governorate, Egypt: implications for provenance and tectonic setting

Provenance, diagenesis, tectonic setting and geochemistry of Hawkesbury Sandstone (Middle Triassic), southern Sydney Basin, Australia

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