C and O isotope stratigraphy in shallow-marine carbonate: a tool for sequence stratigraphy (example from the Lodève region, peritethian domain)

Hamon, Youri; Merzeraud, Gilles

doi:10.1007/s00015-007-1206-4

Cited by 18 publications

(24 citation statements)

References 45 publications

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“…The carbon isotope ratio may change due to re-mineralization of organic carbon ( 13 C depletion) or enhanced photosynthesis ( 13 C enrichment) all of which occur as the water mass ''ages'' (Patterson and Walter 1994;Holmden et al 1998;Immenhauuser et al 2003;Hamon and Merzeraud 2007). These authors linked d 13 C depletion to the input of 12 C from re-mineralized organic carbon during the long residence time of sea water on the platform.…”

Section: Evaluation Post-depositional Alterations Of the Isotopic Datamentioning

confidence: 94%

“…During late Pleistocene, shallow platform carbonate can be correlated with the deep sea isotope proxy of sea-level change (Vahernkamp 1996;Kievman 1998). Hamon and Merzeraud (2007) investigated C and O isotope stratigraphy in shallow-marine carbonate in the section of Permian to Dogger of the Lodeve region South-East of France. Colombié et al (2011) have studied carbon and oxygen isotope records of paleo-environmental and carbonate production changes in shallow marine carbonates (Kimmeridgain, Swiss Jura).…”

Section: Evaluation Post-depositional Alterations Of the Isotopic Datamentioning

confidence: 99%

“…Three points are evaluated and discussed here as done by previous authors (e.g. Hamon and Merzeraud 2007;Kavoosi 2014). The most important effects are facies texture, secondary dolomitization and burial-related diagenetic alterations.…”

Section: Evaluation Post-depositional Alterations Of the Isotopic Datamentioning

confidence: 99%

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Chemo-stratigraphy as a tool for sequence stratigraphy of the Early Triassic Kangan Formation, North of the Persian Gulf

Peyravi

Rahimpour‐Bonab

Nader

et al. 2015

Carbonates Evaporites

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The Lower Triassic Kangan Formation, which is equivalent to the Upper Khuff, is the main reservoir for natural gas in SW Iran and the northern Persian Gulf. Investigations of this formation in Salman Field indicate that it is composed of 14 facies deposited in tidal flat, lagoon and oolitic barrier settings in the inner part of a carbonate ramp. Vertical variations of microfacies and gamma-ray log profiles show that this formation consists of three depositional sequences (KG3-KG1), each including of transgressive and high stand systems tract and each bounded above and below by type-two unconformities. Carbon and oxygen stable isotope profiles from a welldated carbonate section were compared with the sedimentological data and results from the sequence stratigraphic study of the Kangan Formation, showing negative and positive peaks coinciding with sequence boundaries and maximum flooding surfaces Boundaries and Maximum Flooding Surfaces, respectively.

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Section: Evaluation Post-depositional Alterations Of the Isotopic Datamentioning

confidence: 94%

Section: Evaluation Post-depositional Alterations Of the Isotopic Datamentioning

confidence: 99%

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Chemo-stratigraphy as a tool for sequence stratigraphy of the Early Triassic Kangan Formation, North of the Persian Gulf

Peyravi

Rahimpour‐Bonab

Nader

et al. 2015

Carbonates Evaporites

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“…5). 5), is probably overprinted by 'ageing' of seawater masses with long residence times and/or early meteoritic processes in an episodically restricted epeiric setting (Immenhauser et al 2003;Gomez et al 2007;Hamon & Merzeraud, 2007), exaggerating the final negative trend (see Figs 5, 7). This discrepancy may be explained by the reduced chance of preservation of original isotope composition of carbonates from rhythmic clay-enriched lithofacies (Joachimski et al 2002;Buggisch & Mann, 2004;Buggisch & Joachimski, 2006), and organic carbon isotope proxies are more reliable, especially for deeper-water depositional settings (e.g.…”

Section: Interpretation Of the Isotopic Signalsmentioning

confidence: 98%

“…Palaeogeographical map, global distribution of carbonate build-ups (circles) and oceanic circulation pattern (arrows) during the Lochkovian to early Pragian, showing location of the study area (Podolia), along with previously studied Silurian-Devonian boundary localities in Europe (Czech Republic, Austria), North America and Australia (see summary in Buggisch & Mann, 2004). Wigforss-Lange, 1999;Saltzman, 2001;Panchuk, Holmden & Kump, 2005;Panchuk, Holmden & Leslie, 2006;Gomez et al 2007;Hamon & Merzeraud, 2007). weathered carbon and the oxidation of organic matter (e.g.…”

Section: K Małkowski and Othersmentioning

confidence: 99%

Carbon isotope stratigraphy across the Silurian–Devonian transition in Podolia, Ukraine: evidence for a global biogeochemical perturbation

et al. 2009

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The carbon and oxygen isotope composition of marine carbonates (δ 13 C and δ 18 O, respectively) are studied in the fossiliferous, stratigraphically well-constrained and remarkably expanded successions of Podolia, SW Ukraine, spanning the Silurian-Devonian transition. Significant isotopic shifts are directly comparable to previously published global secular trends in well-preserved brachiopod calcite isotopic ratios from this region, and therefore may be taken as a reliable primary record of seawater δ 13 C changes. The sections reveal a major positive δ 13 C excursion, with an amplitude above 6 ‰, beginning in the upper Pridoli and reaching peak values as heavy as +4.2 ‰ in the lowermost Lochkovian. This turnover in carbon cycling is followed by a general trend toward more negative δ 13 C values in the upper Lochkovian. The Podolian isotopic signals provide strong support for the previously inferred global biogeochemical perturbation across the Silurian-Devonian transition, reflecting a complex combination of palaeogeographical, biogeochemical and evolutionary processes in the late Caledonian geodynamic setting, with a likely undervalued role of the expanding vegetation in vast near-coastal shallows and deltas.

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Coral- and oyster-microbialite patch reefs in the aftermath of the Triassic–Jurassic biotic crisis (Sinemurian, Southeast France)

et al. 2018

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The end of the Triassic and the Early Jurassic are intervals characterised by profound biotic and environmental changes, accompanied by dramatic decreases in marine fauna diversity. Corals were strongly affected and assemblages underwent a severe reduction; compared with those of the Upper Triassic, the Early Jurassic is traditionally defined as holding a ''reef gap''. A Sinemurian coral-microbialites patch reef, located in southern France in the He ´rault department (Le Perthus locality), is here described. This bioconstruction developed in a shallow mixed siliciclastic-carbonate inner ramp setting. The reef volume is composed of up to 70% of an intercoral facies mostly microbialites, with subordinated sediments (approximately 20-30% of the intercoral facies). Therefore, the patch reef can be defined as a coral-microbialite bioconstruction, in which microbialites were the main framebuilders. The coral assemblage has low diversity and is dominated by massive to branching colonies of Chondrocoenia clavellata. This highlights the reef diversity after the T/J boundary crisis. The Le Perthus patch reef could have acted as an edge for the dominant currents and probably induced reductions in hydrodynamic energy and sedimentation on one of its sides. Consequently, it could have triggered the growth of small lateral bioconstructions, composed of oysters and microbialites, uniquely on one of its sides. The evolution of the facies shows that the Le Perthus patch reef grew in a shallowing-upward setting accompanied by an increase in siliciclastic inputs. The rate of bioerosion and the faunal assemblage suggest that the bioconstructions could have been developed in a mesotrophic environment.

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C and O isotope stratigraphy in shallow-marine carbonate: a tool for sequence stratigraphy (example from the Lodève region, peritethian domain)

Cited by 18 publications

References 45 publications

Chemo-stratigraphy as a tool for sequence stratigraphy of the Early Triassic Kangan Formation, North of the Persian Gulf

Chemo-stratigraphy as a tool for sequence stratigraphy of the Early Triassic Kangan Formation, North of the Persian Gulf

Carbon isotope stratigraphy across the Silurian–Devonian transition in Podolia, Ukraine: evidence for a global biogeochemical perturbation

Coral- and oyster-microbialite patch reefs in the aftermath of the Triassic–Jurassic biotic crisis (Sinemurian, Southeast France)

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