Protracted carbon burial following the Early Jurassic Toarcian Oceanic Anoxic Event (Posidonia Shale, Lower Saxony Basin, Germany)

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dc.citation.firstpage2023en_US
dc.citation.issueNumber8en_US
dc.citation.journalTitleInternational Journal of Earth Sciencesen_US
dc.citation.lastpage2041en_US
dc.citation.volumeNumber113en_US
dc.contributor.authorCelestino, R. F. S.en_US
dc.contributor.authorRuhl, M.en_US
dc.contributor.authorDickson, A. J.en_US
dc.contributor.authorIdiz, E.en_US
dc.contributor.authorJenkyns, H. C.en_US
dc.contributor.authorLeng, M. J.en_US
dc.contributor.authorMattioli, E.en_US
dc.contributor.authorMinisini, D.en_US
dc.contributor.authorHesselbo, S. P.en_US
dc.date.accessioned2025-01-09T20:17:03Zen_US
dc.date.available2025-01-09T20:17:03Zen_US
dc.date.issued2024en_US
dc.description.abstractLower Jurassic marine basins across the northwest European epicontinental shelf were commonly marked by deposition of organic-rich black shales. Organic-carbon burial was particularly widespread during the Toarcian Oceanic Anoxic Event (T-OAE: also known as the Jenkyns Event) with its accompanying negative carbon-isotope excursion (nCIE). Lower Toarcian black shales in central and southern Germany are known as the Posidonia Shale Formation (Posidonienschiefer) and are thought to have formed during the T-OAE nCIE. Here, we present stratigraphic (carbon-isotope, Rock–Eval, calcareous nannofossil) data from the upper Pliensbachian and lower Toarcian strata from a core drilled on the northern flank of the Lower Saxony Basin, north–west Germany. The bio- and chemostratigraphic framework presented demonstrates that (i) the rock record of the T-OAE at the studied locality registered highly condensed sedimentation and/or multiple hiatuses and (ii) the deposition of organic-rich black shale extended significantly beyond the level of the T-OAE, thereby contrasting with well-studied sections of the Posidonia Shale in southern Germany but showing similarities with geographically nearby basins such as the Paris Basin (France). Prolonged and enhanced organic-carbon burial represents a negative feedback mechanism in the Earth system, with locally continued environmental perturbance accelerating the recovery of the global climate from T-OAE-associated hyperthermal conditions, whilst also accelerating a return to more positive δ13C values in global exogenic carbon pools.en_US
dc.identifier.citationCelestino, R. F. S., Ruhl, M., Dickson, A. J., Idiz, E., Jenkyns, H. C., Leng, M. J., Mattioli, E., Minisini, D., & Hesselbo, S. P. (2024). Protracted carbon burial following the Early Jurassic Toarcian Oceanic Anoxic Event (Posidonia Shale, Lower Saxony Basin, Germany). International Journal of Earth Sciences, 113(8), 2023–2041. https://doi.org/10.1007/s00531-024-02477-9en_US
dc.identifier.digitals00531-024-02477-9en_US
dc.identifier.doihttps://doi.org/10.1007/s00531-024-02477-9en_US
dc.identifier.urihttps://hdl.handle.net/1911/118137en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subject.keywordPosidonia Shaleen_US
dc.subject.keywordToarcianen_US
dc.subject.keywordBlack shaleen_US
dc.subject.keywordLower Saxony Basinen_US
dc.titleProtracted carbon burial following the Early Jurassic Toarcian Oceanic Anoxic Event (Posidonia Shale, Lower Saxony Basin, Germany)en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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