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  Carbon released by sill intrusion into young sediments measured through scientific drilling

Lizarralde, D., Teske, A., Höfig, T. W., González-Fernández, A., Aiello, I. W., Ash, J. L., Bojanova, D. P., Buatier, M. D., Edgcomb, V. P., Galerne, C. Y., Gontharet, S., Heuer, V. B., Jiang, S., Kars, M. A. C., Khogenkumar Singh, S., Kim, J.-H., Koornneef, L. M. T., Marsaglia, K. M., Meyer, N. R., Morono, Y., Negrete-Aranda, R., Neumann, F., Pastor, L. C., Peña-Salinas, M. E., Pérez Cruz, L. L., Ran, L., Riboulleau, A., Sarao, J. A., Schubert, F., Stock, J. M., Toffin, L. M. A. A., Xie, W., Yamanaka, T., Zhuang, G. (2023 online): Carbon released by sill intrusion into young sediments measured through scientific drilling. - Geology.
https://doi.org/10.1130/G50665.1

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Lizarralde, Daniel1, Autor
Teske, Andreas1, Autor
Höfig, Tobias W.1, Autor
González-Fernández, Antonio1, Autor
Aiello, I. W.1, Autor
Ash, J. L.1, Autor
Bojanova, D. P.1, Autor
Buatier, M. D.1, Autor
Edgcomb, V. P.1, Autor
Galerne, C. Y.1, Autor
Gontharet, S.1, Autor
Heuer, V. B.1, Autor
Jiang, S.1, Autor
Kars, M. A. C.1, Autor
Khogenkumar Singh, S.1, Autor
Kim, J.-H.1, Autor
Koornneef, L. M. T.1, Autor
Marsaglia, K. M.1, Autor
Meyer, N. R.1, Autor
Morono, Y.1, Autor
Negrete-Aranda, R.1, AutorNeumann, F.1, AutorPastor, L. C.1, AutorPeña-Salinas, M. E.1, AutorPérez Cruz, L. L.1, AutorRan, L.1, AutorRiboulleau, A.1, AutorSarao, J. A.1, AutorSchubert, Florian2, Autor              Stock, J. M.1, AutorToffin, L. M. A. A.1, AutorXie, W.1, AutorYamanaka, T.1, AutorZhuang, G.1, Autor mehr..
Affiliations:
1External Organizations, ou_persistent22              
23.7 Geomicrobiology, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146043              

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 Zusammenfassung: The intrusion of igneous sills into organic-rich sediments accompanies the emplacement of igneous provinces, continental rifting, and sedimented seafloor spreading. Heat from intruding sills in these settings alters sedimentary organic carbon, releasing methane and other gasses. Recent studies hypothesize that carbon released by this mechanism impacts global climate, particularly during large igneous province emplacements. However, the direct impacts of sill intrusion, including carbon release, remain insufficiently quantified. Here, we present results from International Ocean Discovery Program (IODP) Expedition 385 comparing drill-core and wireline measurements from correlative sedimentary strata at adjacent sites cored in Guaymas Basin, Gulf of California, one altered by a recently intruded sill and one unaffected. We estimate 3.30 Mt of carbon were released due to this sill intrusion, representing an order of magnitude less carbon than inferences from outcrops and modeling would predict. This attenuated carbon release can be attributed to shallow intrusion and the high heat capacity of young, high-porosity sediments. Shallow intrusion also impacts sub-seafloor carbon cycling by disrupting advective fluxes, and it compacts underlying sediments, increasing potential carbon release in response to subsequent intrusions.

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Sprache(n): eng - Englisch
 Datum: 2023-02-09
 Publikationsstatus: Online veröffentlicht
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1130/G50665.1
GFZPOF: p4 T8 Georesources
OATYPE: Hybrid Open Access
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Projektname : Erforschung von mikrobieller Sulfatreduktion unter hoher Temperatur und hohem Druck
Grant ID : 651694
Förderprogramm : Bereich Infrastruktur-International Ocean Discovery Program (IODP) (SPP 527)
Förderorganisation : Deutsche Forschungsgemeinschaft (DFG)

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Titel: Geology
Genre der Quelle: Zeitschrift, SCI, Scopus
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Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: - Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals174
Publisher: Geological Society of America (GSA)