Earthquake-enhanced dissolved carbon cycles in ultra-deep ocean sediments
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Published:2023-09-11
Issue:1
Volume:14
Page:
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ISSN:2041-1723
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Container-title:Nature Communications
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language:en
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Short-container-title:Nat Commun
Author:
Chu MengfanORCID, Bao RuiORCID, Strasser MichaelORCID, Ikehara KenORCID, Everest JezORCID, Maeda Lena, Hochmuth KatharinaORCID, Xu LiORCID, McNichol Ann, Bellanova PieroORCID, Rasbury TroyORCID, Kölling MartinORCID, Riedinger NataschaORCID, Johnson JoelORCID, Luo MinORCID, März Christian, Straub SusanneORCID, Jitsuno Kana, Brunet Morgane, Cai Zhirong, Cattaneo AntonioORCID, Hsiung Kanhsi, Ishizawa Takashi, Itaki Takuya, Kanamatsu Toshiya, Keep MyraORCID, Kioka ArataORCID, McHugh Cecilia, Micallef Aaron, Pandey DhananjaiORCID, Proust Jean Noël, Satoguchi YasufumiORCID, Sawyer DerekORCID, Seibert Chloé, Silver MaxwellORCID, Virtasalo JoonasORCID, Wang Yonghong, Wu Ting-WeiORCID, Zellers SarahORCID
Abstract
AbstractHadal trenches are unique geological and ecological systems located along subduction zones. Earthquake-triggered turbidites act as efficient transport pathways of organic carbon (OC), yet remineralization and transformation of OC in these systems are not comprehensively understood. Here we measure concentrations and stable- and radiocarbon isotope signatures of dissolved organic and inorganic carbon (DOC, DIC) in the subsurface sediment interstitial water along the Japan Trench axis collected during the IODP Expedition 386. We find accumulation and aging of DOC and DIC in the subsurface sediments, which we interpret as enhanced production of labile dissolved carbon owing to earthquake-triggered turbidites, which supports intensive microbial methanogenesis in the trench sediments. The residual dissolved carbon accumulates in deep subsurface sediments and may continue to fuel the deep biosphere. Tectonic events can therefore enhance carbon accumulation and stimulate carbon transformation in plate convergent trench systems, which may accelerate carbon export into the subduction zones.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary
Reference63 articles.
1. Plank, T. & Manning, C. E. Subducting carbon. Nature 574, 343–352 (2019). 2. Bao, R. et al. Tectonically-triggered sediment and carbon export to the Hadal zone. Nat. Commun. 9, 121 (2018). 3. McHugh, C. M. et al. Remobilization of surficial slope sediment triggered by the A.D. 2011 Mw 9 Tohoku-Oki earthquake and tsunami along the Japan Trench. Geology 44, 391–394 (2016). 4. Ikehara, K. et al. Documenting large earthquakes similar to the 2011 Tohoku-oki earthquake from sediments deposited in the Japan Trench over the past 1500 years. Earth Planet. Sci. Lett. 445, 48–56 (2016). 5. Schwestermann, T. et al. Multivariate statistical and multiproxy constraints on earthquake‐triggered sediment remobilization processes in the central Japan Trench. Geochem., Geophys. Geosystems 21, 1–24 (2020).
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