Hydrogen, single-carbon compounds, and thermal regime in the oceanic ultramafic-dominated lithosphere: insights from a deep borehole on the Atlantis Massif
文献类型：期刊论文
| 作者 | Lang, Susan Q.24,25; Wheat, C. Geoffrey26; Dickerson, Kristin L.27; Reagan, Mark K.2; Savov, Ivan P.23; Robare, Jordyn A.22; Brazelton, William J.21; Suhonen, Johanna; Cavazos, Oscar20; McCaig, Andrew23 |
| 刊名 | GEOCHIMICA ET COSMOCHIMICA ACTA
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 408页码:84-104 |
| 关键词 | Serpentinization Hydrogen Methane Abiotic organic carbon Organic acids Ocean worlds Prebiotic precursors Formation waters International Ocean Discovery Program Expedition 399 Site 1601 |
| ISSN号 | 0016-7037 |
| DOI | 10.1016/j.gca.2025.09.024 |
| 通讯作者 | Lang, Susan Q.(sqlang@whoi.edu) |
| 英文摘要 | Water that flows through permeable ultramafic rocks produces high abundances of molecular hydrogen (H-2), methane (CH4), and other small organic molecules. Such products can fuel life in the rocky subseafloor, be extracted for energy, and may have played a role in pre-biological chemical synthesis on early Earth or other planetary bodies. The International Ocean Discovery Program drilled a new 1268-m-deep borehole (U1601C) into serpentinized mantle with minor gabbroic rocks on the Atlantis Massif, similar to 800-m north of the Lost City hydrothermal field (30 degrees N, Mid-Atlantic Ridge). Measured temperatures of the disturbed borehole reached 91.3 degrees C, and equilibrated temperatures of the deepest section are estimated to be between 110 - 140 degrees C. Water collected every similar to 5-m during drilling operations had H-2 concentrations that were regularly > 200 nM and spiked to > 10 mu M at multiple depths. In these waters, carbon monoxide was only present in deeper, hotter sections, and potentially associated with gabbroic intrusions into the peridotite host. Open borehole fluids were sampled after drilling and samples recovered from the deepest portion contained elevated short-lived 222-Radon and strontium isotope ratios similar to Lost City fluids, pointing to the presence of in situ subseafloor formation waters that have equilibrated with the host rock. The deepest samples were actively degassing upon recovery and contained 740 +/- 360 mu M H-2, 340 +/- 36 mu M CH4, and 25.5 mu M & sum;formate (= formate and formic acid). The shallowest fluids from the open borehole also contain micromolar H-2 and & sum;formate concentrations, the presence of which cannot be attributed to the upward migration of the deeper, higher concentration fluids. We interpret these data as reflecting two distinct and interconnected regimes of fluid flow and composition. Deep waters that are channelized along faults, lithologic contacts, and other high permeability pathways host high H-2 and CH4 concentrations plus micromolar & sum;formate that closely mirror the chemistry and isotopic signatures of LCHF vent fluids. Pervasive fluid flow permeates the mesh texture and microfracture network of the serpentinized peridotite and sustains H-2 and & sum;formate even in the shallowest subseafloor intervals at mild temperatures. These findings demonstrate that both focused and pervasive fluid flow contribute to the transport, and potentially the generation, of reduced volatiles and C1 compounds within the Atlantis Massif. |
| WOS关键词 | MOLAL THERMODYNAMIC PROPERTIES ; ABIOTIC ORGANIC-SYNTHESIS ; CITY HYDROTHERMAL FIELD ; COMPOSITIONAL CONTROLS ; FORMATION TEMPERATURES ; STABLE-ISOTOPE ; REACTION-RATES ; FORMIC-ACID ; VENT FLUIDS ; SERPENTINIZATION |
| 资助项目 | US National Science Foundation (NSF)[1326927] ; NSF for the US Science Support Program Office associated[1450528] ; International Ocean Discovery Program [USSSP-IODP][22O(GG009393-04)] ; UK Natural Environment Research Council[NE/X019098/1] ; UK Natural Environment Research Council[NE/Y001737/1] ; UK Natural Environment Research Council[NE/Y002350/1] ; UK Natural Environment Research Council[NE/Z000424/1] ; UK Natural Environment Research Council[NE/Y002415/1] ; Juan de la Cierva fellowship - Spanish Ministerio de Ciencia e Innovacion[FJC2021-047190-I] ; Agencia Estatal de Investigacion (MCIN/AEI) ; IODP France ; ANR Institut National des Sciences de l'Univers-CNRS[ANR-22-EXOR-0001] ; National Natural Science Foundation of China[42373003] ; National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Government of India[23K03528] ; National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Government of India[20H02005] ; Japan Society for the Promotion of Science ; USSSP-IODP subcontract 22O ; Australia New Zealand International Consortium (ANZIC) IODP ; IODP-China Office and Natural Science Foundation of China[92251303] ; IODP Germany ; J-DESC (Japan Drilling Earth Science Consortium) ; [GG009393-04] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001590143800001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203521]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Lang, Susan Q. |
| 作者单位 | 1.Univ Wyoming, Depart Geol & Geophys, Laramie, WY USA 2.Univ Iowa, Dept Earth & Environm Sci, Iowa City, IA USA 3.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China 4.Shanghai Jiao Tong Univ, Key Lab Polar Ecosyst & Climate Change, Minist Educ, Shanghai 200030, Peoples R China 5.Univ Queensland, Sustainable Minerals Inst, St Lucia, Qld, Australia 6.Univ Queensland, Sch Environm, St Lucia, Qld, Australia 7.Cent Univ Punjab, Dept Geol, Bathinda, India 8.Univ Plymouth, Sch Geog Earth & Environm Sci, Plymouth, England 9.Okayama Univ, Dept Earth Sci, Okayama, Japan 10.Stanford Univ, Dept Geophys, Stanford, CA USA |
| 推荐引用方式 GB/T 7714 | Lang, Susan Q.,Wheat, C. Geoffrey,Dickerson, Kristin L.,et al. Hydrogen, single-carbon compounds, and thermal regime in the oceanic ultramafic-dominated lithosphere: insights from a deep borehole on the Atlantis Massif[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2025,408:84-104. |
| APA | Lang, Susan Q..,Wheat, C. Geoffrey.,Dickerson, Kristin L..,Reagan, Mark K..,Savov, Ivan P..,...&Wang, Fengping.(2025).Hydrogen, single-carbon compounds, and thermal regime in the oceanic ultramafic-dominated lithosphere: insights from a deep borehole on the Atlantis Massif.GEOCHIMICA ET COSMOCHIMICA ACTA,408,84-104. |
| MLA | Lang, Susan Q.,et al."Hydrogen, single-carbon compounds, and thermal regime in the oceanic ultramafic-dominated lithosphere: insights from a deep borehole on the Atlantis Massif".GEOCHIMICA ET COSMOCHIMICA ACTA 408(2025):84-104. |
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来源：海洋研究所
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