Deep submarine infiltration of altered geothermal groundwater on the south Chilean Margin
Deep submarine infiltration of altered geothermal groundwater on the south Chilean Margin
复制标题
智利南缘改变的地热地下水深部海底渗透
DOI:
10.1038/s43247-022-00541-3
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发表时间:
2022
影响因子:
7.9
通讯作者:
Aiello, Ivano W.
中科院分区:
文献类型:
--
作者:
Clementi, Vincent J.;Rosenthal, Yair;Bova, Samantha C.;Thomas, Elizabeth K.;Wright, James D.;Mortlock, Richard A.;Cowling, Owen C.;Godfrey, Linda V.;Childress, Laurel B.;Aiello, Ivano W.
Submarine groundwater discharge is increasingly recognized as an important component of the oceanic geochemical budget, but knowledge of the distribution of this phenomenon is limited. To date, reports of meteoric inputs to marine sediments are typically limited to shallow shelf and coastal environments, whereas contributions of freshwater along deeper sections of tectonically active margins have generally been attributed to silicate diagenesis, mineral dehydration, or methane hydrate dissociation. Here, using geochemical fingerprinting of pore water data from Site J1003 recovered from the Chilean Margin during D/VJOIDES ResolutionExpedition 379 T, we show that substantial offshore freshening reflects deep and focused contributions of meteorically modified geothermal groundwater, which is likely sourced from a reservoir ~2.8 km deep in the Aysén region of Patagonia and infiltrated marine sediments during or shortly after the last glacial period. Emplacement of fossil groundwaters reflects an apparently ubiquitous phenomenon in margin sediments globally, but our results now identify an unappreciated locus of deep submarine groundwater discharge along active margins with potential implications for coastal biogeochemical processes and tectonic instability.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
H. Tomaru;M. Torres;R. Matsumoto;W. Borowski
通讯作者:
W. Borowski
影响因子:
4.2
作者:
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通讯作者:
R. C. Nuñez
影响因子:
16.6
作者:
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通讯作者:
Paytan A
DOI:
--
发表时间:
2004
期刊:
Earth Planet. Sci. Lett. 228
影响因子:
--
作者:
Toki;T. et al.
通讯作者:
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DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
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通讯作者:
D. Morata