Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life
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Subject TermsMariana trench
subducted cretaceous seamounts
serpentinite mud volcanism
evolution of life
MetadataShow full item record
AbstractThe subduction of seamounts and ridge features at convergent plate boundaries plays an important role in the deformation of the overriding plate and influences geochemical cycling and associated biological processes. Active serpentinization of forearc mantle and serpentinite mud volcanism on the Mariana forearc (between the trench and active volcanic arc) provides windows on subduction processes. Here, we present (1) the first observation of an extensive exposure of an undeformed Cretaceous seamount currently being subducted at the Mariana Trench inner slope; (2) vertical deformation of the forearc region related to subduction of Pacific Plate seamounts and thickened crust; (3) recovered Ocean Drilling Program and International Ocean Discovery Program cores of serpentinite mudflows that confirm exhumation of various Pacific Plate lithologies, including subducted reef limestone; (4) petrologic, geochemical and paleontological data from the cores that show that Pacific Plate seamount exhumation covers greater spatial and temporal extents; (5) the inference that microbial communities associated with serpentinite mud volcanism may also be exhumed from the subducted plate seafloor and/or seamounts; and (6) the implications for effects of these processes with regard to evolution of life.
CitationFryer Patricia, Wheat C. Geoffrey, Williams Trevor, Kelley Christopher, Johnson Kevin, Ryan Jeffrey, Kurz Walter, Shervais John, Albers Elmar, Bekins Barbara, Debret Baptiste, Deng Jianghong, Dong Yanhui, Eickenbusch Philip, Frery Emanuelle, Ichiyama Yuji, Johnston Raymond, Kevorkian Richard, Magalhaes Vitor, Mantovanelli Simone, Menapace Walter, Menzies Catriona, Michibayashi Katsuyoshi, Moyer Craig, Mullane Kelli, Park Jung-Woo, Price Roy, Sissmann Olivier, Suzuki Shino, Takai Ken, Walter Bastien, Zhang Rui, Amon Diva, Glickson Deborah and Pomponi Shirley 2020Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of lifePhil. Trans. R. Soc. A. 378: 20180425
PublisherThe Royal Society
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Item DescriptionCopyright 2020 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/ by/4.0/, which permits unrestricted use, provided the original author and source are credited.