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Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life

Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life
Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life
The 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.
Evolution of life, Exhumed microbes, Mariana trench, Serpentinite mud volcanism, Subducted cretaceous seamounts
1364-503X
1-28
Fryer, Patricia
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Kurz, Walter
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Shervais, John
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Albers, Elmar
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Bekins, Barbara
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Debret, Baptiste
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Dong, Yanhui
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Eickenbusch, Philip
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Frery, Emanuelle
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Kevorkian, Richard
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Mantovanelli, Simone
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Michibayashi, Katsuyoshi
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Moyer, Craig
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Sissmann, Olivier
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Ichiyama, Yuji
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Kevorkian, Richard
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Magalhaes, Vitor
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Zhang, Rui
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Amon, Diva
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Glickson, Deborah
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Fryer, 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 (2020) Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378 (2165), 1-28, [20180425]. (doi:10.1098/rsta.2018.0425).

Record type: Article

Abstract

The 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.

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Accepted/In Press date: 18 November 2019
e-pub ahead of print date: 6 January 2020
Published date: February 2020
Keywords: Evolution of life, Exhumed microbes, Mariana trench, Serpentinite mud volcanism, Subducted cretaceous seamounts

Identifiers

Local EPrints ID: 437896
URI: http://eprints.soton.ac.uk/id/eprint/437896
ISSN: 1364-503X
PURE UUID: 2993d2c7-0331-4624-b089-95b9317ae514

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Date deposited: 21 Feb 2020 17:31
Last modified: 21 Nov 2021 19:52

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Contributors

Author: Patricia Fryer
Author: C. Geoffrey Wheat
Author: Trevor Williams
Author: Christopher Kelley
Author: Kevin Johnson
Author: Jeffrey Ryan
Author: Walter Kurz
Author: John Shervais
Author: Elmar Albers
Author: Barbara Bekins
Author: Baptiste Debret
Author: Jianghong Deng
Author: Yanhui Dong
Author: Philip Eickenbusch
Author: Emanuelle Frery
Author: Yuji Ichiyama
Author: Raymond Johnston
Author: Richard Kevorkian
Author: Vitor Magalhaes
Author: Simone Mantovanelli
Author: Walter Menapace
Author: Catriona Menzies
Author: Katsuyoshi Michibayashi
Author: Craig Moyer
Author: Kelli Mullane
Author: Jung-woo Park
Author: Roy Price
Author: Olivier Sissmann
Author: Shino Suzuki
Author: Ken Takai
Author: Bastien Walter
Author: Rui Zhang
Author: Diva Amon
Author: Deborah Glickson
Author: Shirley Pomponi

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