Articles | Volume 10, issue 3
Solid Earth, 10, 907–930, 2019

Special issue: Exploring new frontiers in fluids processes in subduction...

Solid Earth, 10, 907–930, 2019

Research article 24 Jun 2019

Research article | 24 Jun 2019

Fluid–rock interactions in the shallow Mariana forearc: carbon cycling and redox conditions

Elmar Albers et al.


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Elmar Albers on behalf of the Authors (19 May 2019)  Author's response    Manuscript
ED: Publish as is (24 May 2019) by Simone Tumiati
ED: Publish as is (24 May 2019) by Federico Rossetti(Executive Editor)
Short summary
To understand the fate of carbon in subducted oceanic sediments and crust, we studied carbonate phases in rocks from the Mariana subduction zone. These show that carbon is liberated from the downgoing plate at depths less than 20 km. Some of the carbon is subsequently trapped in minerals and likely subducts to greater depths, whereas fluids carry the other part back into the ocean. Our findings imply that shallow subduction zone processes may play an important role in the deep carbon cycle.