Seawater cycled throughout Earth’s mantle in partially serpentinized lithosphere.

Kendrick, M. A., Hémond, C., Kamenetsky, V. S., Danyushevsky, L., Devey, Colin W. , Rodemann, T., Jackson, M. G. and Perfit, M. R. (2017) Seawater cycled throughout Earth’s mantle in partially serpentinized lithosphere. Nature Geoscience, 10 (3). pp. 222-228. DOI 10.1038/ngeo2902.

[img] Text
ngeo2902-s1.pdf - Supplemental Material
Restricted to Registered users only

Download (2744Kb) | Contact
[img] Other (Excel File)
Suppl. ngeo2902-s2.xlsx - Supplemental Material
Restricted to Registered users only

Download (391Kb) | Contact
[img] Text
Kendrick.pdf - Published Version
Restricted to Registered users only

Download (505Kb) | Contact

Supplementary data:

Abstract

The extent to which water and halogens in Earth’s mantle have primordial origins, or are dominated by seawater-derived components introduced by subduction is debated. About 90% of non-radiogenic xenon in the Earth’s mantle has a subducted atmospheric origin, but the degree to which atmospheric gases and other seawater components are coupled during subduction is unclear. Here we present the concentrations of water and halogens in samples of magmatic glasses collected from mid-ocean ridges and ocean islands globally. We show that water and halogen enrichment is unexpectedly associated with trace element signatures characteristic of dehydrated oceanic crust, and that the most incompatible halogens have relatively uniform abundance ratios that are different from primitive mantle values. Taken together, these results imply that Earth’s mantle is highly processed and that most of its water and halogens were introduced by the subduction of serpentinized lithospheric mantle associated with dehydrated oceanic crust.

Document Type: Article
Additional Information: WOS:000395791400016
Keywords: Mid-ocean ridge, ocean island, geochemitry, halogens, water, recycling, mantle
Research affiliation: Kiel University
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1038/ngeo2902
ISSN: 1752-0894
Projects: Future Ocean
Date Deposited: 01 Mar 2017 08:59
Last Modified: 24 Sep 2019 00:05
URI: http://oceanrep.geomar.de/id/eprint/36729

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...