A model for subduction erosion.

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von Huene, Roland, Ranero, Cesar R. and Vannucchi, P. (2004) A model for subduction erosion. Geology, 32 (10). pp. 913-916. DOI 10.1130/G20563.1.

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Abstract

Erosion by high stress abrasion of convergent margins from horsts and grabens on the subducting plate is not shown in seismic images. In a proposed model, the frontal sediment prism is a dynamic mass that elevates pore-fluid pressure. Overpressured fluid invades fractures in the upper plate and separates fragments that are dragged into a subduction channel along the plate interface. Removed fragments are smaller than surface ship seismic techniques have resolved and beyond the reach of past scientific ocean drilling; however, current drill capability and downhole geophysics can test the model.

Document Type: Article
Keywords: continental margins, nonaccretionary, convergent, plate boundary, role of fluids, subduction processes
Research affiliation: OceanRep > SFB 574
OceanRep > SFB 574 > A1
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Refereed: Yes
Open Access Journal?: No
Publisher: GSA, Geological Society of America
Projects: SFB574
Contribution Number:
Project
Number
SFB 574
54
Date Deposited: 06 Feb 2009 14:45
Last Modified: 23 Sep 2019 23:53
URI: https://oceanrep.geomar.de/id/eprint/5390

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