Interrelations between intermediate-depth earthquakes and fluid flow within subducting oceanic plates: constraints from eclogite-facies pseudotachylytes

John, Timm and Schenk, Volker (2006) Interrelations between intermediate-depth earthquakes and fluid flow within subducting oceanic plates: constraints from eclogite-facies pseudotachylytes Geology, 34 (7). pp. 557-560. DOI 10.1130/g22411.1.

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Abstract

Field evidence preserved in ancient subducted oceanic crust documents that eclogite facies frictional failure with melting (pseudotachylyte formation during intermediate-depth earthquakes) was accompanied and followed, not preceded, by infiltration of external fluids and progressive vein formation in the eclogites. Eclogitization began during seismic failure and fluid passage through the shear zone. Subsequent fluid flow produced hydraulic fracturing and continuous vein formation during ongoing burial. We suggest that this kind of shear zone may allow channellized fluid flow within and out of slabs.

Document Type:	Article
Research affiliation:	OceanRep > SFB 574 > C1 Kiel University OceanRep > SFB 574
Refereed:	Yes
DOI etc.:	10.1130/g22411.1
ISSN:	0091-7613
Contribution Number:	Project Number SFB 574 89
Expeditions/Models:	Phase C1_Zambia
Date Deposited:	07 Apr 2010 11:41
Last Modified:	29 Jun 2017 09:32
URI:	http://eprints.uni-kiel.de/id/eprint/3222

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