Channelized melt flow in downwelling mantle: Implications for 226Ra-210Pb disequilibria in arc magmas

Nick Petford; M A Koenders; S Turner

doi:10.1029/2007JB005563

Channelized melt flow in downwelling mantle: Implications for 226Ra-210Pb disequilibria in arc magmas

Nick Petford, M A Koenders, S Turner

University of Northampton

Research output: Contribution to Journal › Article

Abstract

We present the results of an analytical model of porous flow of viscous melt into a steadily dilating "channel" (defined as a cluster of smaller veins) in downwelling subarc mantle. The model predicts the pressure drop in the mantle wedge matrix surrounding the channel needed to drive melt flow as a function of position and time.

Original language	English
Journal	Journal of Geophysical Research. Solid Earth
Volume	113
Issue number	B11202
DOIs	https://doi.org/10.1029/2007JB005563
Publication status	Published - 1 Nov 2008

Keywords

mantle
subduction
short-lived isotopes
melt flow
melt segregation

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abstract = "We present the results of an analytical model of porous flow of viscous melt into a steadily dilating {"}channel{"} (defined as a cluster of smaller veins) in downwelling subarc mantle. The model predicts the pressure drop in the mantle wedge matrix surrounding the channel needed to drive melt flow as a function of position and time.",

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AU - Petford, Nick

AU - Koenders, M A

AU - Turner, S

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AB - We present the results of an analytical model of porous flow of viscous melt into a steadily dilating "channel" (defined as a cluster of smaller veins) in downwelling subarc mantle. The model predicts the pressure drop in the mantle wedge matrix surrounding the channel needed to drive melt flow as a function of position and time.

KW - mantle

KW - subduction

KW - short-lived isotopes

KW - melt flow

KW - melt segregation

U2 - 10.1029/2007JB005563

DO - 10.1029/2007JB005563

M3 - Article

SN - 2169-9356

VL - 113

JO - Journal of Geophysical Research. Solid Earth

JF - Journal of Geophysical Research. Solid Earth

IS - B11202

ER -

Channelized melt flow in downwelling mantle: Implications for 226Ra-210Pb disequilibria in arc magmas

Abstract

Keywords

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