Erosion by high stress abrasion of convergent margins from bursts 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.
A GENERIC MODEL OF SUBDUCTION EROSION / VON HUENE R; RANERO C.R; P. VANNUCCHI. - In: GEOLOGY. - ISSN 0091-7613. - STAMPA. - 32/10:(2004), pp. 913-916. [10.1130/G20563.1]
A GENERIC MODEL OF SUBDUCTION EROSION
VANNUCCHI, PAOLA
2004
Abstract
Erosion by high stress abrasion of convergent margins from bursts 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.
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