ESTIMATING BASAL FRICTION IN ACCRETIONARY WEDGES FROM THE GEOMETRY AND SPACING OF FRONTAL FAULTS

dc.contributor.author	Schott B.
dc.contributor.author	Koyi H.A.
dc.date.accessioned	2021-03-17T02:22:34Z
dc.date.available	2021-03-17T02:22:34Z
dc.date.issued	2001
dc.identifier	https://www.elibrary.ru/item.asp?id=842124
dc.identifier.citation	Earth and Planetary Science Letters, 2001, 194, 1-2, 221-227
dc.identifier.issn	0012-821X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/26835
dc.description.abstract	Elastic theory applied to the deformation in accretionary wedges is used to calculate the condition for slip along an active frontal fault and the basal decollement. The equations for calculating the stresses can be solved for the coefficient of basal friction in the situation of the formation of a new frontal thrust fault. This allows us to calculate the efficient coefficient of basal friction, which includes the weakening effect of pore-fluid pressure, from geometric parameters and material properties only. The geometric parameters, like fault dip and layer thickness, can be derived from high-resolution seismic cross-sections. Application of our analysis to the Makran and the Nankai accretionary wedge allows us to estimate the upper limit of the effective coefficient of basal friction, μb~0.16 and μb~0.2, in these two areas respectively.
dc.subject	ACCRETIONARY WEDGES
dc.subject	FRICTION
dc.subject	IMBRICATE TECTONICS
dc.subject	THRUST FAULTS
dc.title	ESTIMATING BASAL FRICTION IN ACCRETIONARY WEDGES FROM THE GEOMETRY AND SPACING OF FRONTAL FAULTS
dc.type	Статья

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