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|Title:||Subsurface sediment mobilization: introduction|
|Author:||Van Rensbergen, P.|
|Citation:||Geological Society Special Publication, 2003; 216(1):1-8|
|Publisher:||Geological Society Publishing House|
|Pieter Van Rensbergen, Richard R. Hillis, Alex J. Maltman & Christopher K. Morley|
|Abstract:||Subsurface sediment mobilization (SSM) — which includes soft sediment deformations, sand injections, shale diapirs and mud volcanoes — is more widespread than previously thought. The ever-increasing resolution of subsurface data yielded many new observations of SSM, not only from regions obviously prone to sediment remobilization, such as an active tectonic setting or in a region with exceptionally large sediment supply, but also from tectonically quiescent areas. Until now, all the different aspects of SSM have largely been treated as separate phenomena. There is very little cross-referencing between, for example, studies of mud volcanoes and those of sand injections, although both are caused by sediment fluidization. Divisions according to sediment type, mobilization depth or triggering mechanism make little sense when trying to understand the processes of SSM. There is a gradation in mobilization processes that cause considerable overlap between categories in any classification. Hence, it is necessary to integrate our understanding of all types of SSM, regardless of scale, depth, location, grain size or triggering mechanism. In addition, polygonal faults are important in this context, as this nontectonic structural style is closely associated with sedimentary injections and may also reflect large scale mobilization.|
|Description:||Copyright © 2003 Geological Society of London|
|Appears in Collections:||Australian School of Petroleum publications|
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