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Block diagram of a channel-levee system illustrating the key subenvironments. Modified from Roberts and Compani (1996). Also shown is an RMS amplitude extraction map (20-ms gated window) of a channel-levee system with a prominent Miocene-age crevasse splay, offshore Angola. This crevasse is fan shaped and resulted from an avulsion in the channel. The seismic profile shows the interval from which the attribute was extracted. After Mayall and Stewart (2000).Reprinted with permission of the Gulf Coast Section SEPM Foundation.
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