Sample Migrated Sections

This page shows a few sample migrated sections from MGL0804. It's a random grab-bag of images to show the quality of data acquired.

This first one is from line HG-6 near the Hess Escarpment. Two features are of note here: First, there's a beautiful flower structure (the burgeoning-upward system of faults between CDP's 2200-2700) that is likely associated with strike-slip motion at the Hess Escarpment. Second, there's a very unusual BSR cutting across the section that -- despite the flat seafloor -- rises from about 2.5 s to 2.2 s from left to right. This planar tilt in the BSR is a clear indicator that temperatures are higher in this basin toward the right, due to the proximity of the continental basement (the steeply dipping reflection that comes in at the right). It's fairly unusual to see a BSR in such close proximity to continental basement.

Another example shows line HG-8, a longer line crossing the entire Hess Escarpment. (On this figure we're just looking at the northwestern half of the line; the escarpment itself is just off the figure to the left). Here you can see active compression (and likely strike-slip faulting) between two structural highs just northwest of the Hess Escarpment.

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