Color version of Figure 5e, located in Figure 3. This figure shows clearly folded reflections below the unconformity (U). The free-air gravity shows a low above the synform, supporting our interpretation that the RSS1-lower strata are low-density sedimentary rocks. The RSS2-lower, RSS1-upper, and RSS1-lower strata all outcrop (within the resolution of our data) along this trend along the west side of Colbeck Trough. These strata have never been cored to our knowledge in eastern Ross Sea. The .pdf version has better resolution for the B&W seismic. Vertical exaggeration is 3.4 times at the seafloor in the .pdf version of this figure.