Bathymetry of eastern Ross Sea and offshore Marie Byrd Land. This is the color version of Figure 2. Click on image for larger view and full caption (0.36 Mbytes).
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Bathymetry of Colbeck Trough part of eastern Ross Sea. This is the color version of Figure 3a. Click on image for larger view and full caption (0.36 Mbytes).
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Shaded-relief multibeam bathymetry of Colbeck Trough area. This is the color version of Figure 3b. Click on image for larger view and full caption (0.92 Mbytes).
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Color version of Figure 5a. Seismic Line 10 at high vertical exaggeration (about 25 times at the seafloor), located in Figure 2. This color amplitude display is shown in B&W, interpreted, in the published article. Dotted area is shown with only about 3.4 times vertical exaggeration at seafloor, at the bottom. The regional pattern is of mid and late Cenozoic strata downlapping to the north against a regional unconformity. Click on image for larger view (0.59 Mbytes).
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Color uninterpreted version Figure 5b: located in Fig. 3a. The free-air gravity profile shows that the imaged basins are filled with low density material. Click on image for larger view (0.87 Mbytes).
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Color Figure 4: Migrated color version of Figure 5c. This figure is shown in depth with two times vertical exaggeration. Interpreted version is in published article. Note undeformed upper section and faulted reflections below unconformities. Click on image for larger view (0.63 Mbytes).
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Figure 5d with color interpretation (Line77) and color amplitude (Line 78). The color amplitude display of Line 77 was not very good. Free-air gravity highs over the bathymetric low of Colbeck Trough show that this northern part of the trough does not follow a sub-unconformity sedimentary basin. Indeed, on Line 77 the outer Colbeck trough erodes undeformed late Oligocene and younger strata and cannot be controlled here by deeper structure. Click on image for larger view (1.61 Mbytes).
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Figure 5e with color interpretation. Vertical exaggeration is 3.4 at the seafloor on the .pdf version on this non-migrated low fold (3 and 4) profile. The free air gravity was modeled to show a 500+ m deep basin associated with the synform near S.P. 700. Click on image for larger view (1.09 Mbytes).
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Free-Air Gravity (a), Structure-contour map on Oligocene unconformity (b), residual gravity anomaly (c), and modeled depth-to-basement (d). These are the color versions of Figures 7a through 7b. Click on image for larger view and full captions (0.57 Mbytes).
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Depth-to-Moho model, (Figure 7e), and residual gravity anomaly after subtracting 5 layer model (Figure 7f). Click on image for larger view and full captions (0.15 Mbytes).
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last update: 01 December 2001