Figure 12. A. Seismic line collected with a generator-injector (GI) gun source (Line 186/1901) along the axis of Iceberg Alley. Siliceous mud and ooze appears as a faint horizontally layered unit overlying dipping Paleogene sediments. Proposed ODP sites are indicated. B. A 3.5-kHz echo sounder line collected along the axis of Iceberg Alley. The sediments show horizontal layering in sileceous mud and diatom ooze (SMO) deposits. Proposed ODP sites and existing gravity cores indicated.

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