Figure F11. Glacial sequences and interpreted lithofacies of GOA-2505 seismic section based on glacial systems tracts at proposed drill sites. The GMiST includes sediment accumulated during interglacial periods. The GRST includes glacial sediment deposited at the glacial grounding-line, and the GMaST is composed of sediment deposited at the continental slope during glacial advance. Each proposed drill core should sample at least eight interglacial intervals with thicknesses up to 5 ms. Sequence geometries indicate a overall reduction in shelf accommodation space over the past 2 m.y. Such a reduction in accommodation space could be eustatic in nature and influenced by fluctuations of the Cordilleran ice sheet. After Willems (2009).
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