The subglacial Antarctic Ice Sheet is one of the lesser known and most inaccessible places for direct sampling. This work, conducted under the Italian Program for Antarctic Research (PNRA), aims to use results of multicomponent analyses and observations on ice proximal marine sediment cores (Ross Sea, Glomar Challenger Area) as the key data set to introduce the first general sedimentary model(s) into an Astrobiology Roadmap scientific scheme, i.e.: Goals 5 and 8. Information obtained from Antarctic glacigenic sediments can provide plausible models for planetary bodies where glacial ice fields and related processes occur (i.e., the ice caps of Mars, and Jupiter's icy moon, Europa). The analyses (Corg and biogenic opal) on diamicton mud grains (MDGS) suggest that fine-grained ice rafted detritus (IRD) can retain their original depositional settings, e.g.; exposed outcrops and subglacial lake basins, after incorporation within marine sediment and provide some information on the Antarctic interiors eroded by the East and West Antarctic Ice Sheets. Finally, observations on marine and ice cores suggest that MDGS and silt-clay aggregates are more widely distributed throughout Antarctic sediments and glacial fields than previously believed. The most reliable models should consider potential sources and processes/mechanisms explaining high-Corg content in subglacially-derived material. Ice proximal marine sediment would provide an unlimited amount of MDGS samples as continent-derived material as test sources of organics of use in astrobiological research.
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