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- W4328103647 abstract "Earth’s biota leave traces in the form of molecular fossils, typically from the membrane lipids of organisms, preserved in the sedimentary rock record. However, since the environmental conditions prevailing at the time can impact the nature of those remains, it is important to understand the diagenetic processes that occur under contrasting regimes. In this study, we investigated the preservation under cold and arid climatic conditions of intact polar lipids, bacteriohopanepolyols, and quinones preserved in a ∼700-year-old relict, desiccated microbial mat. We compared these to lipid signatures in actively growing counterparts from nearby meltwater ponds of McMurdo Ice Shelf in Antarctica. Substantial differences in lipid distribution were evident between active and relict mats, suggesting that significant diagenetic degradation of lipid biomarkers occurs within a short period, thereby illuminating the selective preservation of certain polar compound classes under cold and dry conditions." @default.
- W4328103647 created "2023-03-22" @default.
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- W4328103647 date "2023-05-01" @default.
- W4328103647 modified "2023-09-27" @default.
- W4328103647 title "Lipid biomarker comparison of relict and active microbial mats from the McMurdo Ice Shelf, Antarctica" @default.
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- W4328103647 doi "https://doi.org/10.1016/j.orggeochem.2023.104591" @default.
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