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- W2078744323 abstract "Chemical studies of various modern and fossil spore walls of gymnosperms, angiosperms, pteridosperms, fungi and algae show the majority to contain sporopollenin now known to be derived from carotenoid esters by an oxidative polymerisation process. Chemical studies on microfossil walls and associated insoluble organic matter (kerogen) present in sediments up to 3,400 to 3,700 m.y. old suggest that these may have a common identity with sporopollenin of modern spore exines. After deposition in sediments, spore exines undergo microbiological and chemical alteration associated with variation of temperature, time and pressure. Examination of the thermal changes occurring in spore exines is presented including stable carbon isotope studies, and the potential of sporopollenin as a major progenitor of natural petroleum is discussed." @default.
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- W2078744323 date "1972-09-01" @default.
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- W2078744323 title "Geochemistry of sporopollenin" @default.
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- W2078744323 doi "https://doi.org/10.1016/0009-2541(72)90078-2" @default.
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