Mineral radioactivity in sands as a mechanism for fixation of organic carbon on the early Earth.
作者： John Parnell
DOI: 10.1023/B:ORIG.0000043132.23966.A1
关键词: Monazite 、 Earth (classical element) 、 Carbon 、 Chemistry 、 Environmental chemistry 、 Uranium 、 Archean 、 Mineral 、 Mineralogy 、 Total organic carbon 、 Early Earth
摘要: Irradiation of organic molecules by mineral radioactivity is a feasible alternative to cosmic irradiation precipitate solid carbon-rich matter on the early Earth. Radioactive (uranium- and thorium-rich) minerals have been concentrated at Earth's surface, accumulated accretionary coatings carbon due irradiation, since Archean times. The accretion process could occurred surface or in sub-surface, independent terrestrial extraterrestrial source for carbon.
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