Meteorite terrestrial ages in Oman based on gamma spectrometry and sediment dating, focusing on the Ramlat Fasad dense collection area
نویسندگان
چکیده
We combine the search for young meteorites in Omani-Swiss collection (˜1140 fall events collected 2001–2018) using 22Na and 44Ti with luminescence 14C sediment ages from Ramlat Fasad (RaF) dense area (DCA) of Oman to obtain combined terrestrial maximum accumulation times, test whether proportion is consistent models meteorite flux weathering. Gamma-ray spectrometry data show that two (0.17%) fell during 20 yr preceding this study, rates accumulation. In RaF DCA, are found on Quaternary Neogene sediments, providing constraints their ages. activities 032 L6 strewn field deflated parts active dunes indicate an age 0.2–0.3 ka while dune sand optically stimulated constrain upper 1.6 ka. Extensive dating methods DCA showed all other finds were made significantly older sediments (>10 ka). Dense accumulations blowouts Pliocene Marsawdad formation. Our results low compared find areas, previously determined high average than suggested by exponential decay. may commonly have been buried within soils over extended periods, acting as a temporary protection against erosion.
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2021
ISSN: ['1945-5100', '1086-9379']
DOI: https://doi.org/10.1111/maps.13758