Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains
نویسندگان
چکیده
The Amazonia biome hosts upland closed and open vegetation ecosystems, in which the current biogeographical patterns relate to evolution of physical landscape. Therefore, understanding origin timing substrates supporting different ecosystems is indispensable for better comprehension Amazonian biogeography. Here we used quartz optically stimulated luminescence (OSL) thermally transferred (TT-OSL) dating sandy environments Central Eastern Amazonia, from both outcrop drill core samples (Autazes core: PBAT-15-43). These present ages ranging 1 ka up almost 2 Ma, that were primarily interpreted as depositional fluvial terraces. Moreover, are discussed terms potential geomorphic processes leading formation substrates, such soil mixing apparent age parent bedrock. coupling between OSL TT-OSL techniques allow us date sedimentary deposits covering whole Quaternary, implies a new time window history.
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2022
ISSN: ['2296-6463']
DOI: https://doi.org/10.3389/feart.2022.888443