Genesis and Distribution of Low Fluvial Terraces Formed by Holocene Climate Pulses in Brazil
نویسندگان
چکیده
Low fluvial terraces present azonal spatialization, encompassing several geomorphological compartments and climate zones in Brazil. Their genesis is directly related to river dynamics. When influenced by allogenic forces, such as Holocene pulses, it results channel incision posterior abandonment of the floodplain. Relatively plain landforms at different altimetric levels identified between current floodplain hillslope (low terraces) are a result these processes. Previous works using Optically Stimulated Luminescence (OSL) low rivers Brazil have indicated morpho-chronologic similarities depositional events, raising hypothesis feedbacks adjustments relatively simultaneous events. Considering dynamics, this study employed OSL obtain absolute dating information for 114 samples taken from distinct 30 Brazil, integrating database IG-UNICAMP laboratory Geomorphology Environmental Analysis. Based on data statistical analysis (cluster correlation analysis), aimed identify relationships variables which might controlled spatial homogenous heterogeneous during paleoenvironmental contexts. The proposed methodology tested fundamental regional climatic geomorphology, obtained may contribute future discussions relationship anthropic occupation.
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ژورنال
عنوان ژورنال: Water
سال: 2022
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w14192977