Скачать или смотреть Día 2. OSL Method Applied to Amazonia River Sediment Dating

Ponente: Dr. Sonia Hatsue Tatumi
Abstract:
In this talk, we present some results of interdisciplinary investigation undertaken by a pioneering team of physicists and geologists, who have been interacting scientifically for the past two decades to establish the Optically Stimulated Luminescence (OSL) chronology of Quaternary sediments from the Amazonian lowlands (Tatumi et al, 2020). In addition, the use of the single aliquot regenerative dose (SAR) protocol and application of age models, the Central Age, Minimum Age and Finite Mixture Age models (Galbraith et al., 1999, Galbraith and Roberts, 2012) to the quartz crystals contained in the sediments will also be shown. As well as the recycling and recovery tests that accompany this protocol (Murray and Roberts, 1998; Murray and Wintle, 2000).
The application of this dating technique concerning the Quaternary history of this region, mainly including depositional environments, changes in vegetation patterns, climatic variations and paleoseismicity due to tectonic reactivations will be shown.