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Paleoenvironmental Records Influenced by Sea Level Variations During the Holocene in the Vitória Bay Region, Espírito Santo State, Brazil

  • Alex da Silva de Freitas (a1), Cintia Ferreira Barreto (a1), Alex Cardoso Bastos (a2) and José Antônio Baptista Neto (a1)
Abstract
Abstract

Vitória Bay is located in the south-central part of the State of Espírito Santo (SES). Multiproxy analyses were performed on samples from a 490-cm-long sediment core collected at the coordinates 40°18′23′′W and 20°14′48′′S. The objective of this study was to identify and integrate the multiproxy data to determine the environmental dynamics during the Holocene. The material was subsampled every 10 m and submitted to standard methodological processing. The sediment core was dated to two depths: the oldest age was between 9396 and 9520 cal yr BP at a 480-cm depth, and the youngest age was from 7423 to 7511 cal yr BP at a 304-cm depth. The integrated analysis revealed evidence of three major environmental changes in Vitória Bay. The first phase had a fluvial influence (depth of 490–480 cm; 9396–9520 cal yr BP). This was followed by a transitional period (depth of 480–290 cm; 7423–7511 cal yr BP) with a salt influence due to the Last Marine Transgression (LMT). Later, the environmental stability was similar to that of today (290 cm to the core top). This was a reflection of the Last Marine Regression (LMR) in the Holocene.

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Corresponding author
*Corresponding author. Email: alexsilfre@gmail.com.
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Radiocarbon
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