OSL and EPR dating of shells and sediments from Congonhas II sambaqui, Santa Catarina, Brazil

Nilo F. Cano, Jorge Sabino Ayala Arenas, Henry S. Javier-Ccallata, Shigueo Watanabe

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

There are about thousands of shell-mounds (sambaqui in Portuguese) along the Brazilian sea coast. They have been built by sea water and therefore geologists used sambaquis positions to indicate sea level in the past. In the state of Santa Catarina in southern Brazil Ca. 60 very large sambaquis are found. One of them near the town of Tubarão is called Congonhas II. In this work we carried out OSL and EPR dating of moluscus shells and sediments collected from Congonhas II from its base and from a point at higher position. For the samples from basal position of Congonhas II ages from 3850 ± 340 to 4040 ± 270 years and samples from higher position age of about 3300 ± 230 to 3400 ± 510 years have been obtained. These results agree with radiocarbon dates and geologically expected data relative to past sea level fluctuation.

Original languageEnglish
Article number108240
JournalRadiation Physics and Chemistry
Volume167
DOIs
StatePublished - Feb 2020

Bibliographical note

Funding Information:
The authors wish to thank Prof. Dr. Deisi Scunderlick, coordinator of GRUPEP laboratory, South University of Santa Catarina by participation and collaboration in the collection of the samples. This work was carried out with financial support from Fundação de Amparo à Pesquisa do Estado de São Paulo - FAPESP , Brazil (Process number 2014/03085-0 ).

Funding Information:
The authors wish to thank Prof. Dr. Deisi Scunderlick, coordinator of GRUPEP laboratory, South University of Santa Catarina by participation and collaboration in the collection of the samples. This work was carried out with financial support from Funda??o de Amparo ? Pesquisa do Estado de S?o Paulo - FAPESP, Brazil (Process number 2014/03085-0).

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

  • Congonhas II sambaqui
  • Dating
  • EPR
  • OSL

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