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 language | English |
|---|---|
| Article number | 108240 |
| Journal | Radiation Physics and Chemistry |
| Volume | 167 |
| DOIs | |
| State | Published - 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