Upper Pleistocene deposits of the Comprida Island (São Paulo State) dated by thermoluminescence method

Anais da Academia Brasileira de Ciências

Kenitiro Suguio²  Sonia H. Tatumi¹  EmÍlia A. Kowata¹  Casimiro S. Munita¹  Rosemeire P. Paiva¹ 

[1] ,USP Instituto de Geociências São Paulo SP ,Brasil

关键词: thermoluminescence ages;    Pleistocene;    sea level;    São Paulo State;    idades por termoluminescência;    Pleistoceno;    nível do mar;    Estado de São Paulo;   

DOI  :  10.1590/S0001-37652003000100010

来源: SciELO

【 摘 要 】

The Cananéia (Upper Pleistocene) and the Comprida Island (Holocene) formations, outcropping in the Comprida island (SP) have been mapped using geomorphological and lithological criteria. Only one sample of the Cananéia Formation, collected in the homonymous island in front of the Comprida Island, was beyond the limit of the standard radiocarbon method. But since the publication of the geological map of the area in 1978, there has been some doubt on the real occurrence of Pleistocene deposits in southern extremity of Comprida Island. This paper deals with the results of thermoluminescence (TL) ages of eight samples from Comprida Island, which corroborate the Pleistocene age assumed during mapping surveys of these deposits. On the other hand, possible interpretations of the obtained ages, in relation to their depositional environments and related northern hemisphere Quaternary glaciations, are presented.

【 授权许可】

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