Title
Dating of carbonate covering cave paintings at peruaçu, Brazil by TL and EPR methods
Date Issued
01 November 2019
Access level
metadata only access
Resource Type
journal article
Author(s)
Watanabe S.
Carvalho-Júnior A.B.
Rao T.K.G.
Universidad Federal de Sao Paulo
Universidad de Sao Paulo
Publisher(s)
Elsevier Ltd
Abstract
In the present work, carbonate samples covering wall painting of four points in the same site found at Peruaçu National Park in the extreme northwest of the state of Minas Gerais, Brazil, has been investigated and dated by thermoluminescence (TL) and electron paramagnetic resonance (EPR) techniques. The EPR spectrum of the carbonate samples presented the typical six signals due to Mn2+ ion and signals around g~2.0 due to SO2- and CO2-. The thermal stability and dose response of the EPR signals were found to be suitable for an age determination using the center due to CO2-. The carbonate sample exhibits TL peaks at approximately 350 °C. TL and EPR dating of the carbonate samples that covered the cave paintings gave an age of 33.13 to 48.40 ka. This series of dating data indicate that in the region about 220-250 km from the coast and extending from the State of Piaui, Bahia to Minas Gerais people lived around 50000 years ago.
Volume
153
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Subjects
Scopus EID
2-s2.0-85072159660
PubMed ID
Source
Applied Radiation and Isotopes
ISSN of the container
09698043
Sponsor(s)
The authors wish to thank Ms. E. Somessari of the Institute for Energy and Nuclear Researches (IPEN), Brazil, for kindly carrying out the irradiation of the samples. This work was carried out with partial financial support from Fundação de Amparo à Pesquisa do Estado de São Paulo - FAPESP, Brazil (Process number 2014/03085-0).
Sources of information:
Directorio de Producción Científica
Scopus