Dating of carbonate covering cave paintings at peruaçu, Brazil by TL and EPR methods

Shigueo Watanabe, Nilo F. Cano, Alvaro B. Carvalho-Júnior, Jorge Sabino Ayala Arenas, Carlos D. Gonzales-Lorenzo, T. K.Gundu Rao

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2 Citas (Scopus)

Resumen

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.

Idioma originalInglés
Número de artículo108847
PublicaciónApplied Radiation and Isotopes
Volumen153
DOI
EstadoPublicada - nov. 2019

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© 2019 Elsevier Ltd

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