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

doi:10.1016/j.apradiso.2019.108847

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

Departamento Académico de Física

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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.

Original language	English
Article number	108847
Journal	Applied Radiation and Isotopes
Volume	153
DOIs	https://doi.org/10.1016/j.apradiso.2019.108847
State	Published - Nov 2019

Bibliographical note

Funding Information:
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 Funda??o de Amparo ? Pesquisa do Estado de S?o Paulo - FAPESP, Brazil (Process number 2014/03085-0).

Funding Information:
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 ).

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

Calcite
Dating
EPR
First settlers
TL

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title = "Dating of carbonate covering cave paintings at perua{\c c}u, Brazil by TL and EPR methods",

abstract = "In the present work, carbonate samples covering wall painting of four points in the same site found at Perua{\c c}u 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.",

keywords = "Calcite, Dating, EPR, First settlers, TL",

author = "Shigueo Watanabe and Cano, {Nilo F.} and Carvalho-J{\'u}nior, {Alvaro B.} and {Ayala Arenas}, {Jorge Sabino} and Gonzales-Lorenzo, {Carlos D.} and Rao, {T. K.Gundu}",

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AU - Cano, Nilo F.

AU - Carvalho-Júnior, Alvaro B.

AU - Ayala Arenas, Jorge Sabino

AU - Gonzales-Lorenzo, Carlos D.

AU - Rao, T. K.Gundu

PY - 2019/11

Y1 - 2019/11

N2 - 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.

AB - 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.

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

Abstract

Bibliographical note

Keywords

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