Published 1983 | Version v1
Report Open

Dating pleistocene fossil coastal sand dunes by thermoluminescence

Creators

  • 1. CNRS, Paris (France)
  • 2. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro
  • 3. Rio Grande do Sul Univ., Porto Alegre (Brazil). Centro de Estudos de Geologia Costeira Oceanica

Description

It was shown recently that sunlight exposure is able to bleach most of the geological thermoluminescence (TL) of wind transported sediments. This property has been used in an attempt to date dunes from the well developed recent quaternary coastal dunes system of Rio Grande do Sul. Preliminary results presented here, show that TL dating on fossil sand dunes from Rio Grande do Sul should be possible in a time range from present to at least 50.000 yr and possibly more than 100.000 yr. (Author)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Recentemente ficou demonstrado que sedimentos eolicamente transportados perdem a maior parte de sua termoluminescencia (TL) geologica quando expostos a luz solar. Esta propriedade foi usada na tentativa de obterem-se idades de sistemas de dunas do quaternario costeiro do Rio Grande do Sul. Os resultados preliminares apresentados aqui, revelam que datacoes por termoluminescencia em dunas fosseis, sao possiveis abrangendo o intervalo de tempo compreendido entre o presente ate, pelo menos 50.000 anos e, possivelmente mais do que 100.000 anos. (Autor)

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Additional details

Publishing Information

Imprint Pagination
20 p.
Report number
CBPF-NF--056/83

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
16066755
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
AGE ESTIMATION; BRAZIL; EXPERIMENTAL DATA; FOSSILS; GEOLOGY; GLOW CURVE; SAND; THERMOLUMINESCENCE
Descriptors DEC
DATA; DEVELOPING COUNTRIES; EMISSION; INFORMATION; LUMINESCENCE; NUMERICAL DATA; PHOTON EMISSION; SOUTH AMERICA