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Acquisition of a luminescence dating system and a precision microsampler for the study of environmental changes in the Quaternary period

Grant number: 09/53988-8
Support type:Multi-user Equipment Program
Duration: November 01, 2010 - June 30, 2014
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Principal Investigator:Paulo César Fonseca Giannini
Grantee:Paulo César Fonseca Giannini
Home Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
EMU web page: Página do Equipamento Multiusuário não informada
Use scheduling: E-mail de agendamento não informado

Abstract

We propose the installation of a system for optically stimulated luminescence (OSL) dating, which employs the single aliquot regeneration (SAR) protocol, and the acquisition of a microsampler (micromill) for the collection of samples at the sub-micron scale, with visual control. The OSL-SAR dating system consists of a germanium detector, an automated luminescence reader with a beta radiation source, an accessory for single-grain OSL measurements with a green laser, and a gas exhaust hood for sample preparation. The microsampler consists of a tungsten carbide drill coupled to an optical microscope with an automated, referenced stage. The main goal of this request is to deeper integrate the research into environmental changes during the Quaternary Period, emphasizing the use of the microsampler for high-precision isotopic analysis of microstratigraphic successions in carbonate materials, as well as focusing on implementation of the single-grain OSL-SAR method, for dating of terrigenous sedimentation events, in Brazil. The correlation of the geochronological results which will be obtained by different methods, for both carbonate and terrigenous materials, will represent an unprecedented advance in research regarding environmental changes during the Quaternary Period in Brazil. The acquisition of the OSL-SAR system will fill a gap in the Brazilian field of geosciences, in terms of analytical methods. Despite the fact that the USP Institute of Geosciences (the petitioner) is the most well-equipped and active geochronology research center in Latin America, neither it nor any other institution in Brazil possesses equipment for dating Quaternary terrigenous sediment, combining precision with the capacity of meeting the needs of a large number of users. We plan to explore various other potential geosciences applications of the requested equipment. The microsampler will be applied in ultraprecise collection of samples from rocks, fossils, and archaeological materials in general, regardless of age or nature. The spectrometer will also be employed for the analysis of provenance and stratigraphic correlation in rocks of any age, with potential use for environmental radiation measurements. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
A novel method for analyzing marine sediments contributes to paleoclimate reconstitution 
Analysis will reconstruct 1 million years of Atlantic Rainforest history 
Articles published in other media outlets (11 total):
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A novel method for analyzing marine sediments contributes to paleoclimate reconstitution | PHARMA JOBS 
A novel method for analyzing marine sediments contributes to paleoclimate reconstitution 
A Novel Method for Analyzing Marine Sediments Contributes to Paleoclimate Reconstitution 
A novel method for analyzing marine sediments contributes to paleoclimate reconstitution | PHARMA JOBS 
A novel method for analyzing marine sediments contributes to paleoclimate reconstitution | PHARMA JOBS 
A novel method for analyzing marine sediments contributes to paleoclimate reconstitution | PHARMA JOBS 
Novo método de análise de sedimentos marinhos contribui para reconstituição do paleoclima 
Pesquisa analisa sedimentos coletados na costa do Nordeste 
Novo método de análise de sedimentos marinhos contribui para reconstituição do paleoclima 
Pesquisa: Novo método de análise de sedimentos marinhos contribui para reconstituição do paleoclima 
Novo método de análise de sedimentos marinhos contribui para reconstituição do paleoclima 

Scientific publications (9)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ZULAR, ANDRE; UTIDA, GISELLE; CRUZ, FRANCISCO W.; SAWAKUCHI, ANDRE O.; WANG, HONG; BICEGO, MARCIA; GIANNINI, PAULO C. F.; RODRIGUES, I, SELMA; GARCIA, GUILHERME P. B.; VUILLE, MATHIAS; SIFEDDINE, ABDEL; ZOCATELLI, RENATA; TURCQ, BRUNO; MENDES, VINICIUS R. The effects of mid-Holocene fluvio-eolian interplay and coastal dynamics on the formation of dune-dammed lakes in NE Brazil. QUATERNARY SCIENCE REVIEWS, v. 196, p. 137-153, SEP 15 2018. Web of Science Citations: 1.
PUPIM, FABIANO DO NASCIMENTO; ASSINE, MARIO LUIS; SAWAKUCHI, ANDRE OLIVEIRA. Late Quaternary Cuiaba megafan, Brazilian Pantanal: Channel patterns and paleoenvironmental changes. QUATERNARY INTERNATIONAL, v. 438, n. A, p. 108-125, MAY 5 2017. Web of Science Citations: 5.
PUPIM, FABIANO DO NASCIMENTO; SAWAKUCHI, ANDRE OLIVEIRA; MINELI, THAYS DESIRE; NOGUEIRA, LUCIANA. Evaluating isothermal thermoluminescence and thermally transferred optically stimulated luminescence for dating of Pleistocene sediments in Amazonia. QUATERNARY GEOCHRONOLOGY, v. 36, p. 28-37, SEP 2016. Web of Science Citations: 2.
ANDRÉ OLIVEIRA SAWAKUCHI; VINICIUS RIBAU MENDES; FABIANO DO NASCIMENTO PUPIM; THAYS DESIREE MINELI; LIGIA MARIA ALMEIDA LEITE RIBEIRO; ANDRE ZULAR; CARLOS CONFORTI FERREIRA GUEDES; PAULO CÉSAR FONSECA GIANNINI; LUCIANA NOGUEIRA; WILLIAM SALLUN FILHO; MARIO LUIS ASSINE. Optically stimulated luminescence and isothermal thermoluminescence dating of high sensitivity and well bleached quartz from Brazilian sediments: from Late Holocene to beyond the Quaternary?. BRAZILIAN JOURNAL OF GEOLOGY, v. 46, p. 209-226, Jun. 2016.
MENDES, VINICIUS RIBAU; FONSECA GIANNINI, PAULO CESAR. Coastal dunefields of south Brazil as a record of climatic changes in the South American Monsoon System. Geomorphology, v. 246, p. 22-34, OCT 1 2015. Web of Science Citations: 4.
ZULAR, ANDRE; SAWAKUCHI, ANDRE O.; GUEDES, CARLOS C. F.; GIANNINI, PAULO C. F. Attaining provenance proxies from OSL and TL sensitivities: Coupling with grain size and heavy minerals data from southern Brazilian coastal sediments. Radiation Measurements, v. 81, n. SI, p. 39-45, OCT 2015. Web of Science Citations: 2.
ROSSETTI, DILCE DE FATIMA; POLIZEL, SILVIA PALLOTI; LISBOA COHEN, MARCELO CANCELA; RUIZ PESSENDA, LUIZ CARLOS. Late Pleistocene-Holocene evolution of the Doce River delta, southeastern Brazil: Implications for the understanding of wave-influenced deltas. MARINE GEOLOGY, v. 367, p. 171-190, SEP 1 2015. Web of Science Citations: 21.
RIBEIRO, L. M. A. L.; SAWAKUCHI, A. O.; WANG, H.; SALLUN FILHO, W.; NOGUEIRA, L. OSL dating of Brazilian fluvial carbonates (tufas) using detrital quartz grains. QUATERNARY INTERNATIONAL, v. 362, p. 146-156, MAR 19 2015. Web of Science Citations: 3.
VINÍCIUS RIBAU MENDES; PAULO CÉSAR FONSECA GIANNINI; CARLOS CONFORTI FERREIRA GUEDES; REGINA DEWITT; HELENA ASMAR DE ABREU ANDRADE. Central Santa Catarina coastal dunefields chronology and their relation to relative sea level and climatic changes. BRAZILIAN JOURNAL OF GEOLOGY, v. 45, p. 79-95, Ago. 2015.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.