0000000000532399

AUTHOR

Jfd Chubaci

showing 3 related works from this author

DATING OF BRAZILIAN SHELLS THROUGH ELECTRON PARAMAGNETIC RESONANCE

2020

Electron paramagnetic resonance shell dating
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EPR dating of shells from Malhada Marsh, Rio de Janeiro, Brazil

2020

The formation of the coastal plain of the Brazilian sea is mainly due to the fluctuation of relative sea level in the past. Armacao dos Buzios or simply Buzios is a municipality in the microregion of lakes, in the state of Rio de Janeiro. In this region there is a lowland area about two meters above current sea level. This lowland area is also known as coastal plain of Una River. It is expected that during the Holocene period the sea level reached a maximum about 2.5 meters above the current level. During that time billions of mollusks lived and proliferated in the shallow waters around the coastal plain of the Una River. As they died their shells formed a layer in the soil including Malhad…

geographygeography.geographical_feature_categoryPast sea levelMarshSettore ING-IND/20 - Misure E Strumentazione NucleariCoastal plainGeneral MedicineSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)law.inventionCurrent (stream)OceanographylawShellPeriod (geology)DatingEPRRadiocarbon datingSea levelGeologyHoloceneAnnals of Marine Science
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Dating of Brazilian shells through electron paramagnetic resonance

2019

In the present work we report dating procedure of these shells by using the electron paramagnetic resonance. The first step of the analysis was the definition of the optimal procedure for sample preparation. At this aim the analysis of the sample composition was carried out by X-ray fluorescence (XRF) measurements and an accurate analysis was study on the effect of the chemical etching with varying typology and concentration of acid to be used for removing the external layer of shells which are affected by alpha particles.

electron paramagnetic resonanceSettore ING-IND/20 - Misure E Strumentazione NucleariSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)
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