Concordant ²¹⁰ Pb and ¹³⁷Cs ages of Black Sea anoxic unconsolidated sediments.

• Autorzy: Florea N. , Cristache C. , Oaie G. , Duliu O. G.
• Języki publikacji: EN

Abstrakty

EN

Two independent geochronologic radiometric methods: ¹³⁷ Cs and ²¹⁰Pb were used to determine the sedimentation rate and subsequently to date the oldest sediments of a 50 cm core containing unconsolidated sediments collected at a depth of 600 m below sea surface in the anoxic zone of the Western Black Sea, off the Romanian town of Constanta. Both methods gave coincident value within experimental uncertainties of 0.42š0.20 mmźy-1 for ¹³⁷ Cs and 0.49š0.03 mmźy-1 in the case of ²¹⁰ Pb, within the Constant Initial Concentration model, which gave for the lower most sediments an age of 1.00š0.01 ka. The constant sedimentation model as well as the possible causes of observed discrepancy between experimental uncertainties are discussed.

Słowa kluczowe

EN

Black Sea; anoxic sediments; ¹³⁷Cs; ²¹⁰Pb; absolute age; sedimentation rate

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2011
• Tom: Vol. 38, no. 2
• Strony: 101--106
• Opis fizyczny: Bibliogr. 26 poz.

Twórcy

autor

Florea N.

autor

Cristache C.

autor

Oaie G.

autor

Duliu O. G.

• University of Bucharest, Department of Atomic and Nuclear Physics, P.O. Box MG-11, 077125 Magurele (Ilfov), Romania,

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