230TH/U dating of massive sulfides from the logatchev and rainbow hydrothermal fields (Mid-Atlantic Ridge)

• Autorzy: Kuznetsov V. , Cherkashev G. , Lein A. , Shilov V. , Maksimov F. , Arslanov K. , Stepanova T. , Baranova N. , Chernov S. , Tarasenko D.
• Języki publikacji: EN

Abstrakty

EN

A radiochemical study was carried out on massive sulfides from three hydrothermal fields in the Mid-Atlantic Ridge. The main objective was to check whether 230Th/U dating yields reliable results. The absolute 230Th/U ages of massive sulfide samples of three hydrothermal fields at the Mid Atlantic Ridge were determined 58.2±4.2 ka and 16.8±1.0 ka for the "Logatchev-1" site, 3.9±0.4 ka for the "Logatchev-2" site and 23.0±1.5 ka, 3.9±0.6 ka and 2.2±0.3 ka for the "Rainbow" site. The dates correspond to the activation periods of hydrothermal ore formation systems.

Słowa kluczowe

EN

230Th/U dating; hydrothermal activity; oceanic massive sulfides; geochronology

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2006
• Tom: Vol. 25
• Strony: 51--55
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Kuznetsov V.

autor

Cherkashev G.

autor

Lein A.

autor

Shilov V.

autor

Maksimov F.

autor

Arslanov K.

autor

Stepanova T.

autor

Baranova N.

autor

Chernov S.

autor

Tarasenko D.

• Geographical Research Institute, St. Petersburg State University, V.O., 10-th Line 33, 199178, St. Petersburg, Russia,

Bibliografia

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