The oldest seafloor massive sulfide deposits at the Mid - Atlantic Ridge: 230th/u chronology and composition

• Autorzy: Kuznetsov V. , Tabuns E. , Kuksa K. , Cherkashov G. , Maksimov F. , Bel’Tenev V. , Lazareva L. , Zherebtsov I. , Grigoriev V. , Baranova N.

Identyfikatory

DOI

10.1515/geochr-2015-0009

• Języki publikacji: EN

Abstrakty

EN

A geochronological and geochemical study on 10 samples of seafloor massive sulfides (SMS) from the inactive Peterburgskoye hydrothermal field at the Mid-Atlantic Ridge (MAR) was carried out. The 230Th/U ages of the SMS are the oldest for the Quaternary hydrothermal ores ever found at the ocean floor. According to them the hydrothermal activity at Peterburgskoye field started at least 170 ka and continued down to 63 ka. The oldest hydrothermal ores from this field consist mainly of pyrite and chalcopyrite and have geochemical properties typical for SMS associated with basalts.

Słowa kluczowe

EN

Mid-Atlantic Ridge; age of hydrothermal activity; ore formation; 230Th/U dating; geochronology; geochemistry

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2015
• Tom: Vol. 42, no.1
• Strony: 100--106
• Opis fizyczny: Bibliogr. 29 poz., rys., wykr.

Twórcy

autor

Kuznetsov V.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia

autor

Tabuns E.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia

autor

Kuksa K.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia

autor

Cherkashov G.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia
• Institute for Geology and Mineral Resources of the Ocean (VNIIOkeangeologia), Angliysky Prospect 1, 190121, St. Petersburg, Russia

autor

Maksimov F.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia

autor

Bel’Tenev V.

• Polar Marine Geosurvey Expedition, Pobedy Str. 24, 198412 Lomonosov, St. Petersburg, Russia

autor

Lazareva L.

• Polar Marine Geosurvey Expedition, Pobedy Str. 24, 198412 Lomonosov, St. Petersburg, Russia

autor

Zherebtsov I.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia

autor

Grigoriev V.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia

autor

Baranova N.

• St. Petersburg State University, V.O., 10-th Line 33/35, 199178, St. Petersburg, Russia

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