230Th/U chronology of ore formation within the semyenov hydrothermal district (13°31′ N) at the Mid-Atlantic ridge
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St. Petersburg State University, V.O., 10-th Line 33, 199178, St. Petersburg, Russia
Institute for Geology and Mineral Resources of the Ocean (VNIIOkeangeologia), Angliysky Prospect 1, 190121, St. Petersburg, Russia
Polar Marine Geosurvey Expedition, Pobedy Str. 24, 198412, Lomonosov, St. Petersburg, Russia
Online publication date: 2011-01-28
Publication date: 2011-03-01
Geochronometria 2011;38(1):72-76
A radiochemical study was carried out on massive sulfides from Semyenov hydrothermal district at the Mid-Atlantic Ridge. New and published results provide evidence that 230Th/U ages obtained for massive sulfides are reliable. The sulfide deposits from the West, North-West, North-East, and East hydrothermal sites at the Semyenov hydrothermal district were formed between ∼124 ka and ∼37 ka ago. The hydrothermal activity might have started in the eastern part of the district and moved to the west by episodic ore formation.
Beltenev V, Ivanov V, Rozhdestvenskaya I, Cherkashov G, Stepanova T, Shilov V, Pertsev A, Davydov M, Egorov I, Melekestseva I, Narkevsky E and Ignatov V, 2007. A new hydrothermal field at l3°30′ N on the Mid-Atlantic Ridge. InterRidge News 16: 9–10.
Beltenev V, Ivanov V, Rozhdestvenskaya I, Cherkashov G, Stepanova T, Shilov V, Davydov M., Laiba A, Kaylio V, Narkevsky E, Pertsev A, Dobretzova I, Gustaytis A, Popova Ye, Amplieva Ye and Evrard C, 2009. New data about hydrothermal fields on the Mid-Atlantic Ridge between 11°–14° N: 32 and Cruise of R/V Professor Logatchev. InterRidge News 18: 14–18.
Bogdanov YuA, Lein AYu, Ulyanov AA, Maslennikov VV, Ulyanova NV and Sagalevich AM, 2006. Nachalnaya faza gidrotermalnogo rudonakopleniya na pole 9°50′ Vostochno-Tikhookeanskogo podnyatiya (Initial stage of ore accumulation in the 9°50′ field at the East Pacific Rise. Okeanologia 46(1): 88–102 (in Russian).
Cherkasev GA, 1995. Hydrothermal input into sediments of the Mid-Atlantic Ridge. In: Parsson LM, Walker CL and Dixon DR, Eds., Hydrothermal Vents and Processes. Geological Society London, Special Publication 87: 223–229.
Huh CA and Ku TL, 1984. Radiochemical observation on manganese nodules from three sedimentary environments in the North Pacific. Geochimica et Cosmochimica Acta 48(5): 951–963, DOI: 10.1016/0016-7037(84)90187-X.
Ivanovich M and Harmon RS, Eds., 1992. Uranium-Series Disequilibrium: Applications to Earth, Marine and Environmental Sciences (2nd edt). Oxford, Clarendon Press,: 902 pp.
Kuznetsov YuV, 1976. Radiokhronologia okeana (Radiochronology of Ocean). Atomizdat, Moscow: 279 pp. (in Russian).
Kuznetsov VYu, 2008. Radiokhronologia chetvertichnukh otlozheny (Radiochronology of Quaternary deposits). Saint-Petersburg: 312 pp (in Russian).
Kuznetsov VYu and Andreev SI, 1995. Distribution of uranium and thorium isotopes in ferromanganese nodules from the Pacific Ocean. Radiochemistry 37(4): 346–351.
Kuznetsov VYu, Arslanov KhA, Shilov VV and Cherkashev GA, 2002. 230Th-excess and 14C dating of pelagic sediments from the hydrothermal zone of the North Atlantic. Geochronometria 21: 33–40.
Kuznetsov V, Cherkashev G, Lein A, Shilov V, Maksimov F, Arslanov Kh, Stepanova T, Baranova N, Chernov S and Tarasenko D, 2006. 230Th/U dating of massive sulfides from the Logatchev and Rainbow hydrothermal fields (Mid-Atlantic Ridge). Geochronometria 25: 51–56.
Kuznetsov VYu, Cherkashev GA, Bel’tenev VE, Lein AYu, Maximov FE, Shilov VV and Stepanova TV, 2007. The 230Th/U dating of sulfide ores in the ocean: Methodical possibilities, measurement results and perspectives of application. Doklady Earth Sciences 417(8): 1202–1205, DOI: 10.1134/S1028334X07080156.
Lalou C and Brichet E, 1982. Ages and implications of East Pacific Rise sulphide deposits at 21°N. Nature 300: 169–171, DOI: 10.1038/300169a0.
Lalou C and Brichet E, 1987. On the isotopic chronology of submarine hydrothermal deposits. Chemical Geology 65: 197–207.
Lalou C, Reyss LG, Brichet E, Krasnov S, Stepanova T, Cherkashev G and Markov V, 1988. Chronology of a recently discovered hydrothermal field at 14°45′N, Mid Atlantic Ridge. Earth and Planetary Science Letters 144: 483–490, DOI: 10.1016/S0012-821X(96)00190-2.
Lalou C, Reyss JL, Brichet E, Arnold M, Thompson G, Fouquet Y and Rona PA, 1993. New age data for MAR hydrothermal sites: TAG and Snakepit chronology revisited. Journal of Geophysical Research 98: 9705–9713, DOI: 10.1029/92JB01898.
Lalou C, Reyss J-L, Brichet E, Rona P.A, and Thompson G, 1995. Hydrothermal activity on a 105-year scale at a slow-spreading ridge. TAG hydrothermal field, Mid-Atlantic Ridge 26°N. Journal of Geophysical Research 100: 17855–17862, DOI: 10.1029/95JB01858.
Lalou C, Reyss JL, Brichet E, Krasnov S, Stepanova T, Cherkashev G and Markov V, 1996. Initial chronology of a recently discovered hydrothermal field at 14°45′N, Mid-Atlantic Ridge. Earth and Planetary Science Letters 144: 483–490, DOI: 10.1016/S0012-821X(96)00190-2.
Lalou C, Reyss J-L, Brichet E, 1998. Age of sub-bottom sulfide samples at the TAG active mound. In: Herzig PM, Humphris SE, Miller DJ, and Zierenberg RA, Eds., Proceedings of the Ocean Drilling Program, Scientific Results 158: 111–117.
You C-F and Bickle M, 1998. Evolution of an active sea-floor massive sulphide deposit. Nature 394: 668–671, DOI: 10.1038/29279.
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