Discovery of New Hydrothermal Ore Fields “Korallovoe” (13°07′ N) and “Molodezhnoe” (13°09′ N) in the Middle Atlantic Ridge

A. M. Makoviz; Маковиз А. М.; A. S. Bich; Бич А. С.; M. S. Stepanova; Степанова М. С.; D. V. Kaminsky; Каминский Д. В.; V. L. Skakovsky; Скаковский В. Л.; I. G. Dobretsova; Добрецова И. Г.; D. A. Kryukov; Крюков Д. А.; Z. V. Zhidkov; Жидков З. В.; R. V. Shipov; Шипов Р. В.; E. V. Narkevsky; Наркевский Е. В.; G. A. Cherkashev; Черкашев Г. А.; I. A. Sergeeva; Сергеева И. А.; A. E. Musatov; Мусатов А. Е.; A. S. Savin; Савин А. С.

doi:10.31857/S0030157423010070

Discovery of New Hydrothermal Ore Fields “Korallovoe” (13°07′ N) and “Molodezhnoe” (13°09′ N) in the Middle Atlantic Ridge

Authors: Makoviz A.M.¹^,2, Bich A.S.³, Stepanova M.S.³, Kaminsky D.V.¹, Skakovsky V.L.¹, Dobretsova I.G.¹, Kryukov D.A.¹, Zhidkov Z.V.¹^,4, Shipov R.V.¹, Narkevsky E.V.¹, Cherkashev G.A.³^,2, Sergeeva I.A.¹^,2, Musatov A.E.¹, Savin A.S.¹
Affiliations:
1. Polar Marine Exploration Expedition
2. St. Petersburg State University, Institute of Earth Sciences
3. Acad. Gramberg All-Russia Scientific Research Institute for Geology and Mineral Resources of the Ocean
4. Zoological Institute of Russian Academy of Sciences
Issue: Vol 63, No 1 (2023)
Pages: 124-134
Section: Морская геология
URL: https://journal-vniispk.ru/0030-1574/article/view/136229
DOI: https://doi.org/10.31857/S0030157423010070
EDN: https://elibrary.ru/AHDAWN
ID: 136229

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract
About the authors
References
Supplementary files
Statistics

Abstract

During the 41th scientific cruise of the R/V “Professor Logachev” in 2019, two new ore fields were discovered within the Russian exploration area of the Mid-Atlantic Ridge. The “Korallovoye” ore field is located in the middle part of the rift valley ridge and lies on a gentle slope in the depth range of 2800–2850 m. The “Molodezhnoye” ore field is located at a distance of approximately 5 km northeast of the “Korallovoye” field and lies on a less steeper section of the slope between 3500 and 3550 m in depth. The “Korallovoye” and “Molodezhnoye” fields are confined to the outcrop of a gabbro-peridotite massif on the western side of the Mid-Atlantic Rift valley. The total number of discovered ore fields in the Russian exploration area has been increased to 14 sites.

Keywords

Mid-Atlantic ridge, Russian exploration area, hydrothermal ore field, hydrothermal ore formation

References

Бельтенев В.Е., Лазарева Л.И., Черкашев Г.А. и др. Новые гидротермальные рудные поля на Срединно-Атлантическом хребте: Юбилейное (20°09′ с.ш.) и Сюрприз (20°45.4′ с.ш.) // Докл. РАН. 2017. Т. 476. № 3. С. 305–310.
Порошина И.М., Черкашев Г.А. Морфотектоническое строение и сегментация северной приэкваториальной части Срединно-Атлантического хребта (Российский Разведочный Район) // Мировой океан. Т. III. Твердые полезные ископаемые и газовые гидраты в океане / Под ред. Лобковского Л.И., Черкашева Г.А. М.: Научный мир, 2018. С. 60–75.
Черкашев Г.А. Степанова Т., Андреев С. и др. Рудные объекты в пределах Российского Разведочного Района в северной приэкваториальной части Срединно-Атлантического хребта // Мировой океан. Т. III. Твердые полезные ископаемые и газовые гидраты в океане / Под ред. Л.И. Лобковского, Г.А. Черкашева. М.: Научный мир, 2018. С. 90–121.
Черкашев Г.А., Иванов В.Н., Бельтенев В.Е. и др. Сульфидные руды северной приэкваториальной части Срединно-Атлантического хребта // Океанология. 2013. Т. 53 № 5. С. 680–693.
Escartín J., Smith D.K., Cann J. et al. Central role of detachment faults in accretion of slow-spreading oceanic lithosphere // Nature. 2008. V. 455(7214). P. 790–794.
Fouquet Y., Cambon P., Etoubleau J. et al. Geodiversity of hydrothermal processes along the Mid-Atlantic Ridge and ultramafic hosted mineralization: a new type of oceanic Cu–Zn–Co–Au volcanogenic massive sulfide deposit // Diversity of submarine hydrothermal systems on slow spreading ocean ridges. Geophys. Monogr. 2010. V. 188. P. 297–320.
Gage J., Tyler P. Deep-Sea Biology: A Natural History of Organisms at the Deep-Sea Floor. Cambridge: Cambridge University Press, 1991. 520 p.
German C.R., Petersen S., Hannington M.D. Hydrothermal exploration of mid-ocean ridges: Where might the largest sulfide deposits be forming? // Chemical Geology. 2016. V. 420. P. 114–126.
MacLeod C.J., Searle R.C., Murton B.J. et al. Life cycle of oceanic core complexes // Earth and Planetary Science Letters. 2009. V. 287. P. 333–344.
Smith D.K., Escartín J., Schouten H. et al. Fault rotation and core complex formation: Significant processes in seafloor formation at slow-spreading mid-ocean ridges (Mid-Atlantic Ridge, 13°–15° N) // Geochemistry, Geophysics, Geosystems. 2008. V. 9 (3). P. 1–23.
Smith D.K., Cann J.R., Escartín J. Widespread active detachment faulting and core complex formation near 13° N on the Mid-Atlantic Ridge // Nature. 2006. V. 442 (7101). P. 440–443.