V.A.
Rashidov1, E.B. Nevredtinov2,
O.B. Selyangin3, Er.B. Nevredtinov2
1Institute
of Volcanic Geology and Geochemistry FED RAS, 683006 Petropavlovsk-Kamchatsky,
Piip blvd., 9
2Regional Museum, 20, Leninskaya
street, Petropavlovsk-Kamchatsky, 683000, Russia
3Research Centr for Geotechnology,
FED RAS, 683002, Petropavlovsk-Kamchatsky, Russia
This paper generalizes both the authors’ personal original data
and all available materials obtained by home and foreign researchers
when studying guyots of the Magellan seamounts.
The Magellan seamounts represent extended arc-like chain of seamounts,
mainly guyots within the middle part of the East-Mariana trough.
The guyots rise above the relatively flat floor of the East-Mariana
trough with depths of about 5500-6000 m to the height up to 4500-4800
m and reach depth level from 1300 to 1200 m.
In 80s-90s of the XX century Magellan seamounts become an object
of permanent studies for both home and foreign researchers. First
of all it is connected with the fact that considerable accumulations
of ferromanganesian crusts and nodules were found at the slopes
and tops of the Magellan seamounts.
Though having some similar features, the guyots of the Magellan
seamounts differ considerably in their geological structure, period
of formation and duration of volcanic activity. They have been
studied rather non-uniformly. The guyots Ita-Maitai, Dalmorgeo,
Roskomnedra, Vulkanolog, TIG, Hemler, seamount Himu were studied
in detail, while guyots Nakhodka, IMGiG, TOI, DVGI, seamounts
D-4 and Golden Dragon are less studied. Guyots MA-3, MA-4, MA-10,
MA-11, MA-27, MA-29, MA-31 and MA-38 are very poorly studied.
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