New data on the morphology and geological structure of the Gramberg Guyot (Magellan Seamounts, Pacific Ocean) |
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| Authors: | M. E. Mel’nikov S. P. Pletnev I. A. Basov T. E. Sedysheva |
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| Affiliation: | (1) State Scientific Center, Federal State Unitary Geological Enterprise Yuzhmorgeologiya, Gelendzhik, Russia;(2) Pacific Institute of Oceanology, Far East Division, Russian Academy of Sciences, Vladivostok, Russia;(3) Geological Institute, Russian Academy of Sciences, Moscow, Russia |
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| Abstract: | The geological-geophysical studies carried out in the western part of the Pacific Ocean by the State Research Center “Yuzhmorgeologiya“ during cruises of the R/V “Gelendzhik” in 2002–2004 yielded new data on the relief of the Gramberg Guyot and its constituting rocks, which appeared to be Early Cretaceous to Pleistocene in age. The analysis of macro- and microfaunal remains in sedimentary rocks made it possible to define the transgressive phases in the development of seamounts (the Cenomanian-Turonian, Late Campanian-Maastrichtian, and Late Cenozoic). The geological development of the Gramberg Guyot is compared with that of other similar structures of the Magellan Seamounts. |
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| Keywords: | guyots Cretaceous Cenozoic Magellan Seamounts West Pacific |
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