New geological and paleontological data on Alba Guyot (Magellan Seamounts, Pacific Ocean) |
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| Authors: | M E Mel’nikov S P Pletnev I A Basov T A Punina T E Sedysheva V D Khudik Yu D Zakharov |
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| Institution: | (1) State Scientific Center Yuzhmorgeologiya, Gelendzhik, Russia;(2) V.I. Il’ichev Pacific Oceanological Institute, Far East Division, Russian Academy of Sciences, Vladivostok, Russia;(3) Geological Institute, Russian Academy of Sciences, Moscow, Russia;(4) Far East Geological Institute, Far East Division, Russian Academy of Sciences, Vladivostok, Russia |
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| Abstract: | New materials obtained in the Pacific during cruises of the R/V Gelendzhik carried out by the State Scientific Center Yuzhmorgeologiya in 2000–2001 make it possible to specify the geologic and geomorphologic structure of Alba Guyot and clarify lithological and paleontological characteristics of lithotectonic rock complexes ranging from the Early Cretaceous to Pleistocene in age. Based on macro-and microfossils from sedimentary rocks several “transgressive” phases are distinguished in the guyot development: Cenomanian-Turonian, late Campanian-Maastrichtian, late Paleocene-middle Eocene, and Late Cenozoic. Finds of Paleogene molluscan and coral remains, together with planktonic foraminifers, imply relatively shallow sedimentation settings on Alba Guyot during the early Paleocene. |
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| Keywords: | Guyots foraminifers nannoplankton corals mollusks Cretaceous Cenozoic Magellan Seamounts Pacific |
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