Results 141 to 150 of about 365,115 (188)
Earth-Science Reviews, 2010 The Caribbean oceanic plateau formed in the Pacific realm when it erupted onto the Farallon plate from the Galapagos hotspot at ∼ 90 Ma. The plateau was subsequently transported to the northeast and collided with the Great Arc of the Caribbean thus ...
Andrew C. Kerr, Alan R Hastie
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Oceanic crust and Moho of the Pacific Plate in the eastern Ogasawara Plateau region
Island Arc, 2007 To show the structure of oceanic crust and Moho around the eastern Ogasawara Plateau, we have analyzed industry-standard two-dimensional multichannel seismic reflection data.
Yasuyuki Nakamura, Takeshi Tsuji
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The fate of oceanic plateaus: subduction versus accretion
Geophysical Journal International, 2022 SUMMARYOceanic plateaus (or aseismic ridges) can be either subducted into the deep mantle, or accreted onto the overriding plate. Furthermore, some oceanic plateaus can change subduction mode from steep to flat-slab subduction. What factors control the fate of oceanic plateaus during subduction remain enigmatic.
Andrew V. Zuza, Bo Wan, Zhiyong Yan
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Oceanic Plateau Formation Implied by Ontong Java Plateau, Kerguelen Plateau and Shatsky Rise
Journal of Ocean University of China, 2019Oceanic plateaus are a significant type of large igneous provinces in the oceans, providing insights to regional tectonic events and mantle behavior. The three world’s largest oceanic plateaus, the Ontong Java Plateau, the Kerguelen Plateau and the Shatsky Rise, are representatives in displaying extraordinary fluxes of magma from mantle to lithosphere.
Jinchang Zhang, Yiming Luo
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Mascarene Plateau, Western Indian Ocean
Geological Society of America Bulletin, 1967The submarine Mascarene Plateau, lying east and northeast of Madagascar in the west central Indian Ocean, extends as a faulted composite arc for 2300 km, from the Precambrian granitic “micro-continent” of Seychelles Bank southward through the coral–reef–capped volcanic structures (?) of Saya de Malha, Nazareth, and Cargados Carajos banks to the faulted
R. L. FISHER +2 more
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Central Tibetan Meso-Tethyan oceanic plateau
Lithos, 2014Abstract We report the occurrences of the remnants of a Meso-Tethyan oceanic plateau, encompassing an area of ~ 2 × 105 km2 in central Tibet. The plateau remnants include large volumes of pillow basalt formed largely by emergent to subaerial eruption, minor ultramafic intrusives and cumulates, exotic blocks of limestone, radiolarian chert, graywacke,
Kai-Jun Zhang, Bin Xia, Weiliang Liu
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Oceanic plateaus: Problematic plumes, potential paradigms
Chemical Geology, 2007Oceanic plateaus are vast areas (N2—105 km2) of thicker than average oceanic crust (up to 38 km) that typically are elevated 2-3 km above the surrounding seafloor. Because of their thick, relatively high-standing crust, portions of oceanic plateaus can accrete to convergent continental margins and thus have contributed to continental growth over time ...
Andrew C. Kerr, John J Mahoney
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Are oceanic plateaus sites of komatiite formation?
Geology, 1991During Cretaceous and Tertiary time a series of oceanic terranes were accreted onto the Pacific continental margin of Colombia. The island of Gorgona is thought to represent part of the most recent, early Eocene, terrane-forming event. Gorgona is remarkable for the occurrence of komatiites of middle Cretaceous age, having MgO contents up to 24%.
STOREY, M +3 more
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2003
Abstract Oceanic plateaus are areas of elevated and anomalously thick oceanic crust that are believed to form by enhanced partial melting in a mantle plume that is hotter than ambient upper asthenosphere. They are regarded as the oceanic equivalent of continental flood-basalt provinces.
Andrew C. Kerr +4 more
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Abstract Oceanic plateaus are areas of elevated and anomalously thick oceanic crust that are believed to form by enhanced partial melting in a mantle plume that is hotter than ambient upper asthenosphere. They are regarded as the oceanic equivalent of continental flood-basalt provinces.
Andrew C. Kerr +4 more
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Continental Accretion: From Oceanic Plateaus to Allochthonous Terranes
Science, 1981Some of the regions of the anomalously high sea-floor topography in today's oceans may be modern allochthonous terranes moving with their oceanic plates. Fated to collide with and be accreted to adjacent continents, they may create complex volcanism, cut off and trap oceanic crust, and cause orogenic deformation.
Z, Ben-Avraham, A, Nur, D, Jones, A, Cox
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