Results 241 to 250 of about 6,943 (279)

No Oceanic Plateau— No Caribbean Plate? The Seminal Role of an Oceanic Plateau in Caribbean Plate Evolution

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, Rosalind V. White, Patricia M. E. Thompson, John Tarney, Andrew D. Saunders   +4 more
openaire   +1 more source

Continental Accretion: From Oceanic Plateaus to Allochthonous Terranes

Science, 1981
Some 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
openaire   +2 more sources

Ocean ambient noise on the Chukchi Plateau and its environmental correlates

Marine Environmental Research, 2023
Conducting research on ocean ambient noise under different sea ice conditions is highly important for the comprehension of the rapidly changing Arctic. We present the first results of ambient noise and its relationship to environmental forcing during the open-water, ice transition and ice-covered periods on the Chukchi Plateau. The ambient noise level (
Xuejing Mo, Hongtao Wen, Yanming Yang, Hongtao Zhou, Jingwei Yin, Xiao Han, Hongxia Chen, Hailin Ruan   +7 more
openaire   +2 more sources

Anomalous crustal structures in ocean basins: Continental fragments and oceanic plateaus

Earth and Planetary Science Letters, 1980
Plateau-like features in ocean basins exhibit crustal structures which differ markedly from the relatively simple, three-layer model which applies to most of the oceanic crust. While some plateaus are known or thought to be fragments of continental crust (e.g. Rockall Bank, Lord Howe Rise), others appear to be of oceanic origin (e.g.
R.L. Carlson, N.I. Christensen, R.P. Moore   +2 more
openaire   +1 more source

Biogenic aerosol in central East Antarctic Plateau as a proxy for the ocean-atmosphere interaction in the Southern Ocean

Science of The Total Environment, 2022
Ten years of data of biogenic aerosol (methane sulfonic acid, MSA, and non-sea salt sulfate, nssSO42-) collected at Concordia Station in the East Antarctic plateau (75° 06' S, 123° 20' E) are interpreted as a function of the Southern Annular Mode (SAM), Chlorophyll-a concentration (Chl-a; a proxy for phytoplankton biomass), sea ice extent and area.
Silvia Becagli, Christian Marchese, Laura Caiazzo, Virginia Ciardini, Luigi Lazzara, Giovanna Mori, Caterina Nuccio, Claudio Scarchilli, Mirko Severi, Rita Traversi   +9 more
openaire   +3 more sources

Influence of geometry and eclogitization on oceanic plateau subduction

Earth and Planetary Science Letters, 2013
Abstract Subduction is driven by the negative buoyancy of the slab, which depends on both the temperature and composition of the lithospheric plate. In the case of subduction of an oceanic plateau, larger thickness of the lower-density crust and harzburgite layers can locally decrease the negative buoyancy available to drive subduction.
Pierre-André Arrial, Magali I. Billen
openaire   +1 more source

The role of oceanic plateau subduction in the Laramide orogeny

Nature Geoscience, 2010
The cause of the Laramide phase of mountain building remains uncertain. Conceptual models implicate the subduction of either ocean ridges or conjugates of the buoyant Hess or Shatsky oceanic plateaux. Independent verification of these models has remained elusive, because the putative ridges or plateaux are no longer at the Earth’s surface.
Liu, Lijun, Gurnis, Michael, Seton, Maria, Saleeby, Jason, Müller, R. Dietmar, Jackson, Jennifer M.   +5 more
openaire   +2 more sources

Oceanic plateaus as meteorite impact signatures

Nature, 1982
The oceanic plateaus are an enigmatic set of deep ocean structures1–5. Could these be signatures of ancient meteorite impacts? While numerous confirmed and suspected impact sites, ranging in age from Precambrian to Recent, have been identified on the continents6, none has thus far been identified in the oceans.
openaire   +1 more source

Was the Laramide orogeny related to subduction of an oceanic plateau?

Nature, 1981
Numerous models have been presented to explain the late Cretaceous/early Cenozoic Laramide orogeny, which affected the foreland region of the western cordillera within the US1. The most attractive models invoke low-angle subduction2–4, which can develop for various reasons5,6.
Richard F. Livaccari, Kevin Burke, A. M. C. Şengör   +2 more
openaire   +1 more source

Oceanic plateaus, the fragmentation of continents, and mountain building

Journal of Geophysical Research: Solid Earth, 1982
Many anomalous rises in today's oceans may be submerged continental fragments detached from previous continents, ancient island arcs, or basaltic piles formed by hot spots and spreading centers. These rises are embedded in their respective moving oceanic plates and are fated to be consumed at active margins.
Amos Nur, Zvi Ben‐Avraham
openaire   +1 more source