Results 21 to 30 of about 6,943 (279)

Geodynamics of oceanic plateau and plume head accretion and their role in Phanerozoic orogenic systems of China [PDF]

open access: yes, 2015
We present three 3D numerical models of deep subduction where buoyant material from an oceanic plateau and a plume interact with the overriding plate to assess the influence on subduction dynamics, trench geometry, and mechanisms for plateau accretion ...
Miller, Meghan   +6 more
core   +3 more sources

Initial opening of the Eurasian Basin, Arctic Ocean

open access: yesFrontiers in Earth Science, 2016
Analysis of the transition from the NE Yermak Plateau into the oceanic Eurasian Basin sheds light on the Paleocene formation of this Arctic basin. Newly acquired multichannel seismic data with a 3600 m long streamer shot during ice-free conditions ...
Kai Berglar   +4 more
doaj   +1 more source

Regional Geophysics of the Caribbean and Northern South America: Implications for Tectonics

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The Caribbean plate is an enclosed oceanic basin whose formation and evolution are controversial. In the most commonly accepted model, the Caribbean plate is mainly composed of the Caribbean Large Igneous Province (CLIP) and the buoyant characteristic of
Carol V. Barrera‐Lopez   +2 more
doaj   +1 more source

Margin-to-Margin Seafloor Spreading in the Eastern Gulf of Aden: A 16 Ma-Long History of Deformation and Magmatism from Seismic Reflection, Gravity and Magnetic Data

open access: yesFrontiers in Earth Science, 2021
In this paper we present and analyze spreading-parallel seismic transects that image the oceanic crust in the eastern Gulf of Aden, from the Oman to the Socotra margins, across the active Sheba mid-oceanic ridge and between the Socotra-Hadbeen and ...
Morgane Gillard   +3 more
doaj   +1 more source

Volcanology and geochemistry of the Cretaceous volcaniclastic deposits and basalts from Ori Massif, Shatsky Rise Oceanic Plateau [PDF]

open access: yes, 2017
This study enhanced our understanding of the origin and evolution of Ori Massif, Shatsky Rise Oceanic Plateau. Key findings are: 1. Volcaniclastic deposits were formed by Surtseyan style phreatomagmatic activity, suggesting that the summit of Ori Massif ...
Romanova, Irina
core   +1 more source

Wedge‐Shaped Southern Indian Continental Margin Without Proper Weakness Hinders Subduction Initiation

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The closure of a subduction zone with continental terrane collision and accretion is generally thought to be followed by the initiation of a new subduction zone in the neighboring oceanic plate, which is suggested to happen repeatedly during the ...
Xinyi Zhong, Zhong‐Hai Li
doaj   +1 more source

Trophodynamics of Southern Ocean pteropods on the southern Kerguelen Plateau [PDF]

open access: yesEcology and Evolution, 2019
AbstractPteropods are a group of small marine gastropods that are highly sensitive to multiple stressors associated with climate change. Their trophic ecology is not well studied, with most research having focused primarily on the effects of ocean acidification on their fragile, aragonite shells.
Christine K. Weldrick   +3 more
openaire   +3 more sources

Geochemistry and petrogenesis of Cretaceous oceanic plateau lavas in eastern Jamaica [PDF]

open access: yes, 2008
Basaltic lavas of Turonian to Coniacian age belonging to the Bath-Dunrobin Formation occur with intercalated island arc tuffs in the south of the Blue Mountain inlier, have been interpreted as being derived from the Caribbean oceanic plateau.
Hastie, Alan R.   +3 more
core   +3 more sources

Characterization and tectonic implications of Mesozoic-Cenozoic oceanic assemblages of Costa Rica and Western Panama

open access: yesGeologica Acta, 2006
Characterization and tectonic implications of Mesozoic-Cenozoicoceanic assemblages of Costa Rica and Western PanamaThe Pacific face of Costa Rica and western Panama has been extensively studied because of the wide occur-rence of oceanic assemblages.
P. DENYER, P. O. BAUMGARTNER, E. GAZEL
doaj   +1 more source

Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise

open access: yesCommunications Earth & Environment, 2022
The oceanic plateau of the Rio Grande Rise, South Atlantic, was formed by mantle plume- and rift-related volcanism and shows no evidence of a continental crustal component, according to petrological and geochemical analyses of dredged volcanic rocks.
Patrick A. Hoyer   +6 more
doaj   +1 more source

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