Results 41 to 50 of about 235,444 (202)

Mechanical decoupling of high-pressure crustal units during continental subduction. [PDF]

open access: yes, 2008
International audienceThe mechanics of the transition from continental subduction toward upper crustal nappe stacking is still poorly understood and is studied here through a 2D thermal and strength numerical modelling of a subducted passive margin ...
Brun, Jean-Pierre   +3 more
core   +5 more sources

Anatomy and kinematic evolution of an ancient passive margin involved into an orogenic wedge (Western Southern Alps, Varese area, Italy and Switzerland)

open access: yesSwiss Journal of Geosciences, 2022
We make use of own geological mapping, interpretations of seismic reflection profiles and deep geophysical data to build a lithospheric-scale cross-section across the European Western Southern Alps (Varese area) and to model a progressive restoration ...
Emanuele Scaramuzzo   +4 more
doaj   +1 more source

On the origin of the North Pacific arcs [PDF]

open access: yes, 2004
We present a new hypothesis that relates global plate tectonics to the formation of marginal basins, island arcs, spreading ridges and arc-shaped mountain belts around the North Pacific Ocean.
Fornós, Joan J.   +3 more
core   +3 more sources

Volcanic passive margins

open access: yesComptes Rendus. Géoscience, 2005
Compared to non-volcanic ones, volcanic passive margins mark continental break-up over a hotter mantle, probably subject to small-scale convection. They present distinctive genetic and structural features. High-rate extension of the lithosphere is associated with catastrophic mantle melting responsible for the accretion of a thick igneous crust ...
openaire   +1 more source

Classification and hydrocarbon distribution of passive continental margin basins

open access: yesPetroleum Exploration and Development, 2016
Sixty-six passive continental margin basins around the world were compared comprehensively from the aspect of seismogeology on the basis of plate tectonics.
Zhixin WEN   +6 more
doaj   +1 more source

Slab Subduction and Pull Link Magmatism at Active and Passive Continental Margins

open access: yesGeophysical Research Letters
Subduction leads to voluminous arc magmatism at active continental margins; however, the potential far‐field geodynamic connections with coeval magmatism along opposing passive margins, are rarely investigated.
Li‐Qun Dai   +5 more
doaj   +1 more source

Rifting and arc-related early Paleozoic volcanism along the North Gondwana margin: geochemical and geological evidence from Sardinia (Italy) [PDF]

open access: yes, 2012
Three series of volcanic rocks accumulated during the Cambrian to Silurian in the metasediment-dominated Variscan basement of Sardinia. They provide a record of the changing geodynamic setting of the North Gondwana margin between Upper Cambrian and ...
BUZZI L   +3 more
core   +1 more source

Passive margins in accreting Archaean archipelagos signal continental stability promoting early atmospheric oxygen rise

open access: yesNature Communications, 2022
This research reports a 2.5-billion year-old passive margin formed in accreting archipelagos, highlighting the contribution of early continent formation and the relationship between continental stabilization and early atmospheric oxygen rise.
Yaying Peng   +7 more
doaj   +1 more source

Petroleum geology and resources in West Africa: An overview

open access: yesPetroleum Exploration and Development, 2008
The passive continental margin of West Africa is becoming an attractive area for hydrocarbon exploration, and it experienced four tectonic stages, i.e. pre-rift, syn-rift, transitional and post-rift (drifting) stages.
Jian-Ping LIU   +5 more
doaj   +1 more source

Pre-Orogenic Tectonostratigraphic Evolution of the European Distal Margin-Alpine Tethys Transition Zone in High-Pressure Units of the Southwestern Alps

open access: yesGeosciences, 2022
Geological mapping, stratigraphic observations, and U/Pb dating allow reconstructing the pre-orogenic setting of the transition zone between the distal European passive margin and the Alpine Tethys in the southwestern Alps.
Gianni Balestro   +4 more
doaj   +1 more source

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