Results 91 to 100 of about 29,724 (300)
Widening of the Andes: an interplay between subduction dynamics and crustal wedge tectonics [PDF]
Earth-Science Reviews, Elsevier, In press, 2020 Shortening of the continental lithosphere is generally accommodated by the growth of crustal wedges building above megathrusts in the mantle lithosphere. We show that the locus of shortening in the western margin of South America has largely been controlled by the geometry of the slab.
arxiv
The Episodically Buckling and Collapsing Continental Crust in Subduction Zones [PDF]
arXiv, 2020 We discover a remarkable correlation between the inter-tremor time interval and the slenderness ratio of the overriding plate in subduction zones all over the world. In order to understand this phenomenon better, we perform numerical simulations of 3D deformation.
arxiv
Boreas, EarlyView.This study presents a detailed investigation of the Velika Vrbica loess‐palaeosol sequence, situated in the Wallachian Basin of northeastern Serbia, with the aim to reconstruct palaeoenvironmental changes spanning Marine Isotope Stages (MIS) 3 to 1. Using optically stimulated luminescence (OSL) dating, low field magnetic susceptibility (χlf), and mass ...
Zoran M. Perić +6 more
wiley +1 more source
Ophiolites in the Central Asian Orogenic Belt record Cambrian subduction initiation processes
Communications Earth & EnvironmentSubduction initiation remains elusive because no present example exists. Ophiolites formed over nascent subduction zones in the past provide the key to constraining the processes of subduction initiation.
Mingshuai Zhu +10 more
doaj +1 more source
Green's ${\mathcal J}$-classes and Subduction Classes in Finite Transformation Semigroups [PDF]
arXiv, 2014 We establish the connection between Green's ${\mathcal J}$-classes and the subduction equivalence classes defined on the image sets of an action of a semigroup. The construction of the skeleton order (on subduction equivalence classes) is shown to depend in a functorial way on transformation semigroups and surjective morphisms, and to factor through ...
arxiv
A Cautionary Tale About Not ‘Joining the Dots’ to Infer Anticlockwise P$$ P $$‐T$$ T $$ Paths
Journal of Metamorphic Geology, EarlyView.ABSTRACT Uncertainty surrounds the cause and interpretation of anticlockwise pressure‐temperature (P$$ P $$–T$$ T $$) paths in metamorphic terranes. Here, we focus on the viability of a commonly proposed mechanism—magmatic heat transfer during thickening—using a case study of the Roineabhal terrane in Scotland, where such an anticlockwise P$$ P $$–T ...
Owen Weller, Joseph Benson, Alex Copley
wiley +1 more source
Onset of double subduction controls plate motion reorganisation
Nature CommunicationsFace-to-face double subduction systems, in which two oceanic plates subduct toward each other, are essential elements of plate tectonics. Two subduction zones in such systems are typically uneven in age and their spatially and temporally variable ...
Kuidi Zhang, Jie Liao, Taras Gerya
doaj +1 more source
Journal of Metamorphic Geology, EarlyView.ABSTRACT The pressure–temperature–time (P–T–t) evolution of a metapelitic ultrahigh‐temperature (UHT) granulite from Rundvågshetta (Lützow–Holm Complex, East Antarctica) and chemical evolution of partial melt during the prograde metamorphism up to UHT metamorphism are studied in detail.
Kota Suzuki +6 more
wiley +1 more source
Journal of Metamorphic Geology, EarlyView.ABSTRACT This study presents a comprehensive examination of exceptionally preserved eclogites from the Baie Verte Peninsula, Newfoundland Appalachians, which display a high‐temperature overprint, thus offering insights into the metamorphic evolution and exhumation mechanisms of such terrains. Through an integrated approach combining field observations,
Ludovico G. Scorsolini +4 more
wiley +1 more source