Results 21 to 30 of about 9,710 (277)
The consequences of crustal melting in continental subduction [PDF]
Lithosphere, 2009 Orogens grow in part by thrusting and burial of continental crust, in some cases, into the mantle by continental subduction. Deeply buried continental crust may partially melt during ascent, adding magma to the overlying continental crust, creating a continental plateau, and accounting for the large melt volumes observed in modern and ancient orogens ...
Donna L. Whitney +2 more
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Geophysical Research Letters, 2022 The mechanisms driving crustal deformation and uplift of orogenic plateaus are fundamental to continental tectonics. Large‐scale crustal flow has been hypothesized to occur in eastern Tibet, but it remains controversial due to a lack of geologic evidence.
Fangyang Hu +4 more
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Granite magmatism and mantle filiation [PDF]
European Journal of MineralogyCurrent granite magma generation models essentially reduce to two groups: (1) intra-crustal melting and (2) basaltic origin. A mixed, crustal, and basaltic origin and therefore a mantle filiation has been proposed for most granite magma types.
M. Pichavant +3 more
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Geochemistry, Geophysics, Geosystems, 2023 In the Mississippian Matachel small volcanic field of the Ossa‐Morena Zone (southern Iberian Massif) outpoured basic‐intermediate lavas exhibit geochemical characteristics of Low‐Ti continental tholeiites and calc‐alkaline lavas.
F. Sarrionandia +5 more
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A joint geochemical–geophysical record of time-dependent mantle convection south of Iceland [PDF]
, 2014 The North Atlantic V-Shaped Ridges (VSRs) provide a spatially extensive and clear record of unsteady mantle convective circulation over >40 My>40 My.
Jones, S.M.; id_orcid +16 more
core +1 more source
pyMelt: An extensible Python engine for mantle melting calculations
Volcanica, 2022 Modelling the melting of Earth’s mantle is crucial for understanding the distribution of volcanic activity on Earth and for testing models of mantle convection and mantle lithological heterogeneity.
Simon Matthews +2 more
doaj +1 more source
The influence of melting and melt drainage on crustal rheology during orogenesis [PDF]
Journal of Geophysical Research: Solid Earth, 2014 AbstractPartial melting significantly weakens crustal rocks by introducing a low‐viscosity liquid phase. However, near‐concomitant melt drainage can remove this weak phase, potentially reversing the rheological effects such that the strength of a specific lithology depends on when the prograde pressure‐temperature path intersects a melting reaction ...
Johann F. A. Diener, Åke Fagereng
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ON HEAT SOURCE IN SUBDUCTION ZONE
Геодинамика и тектонофизика, 2021 The subduction of an oceanic plate is studied as the motion of a high-viscosity Newtonian fluid. The subducting plate spreads along the 670-km depth boundary under the influence of oppositely directed horizontal forces. These forces are due to oppositely
A. A. Kirdyashkin +3 more
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Geochemistry and Geodynamic setting of Crustal sequence in Shahini ophiolitic complex, NW of Kamyaran [PDF]
پترولوژی, 2019 The Shahini ophiolitic complex is located west of Kamyaran as a ring connection between the Kermanshah and Kurdistan ophiolites, outcropped along the Zagros and Neotethys suture zone, in western Iran.
Bahman Rahimzadeh +3 more
doaj +1 more source
Trace element and isotope constraints on crustal anatexis by upwelling mantle melts in the North Atlantic Igneous Province: an example form the Isle of Rum, NW Scotland [PDF]
, 2009 Sr and Nd isotope ratios, together with lithophile trace elements, have been measured in a representative set of igneous rocks and Lewisian gneisses from the Isle of Rum in order to unravel the petrogenesis of the felsic rocks that erupted in the early ...
C. HENRY EMELEUS +14 more
core +1 more source