Oceanic Slab Melting and Mantle Metasomatism [PDF]
Science Progress, 2001 Modern plate tectonic brings down oceanic crust along subduction zones where it either dehydrates or melts. Those hydrous fluids or melts migrate into the overlying mantle wedge trigerring its melting which produces arc magmas and thus additional continental crust. Nowadays, melting seems to be restricted to cases of young (<50 Ma) subducted plates.
Scaillet, Bruno, Prouteau, Gaëlle
core +6 more sources
Seismic Evidence for Possible Slab Melting from Strong Scattering Waves
Terrestrial, Atmospheric and Oceanic Sciences, 2011 Slab melting in young and hot subduction zones has been studied using geochemical observations and thermal modelling, but there are few data from seismic studies to confirm slab melting.
Cheng-Horng Lin
doaj +2 more sources
Numerical Modeling of Melting Processes During Slab Break-off: Insights Into Tectonic Setting for Massif-Type Anorthosites [PDF]
LithosphereThe concept that lithosphere detachment or break-off has long been conceived as a viable mechanism to explain prominent geological phenomena in Earth’s crust and the surface.
Qian Yuan
doaj +2 more sources
Porphyry copper formation driven by water-fluxed crustal melting during flat-slab subduction [PDF]
Nature GeoscienceThe prevailing view of the formation of porphyry copper deposits along convergent plate boundaries involves deep crustal differentiation of metal-bearing juvenile magmas derived from the mantle wedge above a subduction zone.
Thomas N. Lamont +10 more
semanticscholar +4 more sources
Tracking slab surface temperatures with electrical conductivity of glaucophane
Scientific Reports, 2021 Slab surface temperature is one of the key parameters that incur first-order changes in subduction dynamics. However, the current thermal models are based on empirical thermal parameters and do not accurately capture the complex pressure–temperature ...
Geeth Manthilake +3 more
doaj +2 more sources
H2O-rich mantle melting near the slab–wedge interface
Contributions to Mineralogy and Petrology, 2019 To investigate the first melts of the mantle wedge in subduction zones and their relationship to primitive magmas erupted at arcs, the compositions of low degree melts of hydrous garnet lherzolite have been experimentally determined at 3.2 GPa over the ...
T. Grove, C. Till
semanticscholar +2 more sources
On the thermo‐kinetic consequences of slab melting [PDF]
Geophysical Research Letters, 2003 REE abundances in melts produced by partial melting of a hornblende‐bearing eclogite were examined using a dynamic disequilibrium‐melting model and following the P‐T path of a young subducting slab. Model calculations show that melts produced by small degrees of slab melting at 700∼900°C are more likely affected by sluggish kinetics, and have lower La ...
Yan Liang
openaire +2 more sources
Slab melting and slab melt metasomatism in the Northern Andean Volcanic Zone : adakites and high-Mg andesites from Pichincha volcano (Ecuador) [PDF]
Bulletin de la Société Géologique de France, 2002 Abstract Situated in the fore-arc of the Northern Volcanic Zone (NVZ) of the Andes in Ecuador, Pichincha volcano is an active edifice where have been erupted unusual magmas as adakites and high-Mg andesites. The particular geodynamic setting of the ecuadorian margin (i.e.
Joseph Cotten +7 more
openaire +2 more sources
High‐Pressure Transformations and Stability of Ferromagnesite in the Earth's Mantle
Geophysical Monograph Series, Page 105-113., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Eglantine Boulard +2 more
wiley +15 more sources
Slab melting and magma formation beneath the southern Cascade arc [PDF]
, 2016 The processes that drive magma formation beneath the Cascade arc and other warm-slab subduction zones have been debated because young oceanic crust is predicted to largely dehydrate beneath the forearc during subduction.
K. Walowski +4 more
semanticscholar +2 more sources