Results 21 to 30 of about 571,249 (212)
Geosystems and Geoenvironment, 2022 Using field, petrography and geochemistry (elemental and Nd isotopic compositions), an integrated study has been carried out on the Neoarchean lithologies comprising mafic magmatic enclaves (MMEs) and undeformed granitoids of the Bundelkhand Craton ...
Mir Md Ramiz +3 more
doaj +1 more source
The incrementally zoned Miocene Ayagaures ignimbrite (Gran Canaria, Canary Islands) [PDF]
, 2010 The 20–25 m thick trachyphonolitic Ayagaures ignimbrite cooling unit [(AY); 11.8 Ma] exposed over 250 km2 (onshore volume ca. 4.5 km3 DRE) is the uppermost and most voluminous cooling unit of the Middle Fataga Formation (MFF), part of the Fataga Group ...
Hans-Ulrich Schmincke +5 more
core +1 more source
Crust-Mantle Interaction Controls the Formation of High-Mg Adakitic Rocks: Evidence from Early Cretaceous Intrusive Complexes in Luxi Terrane, North China Craton [PDF]
Lithosphere, 2023 High-Mg adakite rocks preserve crucial information about the crust-mantle interactions during the magma evolution. The Luxi Terrane, southeastern North China Craton, stores a set of Early Cretaceous high-Mg adakite rocks; nevertheless, their petrogenesis
Songyan Liu +6 more
doaj +1 more source
Geosciences, 2013 Over the last forty years, research has revealed the importance of magma mixing as a trigger for volcanic eruptions, as well as its role in creating the diversity of magma compositions in arcs.
Guillermo E. Alvarado +3 more
doaj +1 more source
Frontiers in Earth Science, 2021 The Huangyangshan A-type granitic pluton, distributed along the thrust fault in the Kalamaili region of East Junggar, Xinjiang, China, consists of alkaline granite containing abundant dioritic enclaves that formed via magma mixing.
Chenyang Ye +10 more
doaj +1 more source
Rheology and textures of experimental 3-phase magma mixing
, 2012 International audienceHybrid rocks, enclaves, crystal dispersion and zonation (...) are common natural features caused by magma mixing. Such a process has been suggested to trigger volcanic eruptions, during or soon after the replenishment of a ...
Laumonier, Mickaël +2 more
core +5 more sources
Experimental mixing of hydrous magmas [PDF]
Chemical Geology, 2015 Deformation experiments involving hydrous magmas of different compositions (basalt and haplotonalite) have been performed in a Paterson press at 300 MPa, in the temperature range 600 °C–1020 °C, with water-saturated melts, during 2–4 h. Prior to deformation, the two end-member magmas were annealed at either 950 °C or 1000 °C, yielding magmas with ...
Laumonier, Mickaël +4 more
openaire +2 more sources
Frontiers in Earth Science, 2020 To understand the dynamics of magmatic systems, one must first seek to characterize the time-dependent behavior of magma storage and ascent. Herein, we do this through a combination of the Crystal System Approach and careful study of Fe-Mg interdiffusion
Clara Solaro +5 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2021 A systematic data set of petrography, mineralogy, geochronology, and geochemistry is reported for typical arc granitoids and associated mafic microgranular enclaves (MME) from the Chinese Altai, Central Asian Orogenic Belt.
Xing Cui +4 more
doaj +1 more source
Two Distinct Magma Storage Regions at Ambrym Volcano Detected by Satellite Geodesy
Geophysical Research Letters, 2023 The flux of eruptible magma into a magmatic plumbing system influences eruption size and timing. If magma transfer is possible between two hydraulically‐connected magma lenses, system destabilization can tap a larger magma volume than stored in any one ...
T. Shreve +4 more
doaj +1 more source