Results 21 to 30 of about 536,264 (226)

Multistage Neoarchean magma genesis in the Bundelkhand Craton, India: Evidence from whole-rock elemental and Nd isotopic study of mafic magmatic enclaves and granitoids

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, Iftikhar Ahmad, M.E.A. Mondal, Waliur Rahaman   +3 more
doaj   +1 more source

Analogue experiments to investigate magma mixing within dykes. [PDF]

Bull Volcanol
Abstract Multiple magmas residing in plumbing systems that feed fissure eruptions can physically and chemically interact and mix during storage, transport, and eruption. The extent and success of such mixing ultimately control the physical properties (e.g.
Havard TA, Jones TJ, Kavanagh JL.
europepmc   +3 more sources

Simulating microstructure evolution during passive mixing [PDF]

, 2011
The prediction of microstructure evolution during passive mixing is of major interest in order to qualify and quantify mixing devices as well as to predict the final morphology of the resulting blend.
CHINESTA SORIA, Francisco, Chinesta, Francisco, MAITREJEAN, Guillaume, Amine Ammar, Francisco Chinesta, AMMAR, Amine, Guillaume Maitrejean   +6 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, Kangxing Shi, Da Zhang, Changming Wang, Bin Du, Qi Chen, Lei Gao   +6 more
doaj   +1 more source

Compositional Variation of Amphiboles During Magma Mixing: A Case Study of Huangyangshan A-Type Granite in Kalamaili Metallogenic Belt, East Junggar, China

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, Chenyang Ye, Chenyang Ye, Chenyang Ye, Chenyang Ye, Yonggang Feng, Yonggang Feng, Ruxiong Lei, Ruxiong Lei, Gaoxue Yang, Gaoxue Yang   +10 more
doaj   +1 more source

Evaluating Complex Magma Mixing via Polytopic Vector Analysis (PVA) in the Papagayo Tuff, Northern Costa Rica: Processes that Form Continental Crust

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, Thomas A. Vogel, Lina C. Patino, David W. Szymanski   +3 more
doaj   +1 more source

Numerical simulation of convection and mixing in magma chambers replenished with CO2-rich magma

, 2006
Magma convection and mixing, and periodic refilling, commonly occur in magma chambers.We show here that the presence of CO2 in the refilling magma is a very efficient mean of inducing buoyant-driven plume rise and large scale convection.
Longo, A., Vassalli, M., Barsanti, M., Papale, P.   +3 more
core   +2 more sources

A System Dynamics Approach to Understanding the deep Magma Plumbing System Beneath Dominica (Lesser Antilles)

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, Hélène Balcone-Boissard, Daniel Joseph Morgan, Georges Boudon, Caroline Martel, Léa Ostorero   +5 more
doaj   +1 more source

Two‐Stage Mafic‐Felsic Magma Interactions and Related Magma Chamber Processes in the Arc Setting: An Example From the Enclave‐Bearing Calc‐Alkaline Plutons, Chinese Altai

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, Min Sun, Guochun Zhao, Yunying Zhang, Jinlong Yao   +4 more
doaj   +1 more source

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, Scaillet, Bruno, Arbaret, Laurent, Andújar, Joan, Champallier, Rémi   +4 more
openaire   +2 more sources