Results 61 to 70 of about 5,403,170 (324)

A reactive porous flow control on mid-ocean ridge magmatic evolution [PDF]

, 2016
Mid-ocean ridge basalts (MORB) provide fundamental information about the composition and melting processes in the Earth’s upper mantle. To use MORB to further our understanding of the mantle, is imperative that their crustal evolution is well understood ...
Lissenberg, C. Johan, MacLeod, Christopher J.   +1 more
core   +1 more source

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

Silicic magmas in the Michoacán-Guanajuato Volcanic Field: an overview about plumbing systems, crustal storage and genesis processes

Revista Mexicana de Ciencias Geológicas, 2021
The origin of silicic rocks in the Michoacán-Guanajuato volcanic field (MGVF) has been understudied since the volcanic field attracted the attention of researchers. Using geochemical, petrological and structural data from the literature, here we propose
Giovanni Sosa-Ceballos, Mario Emmanuel Boijseauneau-López, Juan Daniel Pérez-Orozco, Gerardo Cifuentes-Nava, Xavier Bolós, Mathieu Perton, David Simón-Velázquez   +6 more
doaj   +1 more source

Melt infiltration in a crystal mush and pegmatoid formation in the platiniferous Merensky Reef, Bushveld Complex, South Africa

Mineralium Deposita
Giant mafic-ultramafic layered intrusions of Archaean-Proterozoic age are the fossilised remnants of huge injections of silicate magma in the Earth’s crust and are our most important repositories of platinum-group elements. Magmatic PGE-rich ore deposits,
Ben Hayes, Reza Maghdour-Mashhour, L. D. Ashwal, A. J. Smith, H. Ueckermann, Jaco Vermeulen   +5 more
semanticscholar   +1 more source

Which effective viscosity? [PDF]

, 2009
Magmas undergoing shear are prime examples of flows that involve the transport of solids and gases by a separate (silicate melt) carrier phase.
A.R., Bagnold, Best, Bird, Carmichael, Chapman, Chhabra, Cordonnier, D.F, Davis, Davis, Dingwell, Dingwell, Eilers, Einstein, Gidaspow, Happel, Jeffrey, Jenkins, Komar, Leat, Lejeune, M0llera, Marsh, McBirney, Mitchell, Mooney, N. Petford, , Patir, Petford, Petford, Picard, Reynolds, Santra, Scarfe, Shaw, Sherman, Spera, Vigneresse, Wager, Whittington, Zapryanov   +41 more
core   +1 more source

Peralkaline Felsic Magmatism of the Atlantic Islands

Frontiers in Earth Science, 2018
The oceanic-island magmatic systems of the Atlantic Ocean exhibit significant diversity in their respective sizes, ages, and the compositional ranges of their eruptive products.
Adam J. Jeffery, Ralf Gertisser
doaj   +1 more source

Pressurizing Magma Within Heterogeneous Crust: A Case Study at the Socorro Magma Body, New Mexico, USA

Geophysical Research Letters, 2023
Surface deformation plays a key role in illuminating magma transport at active volcanoes, however, unambiguous separation of deep and shallow transport remains elusive.
Grant A. Block, Mousumi Roy, Emily Graves, Ronni Grapenthin   +3 more
doaj   +1 more source

Bimodal pumice populations in the 13.5 Ma Harsány ignimbrite, Bükkalja Volcanic Field, Northern Hungary: Syn-eruptive mingling of distinct rhyolitic magma batches? [PDF]

, 2009
The 13.5 Ma Harsány ignimbrite, in the eastern part of the Bükkalja volcanic field, eastern-central Europe, provides a rare example of mingled rhyolite.
Harangi, Szabolcs, Lukács, Réka, Mason, Paul R. D., Ntaflos, Theodoros   +3 more
core   +1 more source

Numerical simulations of the mingling caused by a magma intruding a resident mush

Volcanica
Currently, our ability to interpret the mechanics of magma mingling and mixing is limited by an incomplete understanding of the modes of mixing across all melt fractions and compositions.
Alexandre Carrara, Alain Burgisser, George W. Bergantz   +2 more
doaj   +1 more source

Self-organisation in gabbroic cumulates: a new patterning mechanism driven by differential migration of immiscible liquids in a crystal mush?

Journal of Petrology
Self-organisation in plutonic igneous rocks has been suggested to form by a variety of mechanisms including oscillatory nucleation and growth, competitive particle growth (CPG), and preferential dissolution and re-precipitation during fluid ...
M. Holness
semanticscholar   +1 more source