Results 271 to 280 of about 5,403,170 (324)

Zooming in on crystal mush: recent advances in volcano tomography

, 2021
The lack of direct seismological evidence for large molten magma chambers is considered to be one of the most important arguments in support of the mush paradigm.
M. Paulatto, J. Morgan, K. Chrapkiewicz, E. Hooft, D. Toomey, C. Papazachos, P. Nomikou, B. Heath   +7 more
semanticscholar   +2 more sources

Origin of the Triassic Lincang granites in the southeastern Tibetan Plateau: Crystallization from crystal mush

Lithos, 2020
Abstract The crustal generation of the Paleo-Tethys orogenic belt in the southeastern Tibetan Plateau is a major unresolved geological problem. The Changning-Menglian suture in the southeastern Tibetan Plateau represents a remnant of the Paleo-Tethys Ocean.
F. Cong, Fu-Yuan Wu, Wenchang Li, Chuan-long Mou, Xiao-Ming Huang, Bao-di Wang, F. Hu, Zhi-min Peng   +7 more
semanticscholar   +2 more sources

Gabbro Nodules: Windows into Icelandic Crystal Mush

Goldschmidt2025 abstracts
Rahul Subbaraman, D. Neave, Margaret E. Hartley, Lewis Hughes, Jonathan Fellowes, M. Polacci, B. Bonechi, L. Pappalardo, G. Buono   +8 more
semanticscholar   +2 more sources

Crystal mush interaction controls eruptive style during the 2018 Kīlauea fissure eruption

Journal of Volcanology and Geothermal Research
A. Soldati, D. Weidendorfer, C. Cimarelli, U. Kueppers, Bruce F. Houghton, C. Tisdale, Donald Bruce Dingwell   +6 more
semanticscholar   +2 more sources

Timescales of crystal mush mobilization in the Bárðarbunga-Veiðivötn volcanic system based on olivine diffusion chronometry

American Mineralogist, 2021
The timescales of magmatic processes within a volcanic system may be variable over a volcano’s geological history. Crystals reflect environmental perturbations under which they grew, and compositional gradients quenched inside crystals on eruption can be
A. Caracciolo, M. Kahl, E. Bali, Guđmundur Guđfinnsson H., Sæmundur Halldórsson A., Margaret Hartley E.   +5 more
semanticscholar   +1 more source

Direct observation of deformation processes in crystal mushes

Journal of Structural Geology, 1996
Abstract Isothermal microstructural development in deforming, melt-bearing crystal mushes is studied using synkinematic microscopy and a polyphase, thiocyanate system. The aim of the work is to contribute to the basis for understanding the origin of microstructures in rocks which have undergone melt-present deformation.
Y. Park, W.D. Means
openaire   +1 more source

Silicic magmas, crystal mushes, granitic plutons and rhyolitic eruptions

2023
A crystallising magma must necessarily pass through a mushy (crystal-dominated) state before it fully solidifies. Similarly, partially melted magma source regions start out as solid-liquid mixtures, albeit with different initial conditions and physical behaviours to melt crystallisation.
John Clemens, Scott Bryan, Nick Petford
openaire   +1 more source

Petrogenesis of Triassic Caojian A-type rhyolites and associated I-type granites in the southeastern Tibetan Plateau: rejuvenation of crystal mush

Geological Magazine, 2021
The orogenic process and crustal growth of the Changning–Menglian Palaeo-Tethys orogenic belt in the southeastern Tibetan Plateau is not fully understood.
F. Cong, D. He, Weiqiang Ji, Liang Huang, Bo Xiong, Shaoqin Zhang, Xiao-Ming Huang   +6 more
semanticscholar   +1 more source

Fast melt expulsion from crystal-rich mushes via induced anisotropic permeability

Earth and Planetary Science Letters, 2021
Abstract Catastrophic eruptions of rhyolitic super volcanoes require large volumes of silicic magma to be extracted from a crystal-rich mush at high rates. However, fast melt extraction is thought to be difficult because of the low permeability of mushes and the high viscosities of silicic melts. Here, we show that induced ephemeral high permeability
Boda Liu, Cin-Ty Lee
openaire   +1 more source

An experimental study of melt migration in crystal-rich mushes

2022
<p>Increasingly, volcanologists model mature volcanic systems as being fed by stratified magma reservoirs, that is, small lenses of eruptible magma suspended within a larger volume of non-eruptible, crystal-rich mush. Erupted lavas record geochemical evidence for long-term deep storage of distinct magma bodies followed by their ascent and
Amy Ryan, Lars Hansen, Mark Zimmerman, Mattia Pistone   +3 more
openaire   +1 more source