Results 41 to 50 of about 5,403,170 (324)

A continuum model of multi-phase reactive transport in igneous systems [PDF]

, 2019
Multi-phase reactive transport processes are ubiquitous in igneous systems. A challenging aspect of modelling igneous phenomena is that they range from solid-dominated porous to liquid-dominated suspension flows and therefore entail a wide spectrum of ...
Keller, Tobias, Suckale, Jenny
core   +2 more sources

The Role of Crystal Accumulation and Cumulate Remobilization in the Formation of Large Zoned Ignimbrites: Insights From the Aso-4 Caldera-forming Eruption, Kyushu, Japan

Frontiers in Earth Science, 2021
The Aso-4 caldera-forming event (86.4 ± 1.1 ka, VEI-8) is the second largest volcanic eruption Earth experienced in the past 100 ka. The ignimbrite sheets produced during this event are some of the first ever described compositionally zoned pyroclastic ...
Franziska Keller, Olivier Bachmann, Nobuo Geshi, Ayumu Miyakawa   +3 more
doaj   +1 more source

On the existence and structure of a mush at the inner core boundary of the Earth [PDF]

, 2007
It has been suggested about 20 years ago that the liquid close to the inner core boundary (ICB) is supercooled and that a sizable mushy layer has developed during the growth of the inner core.
Alfè, Anderson, Anderson, Bergman, Bergman, Boehler, Boehler, Braginsky, Buffett, Buffett, Bulau, Cao, Chalmers, Christensen, Coriell, D. Brito, Davis, Dziewonski, Favier, Fearn, Gubbins, Hunt, Jacobs, Knittle, Kurz, Labrosse, Laio, Langer, Le Bars, Loper, Loper, Morse, Morse, Mullins, Nimmo, Poirier, Poirier, R. Deguen, Ringwood, Sherman, Shimizu, Stacey, Stevenson, Stixrude, Sumita, T. Alboussière, Trivedi, Vočadlo, Vočadlo, Wen, Williams, Yoshida, Yukutake   +52 more
core   +6 more sources

Extensive, water-rich magma reservoir beneath southern Montserrat [PDF]

, 2011
South Soufriere Hills and Soufriere Hills volcanoes are two km apart at the southern end of the island of Montserrat, West Indies. Their magmas are distinct geochemically, despite these volcanoes having been active contemporaneously at 131-129 ka. We use
Edmonds, Marie, Kohn, SC, Hauri, EH, Humphreys, MCS, Cassidy, M   +4 more
core   +4 more sources

The formation of freckles in binary alloys [PDF]

, 1985
This paper presents a synopsis of some recent work, still in progress, aimed at elucidating a quantitative explanation of the processes by which flow chimneys form when certain types of alloys are directionally solidified. If (for example) light fluid is
Fowler, A. C.
core   +2 more sources

Shear-induced pressure changes and seepage phenomena in a deforming porous layer-I [PDF]

, 2003
We present a model for flow and seepage in a deforming, shear-dilatant sensitive porous layer that enables estimates of the excess pore fluid pressures and flow rates in both the melt and solid phase to be captured simultaneously as a function of stress ...
Arthur, Arthur, Arzi, Barboza, Barriére, Becker, Biot, Brauns, Brown, Carmichael, Castro, Cates, Connolly, Cundall, de Josselin de Jong, Dell'Angelo, Drew, Dullien, Emmons, Fernandez, Gaspar, Gaspar, Goddard, Hort, Huppert, Jellinek, Jupart, Kelemen, Kerr, Knesel, Koenders, Koenders, Koenders, Koenders, Koenders, Kohlstedt, Kuhn, Lambe, M. A. Koenders, Marsh, Marsh, Marsh, Martin, McBirney, McKenzie, Mead, Molenkamp, N. Petford, Nicolas, Paterson, Paterson, Petford, Petford, Petford, Renner, Reynolds, Rosenberg, Rowe, Rutter, Scott, Sleep, Spencer, Spiegelman, Spiegelman, Stevenson, Tait, Terzaghi, Turner, Van der Molen, Vasilyev, Vermeer, Vigneresse, Vigneresse, Wickham, Worster   +74 more
core   +1 more source

Defining Pre-eruptive Conditions of the Havre 2012 Submarine Rhyolite Eruption Using Crystal Archives

Frontiers in Earth Science, 2020
The 2012 Havre eruption evacuated a crystal-poor rhyolite (∼3–7% crystals) producing a volumetrically dominant (∼1.4 km3) pumice raft, as well as seafloor giant pumice (5–8%) and lavas (12–14%) at the vent (∼0.1 km3), both of which have subtly higher ...
Joseph Knafelc, Scott E. Bryan, David Gust, Henrietta E. Cathey   +3 more
doaj   +1 more source

Crystal mush growth and collapse on a steep wall: the Marginal Border Series of the Skaergaard Intrusion, East Greenland

Journal of Petrology, 2021
The Skaergaard Intrusion of East Greenland solidified as a closed system, with the development of progressively more fractionated material at the roof, floor and vertical walls of the magma chamber.
M. Holness, M. Humphreys, O. Namur, J. Andersen, C. Tegner, T. Nielsen   +5 more
semanticscholar   +1 more source

Schlieren-Bound Magmatic Structures Record Crystal Flow-Sorting in Dynamic Upper-Crustal Magma-Mush Chambers

Frontiers in Earth Science, 2020
The size, longevity, and mobility of upper-crustal magma mushes, and thus their ability to mix and interact with newly arriving magma batches, are key factors determining the evolution of magma reservoirs.
Katie E. Ardill, Scott R. Paterson, Jonathan Stanback, Pablo H. Alasino, Pablo H. Alasino, James J. King, James J. King, Simon E. Crosbie   +7 more
doaj   +1 more source

Rhyolite generation prior to a Yellowstone supereruption: insights from the Island Park-Mount Jackson rhyolite series [PDF]

, 2017
The Yellowstone volcanic field is one of the largest and best-studied centres of rhyolitic volcanism on Earth, yet it still contains little-studied periods of activity.
Bachmann, Olivier, Bindeman, Ilya N., Ellis, Ben S., Guillong, Marcel, Kent, Adam J.R., Mark, Darren F., Troch, Juliana   +6 more
core   +1 more source