Results 31 to 40 of about 921,071 (254)
Frontiers in Earth Science, 2023 The Himalayan leucogranites provide a good opportunity to investigate the crustal evolution of the southern Qinghai-Tibet Plateau. In this study, we present zircon U-Pb and monazite U-Th-Pb ages, zircon Hf isotopes and whole-rock Sr-Nd-Pb isotopes and ...
Zuowen Dai +7 more
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Progressive underplating of mafic material at mid-crustal depth beneath Ischia volcano, Italy
Communications Earth & Environment, 2023 The destructive (Mw 3.9) earthquake of 21 August 2017 re-opened the question on where magma resides at the Ischia island volcano. The peculiar complexity of the seismic source initiated the debate on the involvement of fluid-related processes, but the ...
Irene Bianchi +3 more
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Time scales of crystal mixing in magma mushes [PDF]
Geophysical Research Letters, 2016 AbstractMagma mixing is widely recognized as a means of producing compositional diversity and preconditioning magmas for eruption. However, the processes and associated time scales that produce the commonly observed expressions of magma mixing are poorly understood, especially under crystal‐rich conditions.
Schleicher, Jillian M. +3 more
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Interfacial growth morphologies in dense eutectic crystal mushes
IMA Journal of Applied Mathematics, 2023 Abstract We consider the interfacial growth morphologies of crystals growing in contact in crystal mushes, with a specific application to those formed by the solidification of basaltic magma. We focus on the particular case of an augite (pyroxene) crystal growing between two plagioclase crystals.
Fowler, Andrew, Holness, Marian B.
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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 +3 more
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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 +3 more
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The permeability of loose magma mush [PDF]
, 2023 Models for the evolution of magma mush zones are of fundamental importance for understanding magma storage, differentiation in the crust, and melt extraction processes that prime eruptions.
Dobson, Katherine J. +7 more
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Frontiers in Earth Science, 2020 The strength of foliations defined by shape preferred orientation of plagioclase in troctolitic cumulates from the Layered Series of the Skaergaard intrusion, and the Rum Eastern Layered Intrusion, increases as the grains become more tabular, due either ...
Marian B. Holness +3 more
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Petrology of the Skaergaard Layered Series
GEUS Bulletin, 2023 The Skaergaard intrusion is a layered, ferrobasaltic intrusion emplaced during the Early Eocene into the rifting volcanic margin of East Greenland.
Peter Thy +2 more
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Organizational behavior in a multicultural work setting : Pet Food Company Oy Mush Ltd. [PDF]
, 2021 The purpose of the study was to determine the factors that influence employee organisational behavior in a multicultural work setting and how they impact the overall organisational behaviour of the com-pany; case study is Oy Mush Ltd a pet food company ...
Omoregie, Etiosa
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