An analysis of the nonlinear magma-edifice coupling at Grimsvötn volcano (Iceland)
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DOI: 10.1002/2016jb012905
Abstract: Continuous monitoring of seismicity and surface displacement of active volcanoes can reveal important features of the eruptive cycle. Here high-quality GPS and earthquake data recorded at Grimsvotn volcano by the Icelandic Meteorological Office during the… read more here.
Keywords: magma; surface displacement; edifice; period ... See more keywords
Magma‐magma interaction in the mantle beneath eastern China
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DOI: 10.1002/2017jb014023
Abstract: In addition to magma-rock and rock-rock reaction, magma-magma interaction at mantle depth has recently been proposed as an alternative mechanism to produce the compositional diversity of intraplate basalts. However, up to now no compelling geochemical… read more here.
Keywords: magma interaction; low basalts; interaction mantle; magma magma ... See more keywords
Microgravity changes at the Laguna del Maule volcanic field: Magma-induced stress changes facilitate mass addition
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jb014048
Abstract: Time-dependent, or 4-D, microgravity changes observed at the Laguna del Maule volcanic field, Chile, since 2013, indicate significant (1.5 × 1011 kg) ongoing mass injection. Mass injection is focused along the Troncoso fault, and subparallel… read more here.
Keywords: mass addition; microgravity changes; mass; laguna del ... See more keywords
Magma storage beneath Grímsvötn volcano, Iceland, constrained by clinopyroxene-melt thermobarometry and volatiles in melt inclusions and groundmass glass
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jb014067
Abstract: Basalt eruptions at Grimsvotn volcano, Iceland, are generally of low intensity; however, occasionally, an order of magnitude larger eruptions occur. In order to discuss the reasons for this difference, the degassing budget of S and… read more here.
Keywords: groundmass glass; glass; magma storage; volcano iceland ... See more keywords
Arithmetic and k-maximality of the cyclic free magma
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DOI: 10.1007/s00012-019-0608-2
Abstract: We survey free magmas and we explore the structure of their submagmas. By equipping the cyclic free magma with a second distributive operation we obtain a ringoid-like structure with some primitive arithmetical properties. A submagma… read more here.
Keywords: maximality cyclic; arithmetic maximality; magma; free magma ... See more keywords
Geology, igneous geochemistry, mineralization, and fluid inclusion characteristics of the Kougarok tin-tantalum-lithium prospect, Seward Peninsula, Alaska, USA
Sign Up to like & getrecommendations! Published in 2019 at "Mineralium Deposita"
DOI: 10.1007/s00126-019-00883-7
Abstract: The Kougarok prospect is situated in a Sn-W ( + Ta, Nb, Li, Be) metallogenic belt formed in a post-collisional to within-plate tectonic environment. Crystal fractionation of granitic magma, combined with its mixing/mingling with mantle-derived… read more here.
Keywords: fluid; geology; geochemistry; quartz ... See more keywords
Magma generation and sulfide saturation of Permian mafic-ultramafic intrusions from the western part of the Northern Tianshan in NW China: implications for Ni-Cu mineralization
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DOI: 10.1007/s00126-019-00890-8
Abstract: Compared to Permian magmatic Ni-Cu sulfide deposits in the eastern part of the Northern Tianshan, such as Huangshan and Huangshandong, those in the western part (e.g., Baixintan and Lubei) are poorly documented. Zircon ID-TIMS U-Pb… read more here.
Keywords: part; mafic ultramafic; northern tianshan; western part ... See more keywords
The geochemical and petrological characteristics of prenatal caldera volcano: a case of the newly formed small dacitic caldera, Hijiori, Northeast Japan
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DOI: 10.1007/s00410-017-1391-8
Abstract: Evaluating the magma depth and its physical properties is critical to conduct a better geophysical assessment of magma chambers of caldera volcanoes that may potentially cause future volcanic hazards. To understand pre-eruptive conditions of a… read more here.
Keywords: chamber; bulk; caldera volcano; magma ... See more keywords
Redox-controlled generation of the giant porphyry Cu–Au deposit at Pulang, southwest China
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DOI: 10.1007/s00410-019-1546-x
Abstract: Some porphyry Cu–Au deposits with relatively reduced ore assemblages, characterized by high hydrothermal pyrrhotite contents and a lack of primary hematite and magnetite, are generally considered to be associated with reduced I-type granitoids. However, the… read more here.
Keywords: depth; deposit; parental magma; pulang ... See more keywords
Chemical variability in peralkaline magmas and magma reservoirs: insights from the Khaggiar lava flow, Pantelleria, Italy
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DOI: 10.1007/s00410-020-01678-0
Abstract: Silicic volcanoes are increasingly understood to be underlain by crystal-rich and vertically extensive magma reservoirs within which disequilibrium is widespread. Observations from ignimbrite deposits demonstrate that silicic magma reservoirs are often compartmentalised and compositionally stratified.… read more here.
Keywords: magmas; magma reservoirs; peralkaline; magma ... See more keywords
Diagnosing open-system magmatic processes using the Magma Chamber Simulator (MCS): part I—major elements and phase equilibria
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DOI: 10.1007/s00410-020-01722-z
Abstract: The Magma Chamber Simulator (MCS) is a thermodynamic tool for modeling the evolution of magmatic systems that are open with respect to assimilation of partial melts or stoped blocks, magma recharge + mixing, and fractional crystallization. MCS… read more here.
Keywords: mcs; petrology; system; recharge ... See more keywords