MND(microlite number density) water exsolution rate meter

Toramaru, Atsushi; Noguchi, Satoshi; Oyoshihara, S.; Tsune, Akira

doi:10.1016/j.jvolgeores.2008.03.035

Cited by 94 publications

(75 citation statements)

References 57 publications

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“…The predicted H 2 O contents add important context in that the immediate eruption triggering mechanisms likely began at depths equivalent to 400 MPa pressures, and were accelerated as magmas migrated to very shallow depths at P < 100 MPa (cf. Rutherford 2008;Gonnermann and Manga 2012;Rutherford and Hill 1993;Toramaru et al 2008;Applegarth et al 2013; see also Supplementary 1 Data Magma Dynamics).…”

Section: Discussionmentioning

confidence: 99%

An improved clinopyroxene-based hygrometer for Etnean magmas and implications for eruption triggering mechanisms

Perinelli

Mollo

Gaeta

et al. 2016

American Mineralogist

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We have refined the clinopyroxene-based hygrometer published by Armienti et al. (2013) for a better quantitative understanding of the role of H 2 O in the differentiation of Etnean magmas. The original calibration data set has been significantly improved by including several experimental clinopyroxene compositions that closely reproduce those found in natural Etnean products. To verify the accuracy of the model, some randomly selected experimental clinopyroxene compositions external to the calibration data set have been used as test data. Through a statistic algorithm based on the Mallows' C P criterion, we also check that all model parameters do not cause data overfitting, or systematic error.The application of the refined hygrometer to the Mt. Etna 2011-2013 lava fountains indicates that most of the decreases in H 2 O content occur at P < 100 MPa, in agreement with melt inclusion data suggesting abundant H 2 O degassing at shallow crustal levels during magma ascent in the conduit and eruption to the surface.

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Section: Discussionmentioning

confidence: 99%

An improved clinopyroxene-based hygrometer for Etnean magmas and implications for eruption triggering mechanisms

Perinelli

Mollo

Gaeta

et al. 2016

American Mineralogist

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“…Crystal nucleation and growth are first-order processes in the evolution of silicate melts during cooling or degassing (e.g., Cashman and Marsh, 1988;Marsh, 1988;Fokin et al, 2006;Toramaru et al, 2008;Hammer, 2009;Hammer et al, 2010;Melnik et al, 2011) and determine mineral and melt chemistry and their evolution, which form the foundation of thermobarometric and hygrometric constraints (e.g., Putirka, 2008;Lange et al, 2009;Waters and Lange, 2015). Minerals may also provide critical insights into the rates of magmatic processes occurring during magma evolution and ascent at the onset of volcanic eruptions, with analytical methods ranging from crystal size distribution studies (e.g., Cashman and Marsh, 1988;Marsh, 1988Marsh, , 1998Hammer et al, 1999;Piochi et al, 2005;Noguchi et al, 2006Noguchi et al, , 2008Clarke et al, 2007;Toramaru et al, 2008;Melnik et al, 2011) to diffusion geospeedometry (e.g., Zellmer et al, 1999Zellmer et al, , 2003Zellmer et al, , 2011Zellmer et al, , 2016Morgan et al, 2004;Costa and Dungan, 2005;Martin et al, 2008;Druitt et al, 2012;Ruprecht and Plank, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Minerals may also provide critical insights into the rates of magmatic processes occurring during magma evolution and ascent at the onset of volcanic eruptions, with analytical methods ranging from crystal size distribution studies (e.g., Cashman and Marsh, 1988;Marsh, 1988Marsh, , 1998Hammer et al, 1999;Piochi et al, 2005;Noguchi et al, 2006Noguchi et al, , 2008Clarke et al, 2007;Toramaru et al, 2008;Melnik et al, 2011) to diffusion geospeedometry (e.g., Zellmer et al, 1999Zellmer et al, , 2003Zellmer et al, , 2011Zellmer et al, , 2016Morgan et al, 2004;Costa and Dungan, 2005;Martin et al, 2008;Druitt et al, 2012;Ruprecht and Plank, 2013). Thus, understanding the processes that govern crystal nucleation and growth, as well as crystal morphology, structure, and composition, are key to unlocking volcanic hazards and many other compelling questions.…”

Section: Introductionmentioning

confidence: 99%

Inferring the Effects of Compositional Boundary Layers on Crystal Nucleation, Growth Textures, and Mineral Chemistry in Natural Volcanic Tephras through Submicron-Resolution Imaging

et al. 2016

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Crystal nucleation and growth are first order processes captured in volcanic rocks and record important information about the rates of magmatic processes and chemical evolution of magmas during their ascent and eruption. We have studied glass-rich andesitic tephras from the Central Plateau of the Southern Taupo Volcanic Zone by electron-and ion-microbeam imaging techniques to investigate down to sub-micrometer scale the potential effects of compositional boundary layers (CBLs) of melt around crystals on the nucleation and growth of mineral phases and the chemistry of crystal growth zones. We find that CBLs may influence the types of mineral phases nucleating and growing, and growth textures such as the development of swallowtails. The chemistry of the CBLs also has the capacity to trigger intermittent overgrowths of nanometer-scale bands of different phases in rapidly growing crystals, resulting in what we refer to as cryptic phase zoning. The existence of cryptic phase zoning has implications for the interpretation of microprobe compositional data, and the resulting inferences made on the conditions of magmatic evolution. Identification of cryptic phase zoning may improve thermobarometric estimates and thus geospeedometric constraints. In future, a more quantitative characterization of CBL formation and its effects on crystal nucleation and growth may contribute to a better understanding of melt rheology and magma ascent processes at the onset of explosive volcanic eruptions, and will likely be of benefit to hazard mitigation efforts.

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“…How can we link geophysical data and the particle texture quantification? Shea et al (2010bShea et al ( , 2011Shea et al ( , 2012) Wright et al (2012) Phreatomagmatic fragmentation Tsukui and Suzuki (1995) Nakada (2001, 2002) Shimano and Nakada (2006) Mattsson ( Crystal size distribution (CSD) Crystal size (mean, modal and maximum crystal size), crystallization kinetics (nucleation and growth rates), annealing, crystal accumulation and fractionation Cashman and Marsh (1988) Marsh (1988 Cashman (1993) Armienti et al (1994) Higgins , 2002a, b, 2006, 2011) Wilhelm and Worner (1996 Bindeman (2003) Gualda (2006) Gualda and Rivers (2006) Mock et al (2003) Simakin and Bindeman (2008) Spillar and Dolejs (2013) Magma ascent rate Cashman (1992) Rutherford and Hill (1993) Rutherford and Devine (2003 Shea et al (2009) Water exsolution rate meter Toramaru et al (2008) Magma mixing Morgan et al (2007 Crystal + vesicle size and percentage Three phases magma rheology, fluid mechanical behaviour of magma Gurioli et al (2014 5. What is the best multi-disciplinary strategy for combining output from each field in a meaningful way?…”

Section: Introductionmentioning

confidence: 99%

MeMoVolc consensual document: a review of cross-disciplinary approaches to characterizing small explosive magmatic eruptions

et al. 2015

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A workshop entitled “Tracking and understanding volcanic emissions through cross-disciplinary integration: a textural working group” was held at the Université Blaise Pascal (Clermont-Ferrand, France) on the 6–7 November 2012. This workshop was supported by the European Science Foundation (ESF). The main objective of the workshop was to establish an initial advisory group to begin to define measurements, methods, formats and standards to be applied in the integration of geophysical, physical and textural data collected during volcanic eruptions. This would homogenize procedures to be applied and integrated during both past and ongoing events. The workshop comprised a total of 35 scientists from six countries (France, Italy, Great Britain, Germany, Switzerland and Iceland). The four main aims were to discuss and define: standards, precision and measurement protocols for textural analysis; identification of textural, field deposit, chemistry and geophysical parameters that can best be measured and combined; the best delivery formats so that data can be shared between and easily used by different groups; and multi-disciplinary sampling and measurement routines currently used and measurement standards applied, by each community. The group agreed that community-wide, cross-disciplinary integration, centred on defining those measurements and formats that can be best combined, is an attainable and key global focus. Consequently, we prepared this paper to present our initial conclusions and recommendations, along with a review of the current state of the art in this field that supported our discussions

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MND(microlite number density) water exsolution rate meter

Cited by 94 publications

References 57 publications

An improved clinopyroxene-based hygrometer for Etnean magmas and implications for eruption triggering mechanisms

An improved clinopyroxene-based hygrometer for Etnean magmas and implications for eruption triggering mechanisms

Inferring the Effects of Compositional Boundary Layers on Crystal Nucleation, Growth Textures, and Mineral Chemistry in Natural Volcanic Tephras through Submicron-Resolution Imaging

MeMoVolc consensual document: a review of cross-disciplinary approaches to characterizing small explosive magmatic eruptions

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