Journal ArticleDOI
Gradients in physical parameters in zoned felsic magma bodies: Implications for evolution and eruptive withdrawal
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TLDR
In this article, five diverse, well documented, chemically zoned magmas have been chosen from the literature to demonstrate the extent and patterns of density and viscosity gradients in zoned magnetite chambers, which are used to assess implications for development of zonation, and withdrawal dynamics and preservation of systematic chemical variations in the final pyroclastic deposit.About:
This article is published in Journal of Volcanology and Geothermal Research.The article was published on 1990-10-01. It has received 75 citations till now. The article focuses on the topics: Magma chamber & Silicic.read more
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Methods of determining the rheological properties of magmas at sub-liquidus temperatures.
Harry Pinkerton,R. J. Stevenson +1 more
TL;DR: In this paper, a non-vesicular basaltic melts behave as Newtonian fluids at temperatures above their liquidus and their viscosities can be calculated using a method developed by Shaw et al.
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Silicic magma reservoirs in the Earth's crust
Olivier Bachmann,Christian Huber +1 more
TL;DR: In this article, the authors focus on recent claims that magma columns within the Earth's crust are mostly kept at high crystallinity (mush zones) and that the dynamics within those mush columns, albeit modulated by external factors (e.g., regional stress field, rheology of the crust, pre-existing tectonic structure), play an important role in controlling how magmas evolve, degas, and ultimately erupt.
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The Bishop Tuff: New Insights From Eruptive Stratigraphy
Colin J. N. Wilson,Wes Hildreth +1 more
TL;DR: The 0.76 Ma Bishop Tuff, from Long Valley caldera in eastern California, consists of a widespread fall deposit and voluminous partly welded ignimbrite as discussed by the authors.
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Geochemical zoning, mingling, eruptive dynamics and depositional processes; the Campanian Ignimbrite, Campi Flegrei caldera, Italy
TL;DR: The Campanian Ignimbrite (CI) is a large volume trachytic tuff erupted at 37 ka from the Campi Flegrei and composed of a fallout deposit overlain by ignimbrites.
References
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Journal ArticleDOI
Gradients in silicic magma chambers: Implications for lithospheric magmatism
TL;DR: In this article, the authors studied the effect of pre-emptive and preemptive gradients in T and O 2 in a variety of compositionally zoned ash flow tuffs.
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Viscosities of magmatic silicate liquids; an empirical method of prediction
TL;DR: In this article, it was shown that viscosities of anhydrous silicate liquids can be estimated more rapidly and with equal precision using only four partial molar coefficients of SiO 2.
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Properties of some common igneous rocks and their melts at high temperatures
TL;DR: The properties of four igneous rocks (a tholeiitic and an alkali-olivine basalt, an andesite, and a rhyolite) and a synthetic lunar sample have been determined at atmospheric pressure over a range of temperatures including their melting interval as discussed by the authors.
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On the crystallinity, probability of occurrence, and rheology of lava and magma
TL;DR: In this article, a histogram of the total phenocryst content measures the probability of the magma to be erupted as lava, and the eruption probability is defined as the product of the probability for finding the magmas at any state of crystallinity (thermal probability) and the rheological probability (Rpheological probability).