Thermal properties of vesicular rhyolite

N. Bagdassarov; D. Dingwell

doi:10.1016/0377-0273(94)90067-1

Thermal properties of vesicular rhyolite

N. Bagdassarov^*
, D. Dingwell

^*Corresponding author for this work

University of Bayreuth

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Thermal diffusivity of rhyolite melt and rhyolite foam (70-80% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length ∼ 50-55 mm, diameter ∼ 22 mm) of rhyolite melt and foam have been derived by heating samples of Little Glass Mountain obsidian. Using available data on heat capacity and density of rhyolite melt, the thermal conductivity of samples has been determined. The difference in thermal conductivity between rhyolite melt and foam at igneous temperatures (∼ 1000°C) is about one order of magnitude. The effect of thermal insulation of magmas due to vesiculation and foaming of the top layer is discussed in terms of the data obtained using a simple illustrative model of magma chamber convection.

Original language	English
Pages (from-to)	179-191
Number of pages	13
Journal	Journal of Volcanology and Geothermal Research
Volume	60
Issue number	2
DOIs	https://doi.org/10.1016/0377-0273(94)90067-1
State	Published - Apr 1994
Externally published	Yes

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title = "Thermal properties of vesicular rhyolite",

abstract = "Thermal diffusivity of rhyolite melt and rhyolite foam (70-80\% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length ∼ 50-55 mm, diameter ∼ 22 mm) of rhyolite melt and foam have been derived by heating samples of Little Glass Mountain obsidian. Using available data on heat capacity and density of rhyolite melt, the thermal conductivity of samples has been determined. The difference in thermal conductivity between rhyolite melt and foam at igneous temperatures (∼ 1000°C) is about one order of magnitude. The effect of thermal insulation of magmas due to vesiculation and foaming of the top layer is discussed in terms of the data obtained using a simple illustrative model of magma chamber convection.",

author = "N. Bagdassarov and D. Dingwell",

year = "1994",

month = apr,

doi = "10.1016/0377-0273(94)90067-1",

language = "英语",

volume = "60",

pages = "179--191",

journal = "Journal of Volcanology and Geothermal Research",

issn = "0377-0273",

publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Thermal properties of vesicular rhyolite

AU - Bagdassarov, N.

AU - Dingwell, D.

PY - 1994/4

Y1 - 1994/4

N2 - Thermal diffusivity of rhyolite melt and rhyolite foam (70-80% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length ∼ 50-55 mm, diameter ∼ 22 mm) of rhyolite melt and foam have been derived by heating samples of Little Glass Mountain obsidian. Using available data on heat capacity and density of rhyolite melt, the thermal conductivity of samples has been determined. The difference in thermal conductivity between rhyolite melt and foam at igneous temperatures (∼ 1000°C) is about one order of magnitude. The effect of thermal insulation of magmas due to vesiculation and foaming of the top layer is discussed in terms of the data obtained using a simple illustrative model of magma chamber convection.

AB - Thermal diffusivity of rhyolite melt and rhyolite foam (70-80% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length ∼ 50-55 mm, diameter ∼ 22 mm) of rhyolite melt and foam have been derived by heating samples of Little Glass Mountain obsidian. Using available data on heat capacity and density of rhyolite melt, the thermal conductivity of samples has been determined. The difference in thermal conductivity between rhyolite melt and foam at igneous temperatures (∼ 1000°C) is about one order of magnitude. The effect of thermal insulation of magmas due to vesiculation and foaming of the top layer is discussed in terms of the data obtained using a simple illustrative model of magma chamber convection.

UR - https://www.scopus.com/pages/publications/0028333404

U2 - 10.1016/0377-0273(94)90067-1

DO - 10.1016/0377-0273(94)90067-1

M3 - 文章

AN - SCOPUS:0028333404

SN - 0377-0273

VL - 60

SP - 179

EP - 191

JO - Journal of Volcanology and Geothermal Research

JF - Journal of Volcanology and Geothermal Research

IS - 2

ER -

Thermal properties of vesicular rhyolite

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