Abstract
The intimate mixing between different magmas of disparate densities, characteristic of some calc-alkaline magma systems, is explained by a new mechanism involving the emplacement of a layer of wet undersaturated mafic magma at the base of a magma chamber containing more differentiated magma. Turbulent transfer of heat between the mafic magma and the overlying magma leads to crystallization and exsolution of volatiles in the lower layer. For an initial water content of a few per cent the bulk density of the mafic magma can become equal to that of the overlying magma causing overturning and intimate mixing of the magmas. The mechanism is most probable in the low pressure environment of a high level magma chamber.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
O'Hara, M. J. & Matthews, R. E. J. geol. Soc. 138, 237–277 (1981).
Sparks, R. S. J. et al. Nature 267, 315–318 (1977).
Sparks, R. S. J. et al. Earth planet. Sci. Lett, 46, 419–430 (1980).
Blake, S. Nature 289, 783–785 (1981).
Eichelberger, J. C. Nature 288, 446–450 (1980).
Huppert, H. E. & Sparks, R. S. J. Nature 286, 46–48 (1980).
Huppert, H. E. & Sparks, R. S. J. Contr. Miner. Petrol. 75, 279–289 (1980).
Huppert, H. E. & Turner, J. S. Earth planet. Sci. Lett. 54, 144–152 (1981).
Huppert, H. E. et al. Earth planet. Sci. Lett. 57, 345–357 (1982).
Anderson, A. T. J. Volcan. geotherm. Res. 1, 1–33 (1976).
Eichelberger, J. C. Nature 275, 21–27 (1978).
Luhr, J. F. & Carmichael, I. S. E. Contr. Miner. Petrol. 71, 343–372 (1980).
Sakuyama, M. J. Volcan. geotherm. Res. 5, 179–208 (1979).
Sakuyama, M. J. Petrol. 22, 553–583 (1981).
Bottinga, Y. & Weill, D. F. Am. J. Sci. 269, 169–182 (1970).
Anderson, A. T. J. Geol. 87, 509–531 (1979).
Burnham, C. W. Geochim. cosmochim. Acta 39, 1077–1084 (1975).
Bottinga, Y. & Weill, D. F. Am. J. Sci. 269, 169–182 (1970).
Rose, W. I. et al. J. Geol. 85, 63–87 (1977).
Arculus, R. J. & Wills, K. J. A. J. Petrol. 21, 743–799 (1980).
Bartlett, R. W. Am. J. Sci. 267, 1067–1082 (1969).
Rice, A. J. geophys. Res. 86, 405–417 (1981).
McBirney, A. R. J. Volcan. geotherm. Res. 7, 357–371 (1980).
Turner, J. S. & Gustafson, L. B. J. Volcan. geotherm. Res. 11, 93–125 (1981).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Huppert, H., Sparks, R. & Turner, J. Effects of volatiles on mixing in calc-alkaline magma systems. Nature 297, 554–557 (1982). https://doi.org/10.1038/297554a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/297554a0
This article is cited by
-
Rifting and recharge as triggers of the mixed basalt–rhyolite Halarauður ignimbrite eruption (Krafla, Iceland)
Contributions to Mineralogy and Petrology (2022)
-
Magma chamber evolution during the 1650 AD Kolumbo eruption provides clues about past and future volcanic activity
Scientific Reports (2020)
-
Textural and micro-analytical insights into mafic–felsic interactions during the Oruanui eruption, Taupo
Contributions to Mineralogy and Petrology (2018)
-
The ∼1000-years BP explosive eruption of Caldeira Volcano (Faial, Azores): the first stage of incremental caldera formation
Bulletin of Volcanology (2015)
-
On the conditions of magma mixing and its bearing on andesite production in the crust
Nature Communications (2014)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.