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Experimental data for a proposed empirical igneous geobarometer: Aluminum in hornblende at 10 kbar pressure

Rutter, Michael J. and van der Laan, Sieger R. (1989) Experimental data for a proposed empirical igneous geobarometer: Aluminum in hornblende at 10 kbar pressure. Geology, 17 (10). pp. 897-900. ISSN 0091-7613. http://resolver.caltech.edu/CaltechAUTHORS:20160114-083235889

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Abstract

Knowledge of the depth of solidification of talc-alkalic plutons is critical to understanding and unraveling the complex spatial, temporal, and chemical evolution of orogenic belts. An empirical geobarometer has recently been proposed based on the total Al content (AlT) of near-solidus calcic hornblendes in tonalite and granodiorite intrusive rocks in the pressure range < 1 to 8 kbar. Pressures were estimated from mineral assemblages in associated metamorphic country rocks. We report experimental data on newly crystallized near-solidus amphiboles in partly melted, vapor-absent garnet tonalite at 10 kbar that provide some experimental support for the proposed geobarometer consistent with the extrapolated empirical result, and confirm its limited applicability to specific, multimineral assemblages.


Item Type:Article
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http://dx.doi.org/10.1130/0091-7613(1989)017<0897:EDFAPE>2.3.CO;2DOIArticle
http://geology.gsapubs.org/content/17/10/897.shortPublisherArticle
http://geology.geoscienceworld.org/content/17/10/897.abstractPublisherArticle
Additional Information:© 1989 Geological Society of America. Manuscript received March 22, 1989; Revised manuscript received May 11, 1989; Manuscript accepted May 18, 1989. This research was supported by National Science Foundation Grant EAR-85-06857. We thank F.C.W. Dodge and P. C. Bateman for the analyzed tonalite, Art Chodos for assistance with the electron microprobe, and Alan B. Thompson, Steven Daly, J. M. Hammarstrom, and J. L. Anderson for useful comments. Caltech Division of Geological and Planetary Sciences Contribution 4595.
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NSFEAR-85-06857
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Caltech Division of Geological and Planetary Sciences4595
Record Number:CaltechAUTHORS:20160114-083235889
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160114-083235889
Official Citation:Michael J. Rutter, Sieger R. Van der Laan, and Peter J. Wyllie Experimental data for a proposed empirical igneous geobarometer: Aluminum in hornblende at 10 kbar pressure Geology, October, 1989, v. 17, p. 897-900, doi:10.1130/0091-7613(1989)017<0897:EDFAPE>2.3.CO;2
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63677
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:14 Jan 2016 19:36
Last Modified:14 Jan 2016 19:36

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