Research in Layered Intrusions
Dr. Alan E. Boudreau
boudreau@duke.edu

Research into layered intrusions at Duke University has been concentrated in a number of directions. These include the following:

1. Halogen geochemistry of layered intrusions and the role of volatile fluids during the crystallization of layered intrusions

2. Textural evolution of cumulate rocks, crystal size distributions studies and quantitative modeling of crystal aging..

3. Stable Cl isotopes and the origin of high-Cl parent magmas.

4. Quantitative modeling of compaction and liquid infiltration-reaction in solidifying crystal piles.

Abstracts of Recent Publications:
(click on the title to read abstract)

Chromatographic Separation of the PGE, Gold, Base Metals and Sulfur During Degassing of a Solidifying and Compacting Crystal Pile (Contributions to Mineralogy and Petrology, in press)

Fluid Fluxing of Cumulates: The J-M Reef and Associated Rocks of the Stillwater Complex, Montana (Journal of Petrology, in press)

Stable Cl Isotopes of the Stillwater Complex, Montana (Geology, 1997, v. 25, p. 791-794)

A Reevaluation of Crystal Size Distributions in Chromite Cumulates (American Mineralogist, 1996, v. 81, p. 1452-1459)

The Skaergaard Layered Series. Part III. Non-Dynamic Layering (Journal of Petrology)

Ongoing and Planned Research Studies

Halogen Geochemistry and CI isotopes of the Bushveld Complex

Quantitative Modeling of Liquid Infiltration and Reaction in Layered Intrusions