ELECTRON MICROPROBE ANALYSIS OF MANTLE-DERIVED MINERALS FROM EOCENE ALKALINE INTRUSIONS IN NORTH-CENTRAL UTAH

Authors

Daniel T. Maughan, Brigham Young University
Dr. Jeffrey D. Keith, Brigham Young University

Keywords

electron microprobe, mantle-derived minerals, eocene alkaline intrusions

College

Physical and Mathematical Sciences

Department

Geological Sciences

Abstract

Mafic alkaline magmas are unusually oxidized, volatile-rich, primitive magmas that are derived from the earth’s mantle when portions of the crust are being extended (stretched). The occurrence of alkaline magmatism is beginning to be recognized as one of the main criteria necessary for the formation of some types of metallic ore deposits through out the world. Alkaline magmas likely deliver metals and volatile gasses to the base of magma chambers, both of which are requisite for the mineralization of ore deposits. The Bingham district, Tintic district, Park City district, Alta district, and other smaller mining districts in north-central Utah all have alkaline rocks that are spatially and genetically related to their ore deposits.

Recommended Citation

Maughan, Daniel T. and Keith, Dr. Jeffrey D. (2013) "ELECTRON MICROPROBE ANALYSIS OF MANTLE-DERIVED MINERALS FROM EOCENE ALKALINE INTRUSIONS IN NORTH-CENTRAL UTAH," Journal of Undergraduate Research: Vol. 2013: Iss. 1, Article 2684.
Available at: https://scholarsarchive.byu.edu/jur/vol2013/iss1/2684