Geoinformatic approach to global nepheline syenite and ... - Geosphere

4 downloads 0 Views 3MB Size Report
Wilson (1966) showed that rifts commonly develop above existing sutures. Geoinformatic approach to global nepheline syenite and carbonatite distribution: ...
Geoinformatic approach to global nepheline syenite and carbonatite distribution: Testing a Wilson cycle model Kevin Burke Shuhab Khan Department of Geosciences, University of Houston, Houston, Texas 77204-5007, USA

ABSTRACT The association of alkaline igneous rocks and carbonatites (ARCs) with intracontinental rifts has long been recognized. Deformed alkaline rocks (such as nepheline syenites) and carbonatites (DARCs), which form a small subset (