Geochronology and cooling history of the Nain Anorthosite Complex from an argon-40/argon-39 study

• Main Author: Yu, Yang
• Format: Text
• Language: English
• Published: ScholarWorks@UMass Amherst 1992
• Subjects: Geochemistry|Geology|Mineralogy; Nain
• Online Access: https://scholarworks.umass.edu/dissertations/AAI9219517

The Nain Anorthosite Complex is a Proterozoic plutonic suite in Labrador. This complex is composed over 24 anorthositic and troctolitic rocks, but its regional geochronology and tectonic environment were uncertain. The $\sp{40}$Ar/$\sp{39}$Ar method was applied to this complex, and the results shed...