Abstract
The age determination programme on rocks from the Caledonian fold belt of East Greeniand has been continued at the Eidg. Technische Hochschule in Zürich. Recent work has been aimed at verification of the pre-Caledonian age for an early metamorphism of the Krummedal supracrustal sequence. Additional analyses on iurther rock samples of this sequence have clearly confirmed that a strong preCaledonian metamorphism affected the rocks of the Scoresby Sund area around 1000 to 1200 m.y. ago. This pre-Caledonian event is a1so reflected by the ages of three synkinematic granitic bodies in Nordvestfjord, Øfjord and on Bjørneøer.
Highlights
The age determination programme on rocks from the Caledonian fold belt of East Greeniand has been continued at the Eidg
Interpretation The tentative interpretations put forward be10w are based on the geological descriptions of the Scoresby Sund area given by Henriksen & Higgins (1971) and others, as well as personal communications with GGU staff geo1ogists
Kyanite-bearing garnet schists from Gåseland, Paul Stem Land, Rolige Bræ and Renodden. All samples from this southern region plot on an isochron with a slope corresponding to an age of 1162±85 m.y., which appears to reflect the time of an early metamorphism of the Krummedal supracrusta1 sequence
Summary
All samples from this southern region plot on an isochron with a slope corresponding to an age of 1162±85 m.y. 7), which appears to reflect the time of an early metamorphism of the Krummedal supracrusta1 sequence. North coast of 71°31' N/25°44' W foliated augen granite
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
