Abstract
The field work reported on here is part of the 1:500 000 scale mapping programme of the Godthåbsfjord region (Allaart et al., this report). Ivisârtoq lies some 110 km north-east of Godthåb (50° 00'W, 64° 45'N, map 64 V 2 Kapisigdlit), (fig. 15). The area belongs to the central Archaean block of West Greenland (Pulvertaft, 1968) which in the Godthåbsfjord region has been shown to contain gneisses and associated amphibolites which may be broadly divided into two complexes (McGregor, 1973). The Amitsoq gneisses and included amphibolites have ages of c. 3700 m.y. (Black et al., 1971; Moorbath et al., 1972), and the Nûk gneisses and associated amphibolites and anorthosites ofc. 3000 m.y. (Pankhurst et al., 1973; Moorbath & Pankhurst, 1976).
Highlights
The field work reported on here is part of the 1:500 000 scale mapping programme of the Godthåbsfjord region (Allaart et al, this report)
The area belongs to the central Archaean block of West Greenland (Pulvertaft, 1968) which in the Godthåbsfjord region has been shown to contain gneisses and associated amphibolites which may be broadly divided into two complexes (McGregor, 1973)
Bridgwater et al (1976) grouped the main belt of supracrustals in the area together with the Malene supracrustal rocks and their equivalents both on petrological grounds and because earlier reconnaissance work did not reveal the presence of demonstrable Ameralik dykes cutting either the supracrustals or the granitic gneisses intrusive into their margins
Summary
The field work reported on here is part of the 1:500 000 scale mapping programme of the Godthåbsfjord region (Allaart et al, this report). The area belongs to the central Archaean block of West Greenland (Pulvertaft, 1968) which in the Godthåbsfjord region has been shown to contain gneisses and associated amphibolites which may be broadly divided into two complexes (McGregor, 1973). Bridgwater et al (1976) grouped the main belt of supracrustals in the area together with the Malene supracrustal rocks and their equivalents both on petrological grounds and because earlier reconnaissance work did not reveal the presence of demonstrable Ameralik dykes cutting either the supracrustals or the granitic gneisses intrusive into their margins. This report describes the field relationships ofthe rock types and contains the first report of ultramafic pillow lavas from the Godthåbsfjord region.
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.
