Abstract

The Danish Lithosphere Centre (DLC) has now completed its second season of field work in the Nagssugtoqidian orogen of West Greenland. The work is aimed at studying the orogenic evolution of the Nagssugtoqidian orogen and comparisons with other Early Proterozoic orogens on the northern margin of the North Atlantic Archaean craton (see Larsen, this report). This paper presents the preliminary results from the field work and the current status of laboratory work related to this project.

Highlights

  • In the period from 26 June to 25 August, 1995, field work was carried out in an area between latitudes 65°15'N (Maniitsoq) and 68° 10'N (Ataneq and Arfersiorfik fjords) in West Greenland, covering a large portion of the Nagssugtoqidian orogen and part of its southern foreland (Fig. l)

  • Several laboratory studies associated with these field projects are currently being carried out on samples collected during the two field seasons

  • The 1994 field season resulted in a new subdivision and a re-evaluation of structural elements in the orogen (Marker et al, 1995)

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Summary

The Palaeoproterozoic Nagssugtoqidian orogen in

The Danish Lithosphere Centre (DLC) has completed its second season of field work in the Nagssugtoqidian orogen of West Greenland. In the period from 26 June to 25 August, 1995, field work was carried out in an area between latitudes 65°15'N (Maniitsoq) and 68° 10'N (Ataneq and Arfersiorfik fjords) in West Greenland, covering a large portion of the Nagssugtoqidian orogen and part of its southern foreland (Fig. l). Several laboratory studies associated with these field projects are currently being carried out on samples collected during the two field seasons. These include geochronology, geochemistry including isotope geochemistry, geothermobarometry and microstructural analyses

The Nagssugtoqidian orogen
SNO southem Archaean loreland dV
New resuJts
Southern Archaean foreland
KallgfimiItf dykes
The southern Nagssugtoqidian front
The boundary between the southern and central Nagssugtoqidian orogen
Sisimiut charnockite cornplex
Nordre Isorloq zone
Eastern Nordre Slrømfjord region
Supporting projects
Full Text
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