Field report from the 2011 field season on the Skjoldungen Alkaline Provence, South East Greenland

Martin Bromann Klausen, Thomas Find Kokfelt

Publikation: Bog/rapportRapport (offentligt tilgængelig)

Abstrakt

This report is based on field work carried out in 2011 in the Skjoldungen area, South-East Greenland within the framework of the SEGMENT project – a joint project between the National Geological Survey of Denmark and Greenland, GEUS, and Greenland Ministry of Industry and Mineral resources, MIM. The overall target of the project has been to assess the mineral potential of South-East Greenland by doing new field work and follow-up scientific research in the area. This GEUS report concentrates on the new findings made within the Skjoldungen Alkaline Province (SAP; Nielsen and Rosing, 1990), which is a worldwide rare occurrence of Archaean alkaline rocks (Blichert-Toft, 1995). The original geological mapping of the Skjoldungen area was done by GGU, mainly at a reconnaissance scale, in the late 1980’s and early 1990’s, resulting in the map compilation in scale 1:500 000 of Escher (1990).

The goal of the renewed field work in the Skjoldungen area was, through field work in selected key areas, to develop a more detailed understanding of the igneous rocks of the SAP and their petrogenesis, as well as evaluating the economic potential of the area. The specific key research objectives set out included: (1) to constrain the geographical extent of the SAP, (2) to identify any temporal evolution within the SAP from new zircon U/Pb age dates, (3) to characterize parental magma types for the SAP magmatism using geochemistry and isotope analytical work, and (4) to evaluate the geotectonic setting for the emplacement of the SAP.

Since the 2011 field season a follow-up season to the same area was conducted in 2012. The work described in this report only relates to the findings made during the 2011 field season; a separate GEUS report will describe the outcome of the 2012 season. Furthermore, a GEUS report related to the extensive new zircon U/Pb age dating work done on the rocks collected from both field seasons is planned, as well as on-going postgraduate research projects investigate the petrogenesis of the remarkable magmas that formed the SAP.
OriginalsprogEngelsk
UdgivelsesstedCopenhagen
ForlagGEUS
Antal sider97
Vol/bind2014
DOI
StatusUdgivet - 25 mar. 2015

Publikationsserier

NavnDanmarks og Grønlands Geologiske Undersøgelse Rapport
ForlagGEUS
Nr.81
Vol/bind2014

Emneord

  • Greenland

Programområde

  • Programområde 4: Mineralske råstoffer

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