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Aeromag 2001

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Description of an aeromagnetic survey in Greenland 2001
AGS Greenland - Intro page
The Aeromag 2001 survey covers a part of central West Greenland between Uummannaq and Prøven and includes both onshore and offshore areas. The survey will provide valuable information for the exploration of both mineral and hydrocarbon resources.

The area between Uummannaq and Prøven is characterised by an Archaean crystalline basement, an impressive succession of Palaeoproterozoic sediments intruded by a granitic complex, minor outcrops of down faulted Cretaceous sediments, and Tertiary plateau basalts. The Archaean rocks, which have been correlated with similar rocks on neighbouring Baffin Island in Canada, were folded and metamorphosed during the Hudsonian orogeny c. 1.85 Ga and intruded by a 1.65 Ga old dolerite dyke swarm.

The Palaeoproterozoic Karrat Group hosts the now exhausted Black Angel lead-zinc deposit which was mined 1973–1990. Similar marble-hosted lead-zinc occurrences at other localities indicate an additional potential for this type of mineralisation. The clastic rocks of the Karrat Group comprise extensive sulphide facies iron-formation and vein-type mineralisation with base and precious metals. Additionally, the group offers a potential for shale-hosted sulphides and turbedite-gold-bearing veins and shear zones. The Tertiary volcanic rocks have units of extremely reduced lavas with native iron, indicating a potential for Ni-Cu-PGM Norilsk-type occurrences.


Survey area Central West Greenland.
Survey bounded by -56o24' 72o12'
-50o54' 72o12'
-50o15' 72o00'
-50o15' 70o55'
-54o55' 70o55'
-54o55' 70o55'
-54o55' 70o30'
-56o00' 70o30'
-56o00' 71o42'
-56o24' 72o00'
Period Data acquisition started at the end of May 2001 and was completed September 2001.
Survey specifications The survey includes measurements of the magnetic total field.

The regular line direction is north-south with orthogonal tie-lines. The regular lines has a separation of 500 metres whereas the tie-lines are flown with a spacing of 5000 metres.

Survey terrain clearance is 300 metres (draped).

Areal extent 3136 km2
Acquisition and processing Sander Geophysics Ltd.
Data and maps
  • Digital line and grid archives on CD-ROM
  • Maps of the following parameters:
    • Flight lines
    • Total magnetic intensity with contour lines
    • Total magnetic intensity contours
    • First vertical derivative of the total magnetic intensity
    • Shadow of the total magnetic intensity
Examples of maps
  • Map of survey area (see above)
Products available from GEUS Digital data with survey report and maps will be released - see How to order products.
Financed by The Government of Greenland.
Selected references n.a.
Further information Contact GEUS, Department of Petrology and Economic Geology, at petromalm@geus.dk.
Map of the survey area in Central West Greenland - outlined by thin red line.
[Top]   Last modified: October 24, 2011 © Geological Survey of Denmark and Greenland - GEUS
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