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Aeromag 1998

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Description of an aeromagnetic survey in Greenland 1998
AGS Greenland - Intro page
The Aeromag 1998 survey was conducted in southern West Greenland. The survey block covered parts of the Archaean craton between 63o40'N and 65o45´N.

The Aeromag 1998 project area covers several known mineral occurrences including the Isua greenstone belt with its iron deposits and gold mineralisations, and part of the West Greenland kimberlite province. The Isua belt is seen as one of the most spectacular anomalies in the area.

In the northern half of the survey area, a irregular area between 51oW and 52oW was excluded because of coverage by an existing data set obtained in 1995 by project AEM Greenland 1995. Data from the the Aeromag 1998 project is merged with data from this project to give a homogeneous data set for the entire region.

During project Aeromag 1998, a small follow-up survey was carried out in the Disko Ø area previously surveyed by project Aeromag 1997.

The spectacular 20 000 nT anomaly of the Isua banded iron formation.
Survey area Southern West Greenland.
Period Flown from March 31th to July 13th, 1998.
Survey specifications The survey includes measurements of the magnetic total field.

The regular line direction was north-south with orthogonal tie-lines. The regular lines had a separation of 500 metres whereas the tie-lines were flown with a spacing of 5000 metres. A total of approximately 71 000 line-kilometres were acquired.

Survey terrain clearance is 300 metres (draped).

Areal extent 31 972 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 intesity with contour lines
    • First vertical derivative of the total magnetic intensity

One map in scale 1:250 000 and 13 maps in scale 1:50 000 were produced for the listed parameters.

Examples of maps
Products available from GEUS Digital data with survey report and maps - see How to order products.
Financed by The Government of Greenland.
Selected references Rasmussen & Thorning 1999; Wendorff 1998.
Further information Contact GEUS, Department of Petrology and Economic Geology, at petromalm@geus.dk.
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