Abstract
Some 1900 orientated palaeomagnetic samples were collected from 372 sites in central and western North Greenland in 1985 covering the complete rock sequence from the Precambrian crystalline basement to the Upper Cretaceous dolerite dykes. More than 1100 susceptibility measurements from 91 sites were measured in situ on as many rock units as possibie with susceptibilities above 10-4 SI units. The susceptibilities in the region span 4 orders of magnitude, but the geometrical mean values of major rock groups are well clustered and well defined suggesting that indirect subsurface mapping by aeromagnetic surveying may be a feasible tool for future investigations.
Highlights
Some 1900 orientated palaeomagnetic samples were collected from 372 sites in central and western North Greenland in 1985 covering the complete rock sequence from the Precambrian crystalline basement to the Upper Cretaceous dolerite dykes
An almost complete palaeomagnetic collection through the exposed rock sequence was established in 1985, and this will complement and enhance the palaeomagnetic magnetostratigraphic and polar wander investigations based on collections made during GGU's work in eastern North Greenland in 1979 and 1980 (Abrahamsen, 1980; Abrahamsen & Marcussen, 1980; Marcussen, 1981a, 1981b; Marcussen & Abrahamsen, 1983; Funder et al, 1985)
The highest scatter in susceptibility was found in the Precambrian crystalline basement at the head of Victoria Fjord, where the site mean values for the gneisses cover more than two orders of magnitude, with a mean value for all gneiss determinations of 1.2 . 10-3 SI ± 35 to 25%
Summary
Some 1900 orientated palaeomagnetic samples were collected from 372 sites in central and western North Greenland in 1985 covering the complete rock sequence from the Precambrian crystalline basement to the Upper Cretaceous dolerite dykes. We present a list of formations, sequences, dykes and metamorphic suites collected during the 1985 season, the relevant number of sites and samples, and the particular purpose of each sampling programme.
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 call
