Physics
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pepi...30..415l&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 30, Issue 4, p. 415-421.
Physics
9
Scientific paper
Stable paleomagnetic directions in four basaltic dykes and in some associated Caledonian metamorphic rocks define high-latitude, Mesozoic paleomagnetic pole positions which are not compatible with the K-Ar age of ~250 My determined for the dykes. A monotonic increase of ~40% occurs in the potassium content of samples taken across a dyke 32 cm wide. This is accompanied by only a 1-2% variation in the K-Ar age of the samples, suggesting the absence of any significant level of initial argon. Titanomagnetite grains having bulk compositions around x = 0.6 have suffered extensive low-temperature alteration, forming assemblages of ferri-rutile granules in a matrix of pure magnetite. The complete remagnetisation of both the dykes and the associated country rocks is probably an expression of a VRM acquired at elevated temperatures (150-500°C) at the emplacement depth of the dykes. A stable remanent magnetisation was locked-in during uplift of the area, probably related to the Kimmerian basin development in the adjacent North Sea and the epeirogenic uplift of western Fennoscandia.
Løvlie Reidar
Mitchell John G.
No associations
LandOfFree
Complete remagnetization of some Permian dykes from western Norway induced during burial/uplift does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Complete remagnetization of some Permian dykes from western Norway induced during burial/uplift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Complete remagnetization of some Permian dykes from western Norway induced during burial/uplift will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-931502