Statistics
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..42..437s&link_type=abstract
Earth and Planetary Science Letters, Volume 42, Issue 3, p. 437-443.
Statistics
6
Scientific paper
The natural remanent magnetization of 22 out of a total of 31 oriented cores from the layered series of the Skaergaard gabbroic intrusion (age: 55 m.y.) in East Greenland shows good stability in thermal and AF testing. The average direction of 22 AF and 9 thermally treated specimens is D = 170°, I = -59°, α95 = 4.2 before correction for tilt. The mean directions after rotation around strike to horizontal and after rotation to original attitudes suggested by others yields poorer population statistics. It is therefore concluded that flexuring took place between solidification and acquisition of remanent magnetization, a range in temperature of about 500°C which may represent an interval of somewhat less than 250,000 years. No evidence for secular variation is observed which may also suggest slow cooling through the blocking temperature range. The polarity is reversed and the pole position without ``tilt correction'' is 165°E, 61°N, dm = 6.2, dp = 4.6, which is similar to pole positions reported by others for the overlying slightly older basalt.
Cattroll H. M.
Coleman L. C.
Schwarz Erik J.
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