Evidence for recent palaeomagnetic secular variation in lake sediments from the New Guinea Highlands

Details Evidence for recent palaeomagnetic secular variation in lake sediments from the New Guinea Highlands Evidence for recent palaeomagnetic secular variation in lake sediments from the New Guinea Highlands

Nov 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978pepi...17..300t&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 17, Issue 4, p. 300-306.

Physics

2

Scientific paper

Palaeomagnetic declination and inclination data are reported from Mackereth mini cores taken from three lake sites in Papua New Guinea. 137Cs, 210Pb and 14C dating provide a timescale for the palaeomagnetic oscillations. Tephrastratigraphy aids correlation between lakes. The palaeomagnetic data resemble the geomagnetic secular variation pattern deduced from historical observations. The new results greatly extend the latitudinal coverage of palaeomagnetic secular variation recorded in the last 104 yr. Their significance in assessing secular variation source models is discussed. The data suggest that the edge of the Pacific region of low non-dipole field activity has remained near New Guinea during the last 104 yr.

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