Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001geoji.145..233b&link_type=abstract
Geophysical Journal International, Volume 145, Issue 1, pp. 233-245.
Astronomy and Astrophysics
Astronomy
7
Aegean, Inclination, Lesbos, Miocene, Palaeomagnetism
Scientific paper
Palaeomagnetic results for 44 sites in 16-22Ma volcanic rocks from Lesbos, NE Aegean, yield a mean pole at 81.8°N, 178.1°E, K=9.0, A95=7.6°. The mean direction for these sites (D=4.3°, I=48.5°, k=10.8, α95=6.9°) is 5.9°+/-6.1° shallower than the reference direction for Miocene Lesbos calculated from Besse & Courtillot (1991). Combining these new data with previous work yields a mean inclination that is 5.6°+/-4.7° too shallow. Experimental problems, magnetic anisotropy, the magnetic terrain effect, geomagnetic anomalies, and problems with the reference path all seem unable to account for this observation. Shallow inclinations are a common feature of the Aegean region: 17 of 18 palaeomagnetic studies on Cenozoic igneous rocks have returned an inclination that is shallower than expected. Northward motion of the Aegean block by ~500km with respect to northern Europe would account for this observation.
Atzemoglou Artemios
Beck Myrl E.
Burmester Russell F.
Kondopoulou Despina P.
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