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Tanaka et al. 1995

Tanaka, H., Kono, M. and Kaneko, S. (1995). Paleosecular Variation of Direction and Intensity from Two Pliocene-Pleistocene Lava Sections in Southwestern Iceland. Journal of Geomagnetism and Geoelectricity 47(1): 89-102. doi: 10.5636/jgg.47.89.

Two lava sections in southwestern Iceland were revisited; section IG of Kristjansson et al. (1988) of Brunhes chron age and section K of Wilson et al. (1972) of early Matuyama chron age. Paleodirections obtained from 22 lavas at the former section do not seem to have averaged out the secular variation completely because of their small angular standard deviation, and this suggests rapid accumulation of the lavas. The latter section consists of 29 lavas and contains the Gauss to Matuyama transition near its base. The time interval during which the lavas at this section were erupted also seems to be short, judging from the small directional dispersion. Thelliers' paleointensity method was also applied to the samples from this section. A characteristic low paleointensity was obtained from the transitional lava flow. However, low paleointensities were also obtained from the lavas which erupted some time after the transition, and which record directions close to those of an axial geomagnetic dipole.

BACKGROUND DATA FILES

	Abstract

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	Table 3B

	Sampling

Keywords
geomagnetic-field, eastern iceland, paleointensity determination, paleomagnetic field, secular variation, thelliers method, late tertiary, magnitude, reversals, magnetostratigraphy

Journal
Journal of Geomagnetism and Geoelectricity
http://www.terrapub.co.jp/journals/EPS/JGG/

Publisher
Terra Scientific Publishing Co., Tokyo
5-27-19 Okusawa
Setagaya-ku, Tokyo 158-0083
Japan
+81-3-3781-7500
+81-3-3718-4406
gj@ess.sci.osaka-u.ac.jp