Palaeomagnetism of tertiary volcanic rocks from the Ethiopian southern plateau and the Danakil block

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Published: Nov 28, 1974
Keywords:
Palaeomagnetism, Africa, Afar Triangle

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Journal of Geophysics
Vol.65 (2023), ISSN 2643-9271
Journal of Geophysics
Vol.64 (2021-2022), ISSN 2643-9271
Journal of Geophysics
Vol.63 (2019-2020), ISSN 2643-9271
Journal of Geophysics
Vols.40-62 (1974-1988), ISSN 0340-062X
Journal of Geophysics
Vols.19-39 (1953-1973), ISSN 0044-2801
Journal of Geophysics
Vols. 1-18 (1924-1944), ISSN 0044-2801

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A. Schult
Institute of Applied Geophysics, University of Munich, Germany

Abstract

Remanent magnetization of 92 samples (22 sites) collected from Oligocene basalts from the Ethiopian southern plateau (location 9.1°N, 41°E) yields a palaeomagnetic pole at 75.1°N, 170.3°E with A95 = 6.4° after AF-cleaning. This pole agrees with the Eocene-Oligocene pole for the western plateau.  Palaeomagnetic data of 125 samples (26 sites) from Early Pliocene basaltic rocks from the Danakil block (12.7°N, 42.5°E) yield a pole at 79.5°N, 258.8°E with A95 = 2.6°. The deviation of this pole position from other Miocene Pliocene poles for Africa is consistent with the hypothesis of 10° counter-clockwise rotation of the Danakil block since the Early Pliocene. On theoretical grounds however this amount of deviation may also be caused by not having completely averaged out secular variation due to insufficient sampling.


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Article Details

How to Cite
Schult, A. (1974). Palaeomagnetism of tertiary volcanic rocks from the Ethiopian southern plateau and the Danakil block. Journal of Geophysics, 40(1), 203-212. Retrieved from https://journal.geophysicsjournal.com/JofG/article/view/277
Issue
Vol 40 No 1 (1974): Journal of Geophysics
Section
Research Articles
open

References
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