Late Pleistocene paleomagnetic secular variation from the Sea of Galilee, Israel

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Abstract

Stable magnetization of laminated lacustrine Lisan Formation show typical paleomagnetic secular variation and a possible geomagnetic field excursion. 14C ages from the top and assumed 0.9 mm/yr deposition rate constrain the recorded section between 29-28 ka and 22-23 ka. Samples were recovered from two trenches at the southwestern shore of the Sea of Galilee, a graben within the Dead Sea Transform system. The angle between the two site mean directions is 21°, but retilting the beds to horizontal reduces it to 7°, indicating pre-folding, probably depositional magnetization. Aberrations of field directions at one locality, where VGPs deviate >40° from the geographic north, and low NRM intensities between 29-28 ka and 25- 24 ka, are contemporaneous with the Mono Lake Excursion. If the correlation is correct, the new data support the hypothesis that the excursion was global, justifying its utilization as a chronological datum.

Original languageEnglish
Pages (from-to)11-1-11-4
JournalGeophysical Research Letters
Volume29
Issue number21
DOIs
StatePublished - 1 Nov 2002

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