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Age, origin and significance of a new middle MIS 3 tephra horizon identified within a long-core sequence from Les Echets, France.

Abstract : A new tephra has been identified within a long core (EC 3) sequence recovered from Les Echets, near Lyon, France. This visible tephra was discovered as part of a high resolution multiproxy re-investigation of the Les Echets sequence. Independent chronological information suggests that the tephra is c. 42 000-45 000 years old, and geochemical analysis indicates that it is of basanitic composition. The latter suggests a possible origin in the Eifel; however, as yet, no other volcanic events or deposits can be correlated to the Les Echets tephra. New sedimentological and chronological data are presented indicating that the tephra falls within an interval that most likely correlates with Dansgaard-Oeschger events 12-9. Thus, this tephra could potentially be an important middle MIS 3 marker horizon in central Europe if it can be traced in other palaeorecords.
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https://halshs.archives-ouvertes.fr/halshs-00442639
Contributor : Jean-Paul Raynal <>
Submitted on : Monday, December 21, 2009 - 6:45:23 PM
Last modification on : Monday, February 22, 2021 - 2:50:02 PM

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Daniel Veres, Siwan M. Davies, Barbara Wohlfarth, Frank Preusser, Stefan Wastegard, et al.. Age, origin and significance of a new middle MIS 3 tephra horizon identified within a long-core sequence from Les Echets, France.. Boreas, Wiley, 2008, 37 (3), pp.434-443. ⟨10.1111/j.1502-3885.2008.00028.x⟩. ⟨halshs-00442639⟩

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