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An early Brunhes (<0.78 Ma) age for the Lower Paleolithic tool-bearing Kozarnika cave sediments, Bulgaria

Abstract : We present a new sedimentological profile and a magnetostratigraphy of the tool-bearing Kozarnika cave sediments from Bulgaria. Modal analysis of cave infilling sedimentary texture indicates that the toolbearing layers contain a sizable fraction of sediment interpreted as loess. We also find evidence for a relatively thick and well defined normal magnetic polarity in the upper-middle part of the section interpreted as a record of the Brunhes Chron, followed down-section by reverse polarity directions interpreted as a record of the Matuyama Chron. The lowermost levels with Lower Paleolithic tools (Layers 13aec) lie in the early Brunhes at a nominal maximum age of ~0.75 Ma, while the Brunhes eMatuyama boundary (0.78 Ma) falls in Layer 13 Lower immediately below. This finding represents a conspicuous revision of previous age estimates for the same tool-bearing layers.
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https://hal.archives-ouvertes.fr/hal-01652883
Contributor : Jean-Luc Guadelli <>
Submitted on : Thursday, November 30, 2017 - 6:43:28 PM
Last modification on : Friday, December 18, 2020 - 6:46:05 PM

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Giovanni Muttoni, Nikolas Sirakov, Jean-Luc Guadelli, Dennis V. Kent, Giancarlo Scardia, et al.. An early Brunhes (<0.78 Ma) age for the Lower Paleolithic tool-bearing Kozarnika cave sediments, Bulgaria. Quaternary Science Reviews, Elsevier, 2017, 178, pp.1 - 13. ⟨10.1016/j.quascirev.2017.10.034⟩. ⟨hal-01652883⟩

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