New cosmogenic nuclide burial-dating model indicates onset of major glaciation in the Alps during the Middle Pleistocene Transition
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F20%3A00531374" target="_blank" >RIV/67985530:_____/20:00531374 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0012821X20304350" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0012821X20304350</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.epsl.2020.116491" target="_blank" >10.1016/j.epsl.2020.116491</a>
Alternative languages
Result language
angličtina
Original language name
New cosmogenic nuclide burial-dating model indicates onset of major glaciation in the Alps during the Middle Pleistocene Transition
Original language description
A set of four outwash terraces in the northern Alpine Foreland motivated Penck and Bruckner's classical scheme of four great Alpine ice ages: Giinz, Mindel, Riss, and Wiirm. While it is now established that the Wiirm corresponds to marine isotope stages (MIS) 5d-2 (similar to 117-14 ka) and the Riss type locality to MIS 6 (similar to 191-130 ka), there is no consensus regarding the age of the older glaciations. The two oldest terraces, known as TIOhere Deckenschotter (HDS) and Tiefere Deckenschotter (TDS) in Switzerland and neighbouring Germany, contain interbedded tills that directly indicate the first arrival of glaciers into the northern Alpine Foreland. Here, we set out to constrain the timing of the HDS, which signal the first major glaciations in the Alps. To achieve this goal, we devised a new burial-dating model tailored to glaciogenic sediments: P-PINI (Particle Pathway Inversion of Nuclide Inventories). The method applies a source-to-sink framework to a cosmogenic (BeAl)-Be-10-Al-26 inversion model accounting for variable cosmic-ray exposure and non-steady erosion. Taking published (BeAl)-Be-10-Al-26 data from five HDS sites (Feusi, Tromsberg, Siglistorf, Irchel Steig, and Irchel Hiltz) and one TDS site (Iberig), we obtain age distributions (+/- 1 sigma) that are especially well constrained for Feusi (0.93 +/- 0.13 Ma), Iberig (0.93 +/- 0.17 Ma), and Tromsberg (0.88 +/- 0.14 Ma), less well-constrained for Irchel Steig (0.69 +/- 0.25 Ma) and Siglistorf (0.94 +/- 0.27 Ma), and very poorly constrained for Irchel Hiltz (1.39 +/- 0.56 Ma). Consistent with the morphostratigraphy, which dictates that the TDS postdates the HDS, we implemented a Bayesian modelling framework, yielding an age of 0.69 +/- 0.12 Ma for Iberig (TDS) and a combined age of 0.95 +/- 0.07 Ma for the HDS sites.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Earth and Planetary Science Letters
ISSN
0012-821X
e-ISSN
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Volume of the periodical
549
Issue of the periodical within the volume
November
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
116491
UT code for WoS article
000566576500004
EID of the result in the Scopus database
2-s2.0-85089153424