Expanding the Tephrochronological Record in the Alps: Discovery of the Laacher See Tephra in Lake Plansee (Austria)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10507475" target="_blank" >RIV/00216208:11310/25:10507475 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=K2uJOI_4qJ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=K2uJOI_4qJ</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2025GC012611" target="_blank" >10.1029/2025GC012611</a>
Alternative languages
Result language
angličtina
Original language name
Expanding the Tephrochronological Record in the Alps: Discovery of the Laacher See Tephra in Lake Plansee (Austria)
Original language description
We present the first documented occurrence of the Laacher See tephra (LST) in the Eastern Alps, identified in lake Plansee, Austria. The LST is a key chronostratigraphic marker for correlating and dating Late Glacial sedimentary archives. This discovery was made by progressively narrowing down observational limits from rough estimates of potential cryptotephra presence and position to pinpointing the volcanic ash layer with great precision, using a rapid, non-destructive scanning workflow that integrates core-scanning techniques (CT, MS, XRF) with targeted high-resolution methods (mu-XRF, EPMA). This core-scanning workflow bridges the gap between rapid scanning and detailed analysis of discrete sediment samples. Notably, the detection relies not only on glass shards but also on associated tephra mineral phases, demonstrating the method's effectiveness in chemically altered, glass-poor sediments and more unconventional settings. The presence of LST in alkaline sediments of Plansee indicates a more extensive and spatially variable tephra dispersal than previously mapped, highlighting the need for a re-evaluation of established fallout models for the 13 cal ka BP eruption. This finding emphasizes the potential of sediment archives in more challenging sedimentary records (e.g., alpine lakes, paleo-lakes, alkaline lake sediments) to host cryptotephra layers and underscores the value of incorporating mineral-based detection strategies into tephrochronological workflows. By refining regional chronologies and expanding the spatial scope of eruption impact assessments, this work contributes to a deeper understanding of Late Glacial environmental changes within a precise temporal framework and paves the way for advancements in future volcanic risk assessments.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geochemistry, Geophysics, Geosystems
ISSN
1525-2027
e-ISSN
1525-2027
Volume of the periodical
26
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
e2025GC012611
UT code for WoS article
001624384800001
EID of the result in the Scopus database
2-s2.0-105023157297