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Journal Article

Late Pleistocene to Holocene event stratigraphy of Lake Hallstatt (Salzkammergut, Austria): revealed by the Hipercorig drilling system and borehole logging

Authors

Ortler,  Marcel
External Organizations;

/persons/resource/brau

Brauer,  A.
4.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Fabbri,  Stefano C.
External Organizations;

Haas,  Jean Nicolas
External Organizations;

Hajdas,  Irka
External Organizations;

Kowarik,  Kerstin
External Organizations;

/persons/resource/jkueck

Kück,  Jochem
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Reschreiter,  Hans
External Organizations;

Strasser,  Michael
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Fulltext (public)

5025451.pdf
(Publisher version), 9MB

Supplementary Material (public)
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Citation

Ortler, M., Brauer, A., Fabbri, S. C., Haas, J. N., Hajdas, I., Kowarik, K., Kück, J., Reschreiter, H., Strasser, M. (2024): Late Pleistocene to Holocene event stratigraphy of Lake Hallstatt (Salzkammergut, Austria): revealed by the Hipercorig drilling system and borehole logging. - Scientific drilling: reports on deep earth sampling and monitoring, 33, 1, 1-19.
https://doi.org/10.5194/sd-33-1-2024


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025451
Abstract
The Hipercorig Hallstatt History (H3) project aims to unravel the entire Late Glacial to Holocene sedimentary succession recording past climate, environment, natural hazard impacts, human–environment interactions, and prehistoric mining history. We successfully cored 51 m of the sedimentary succession of Lake Hallstatt, revealing a high-resolution Late Pleistocene to Holocene sediment record, overcoming the previous coring limit of 15.63 m (dated to ∼ 2.3 ka cal BP). The novel drilling platform Hipercorig allows the recovery of undisturbed long cores and the acquisition of borehole logging data of deep lakes. The sedimentary record is spliced to a composite core profile, and for the first time borehole logging data are linked to a core–log seismic correlation of an intra-mountainous lake of the Eastern Alps. The recovered sequence consists of two major lithostratigraphic units: (i) Unit 1 (Holocene, 0–41.7 m below lake floor) with 10 (up to 5.1 m thick) instantaneous deposits and (ii) Unit 2 (Late Pleistocene, > 41.7 m below lake floor). The Late Pleistocene sediments comprise the Younger Dryas and the deepest recovered sediments likely date back to the Allerød interstadial. Within the Holocene, six different periods are observed in the core and borehole logging data, showing distinct physical property fluctuations and an overall increase in sedimentation rate upcore. Lake Hallstatt provides a unique prehistoric archive, being located within the UNESCO World Heritage area Hallstatt–Dachstein/Salzkammergut, a region with a rich history of human salt mining dating back to 3400 cal BP (Middle/Late Bronze Age) and one of the oldest documented cultural landscapes worldwide.