Unveiling the early Eurasian glaciations with new advances of 10Be-26Al burial dating
(2024) EGU General Assembly, 2024- Abstract
- Cosmogenic nuclide burial dating exploits the differential decay rate of a nuclide pair, typically 26Al and 10Be. There are three basic approaches; simple burial dating, the isochron method and P-PINI (Particle Pathway Inversion of Nuclide Inventories). The simple burial age is based on deviation from the surface production ratio assuming quick and deep burial. The isochron method incorporates multiple samples from a single stratigraphic layer and assumes steady erosion in the sediment source area. P-PINI accommodates more complicated situations, such as landscapes undergoing non-steady erosion and an eroding or accumulating sink zone. This source-to-sink model uses a Monte Carlo simulator to create a library of... (More)
- Cosmogenic nuclide burial dating exploits the differential decay rate of a nuclide pair, typically 26Al and 10Be. There are three basic approaches; simple burial dating, the isochron method and P-PINI (Particle Pathway Inversion of Nuclide Inventories). The simple burial age is based on deviation from the surface production ratio assuming quick and deep burial. The isochron method incorporates multiple samples from a single stratigraphic layer and assumes steady erosion in the sediment source area. P-PINI accommodates more complicated situations, such as landscapes undergoing non-steady erosion and an eroding or accumulating sink zone. This source-to-sink model uses a Monte Carlo simulator to create a library of plausible erosional and depositional histories and then compares those histories against measured nuclide data to derive a burial age estimate. In cases involving multiple dated layers in a section or when an independent age estimate is available, a Bayesian tool further constrains the burial age.
With the aim of constraining the timing of the Eurasian Ice Sheet at its largest known extent, we applied P-PINI at Wapenveld in the Netherlands and at Szczerców in central Poland. From a drill-core at Wapenveld we collected three sand samples from the Early Pleistocene ‘Hattem’ beds, and derived the P-PINI burial age bracketed by simple burial ages calculated from the units above and below. Szczerców is an open-cast mine exposing multiple Middle Pleistocene till units rich in cobble-sized clasts. Here, P-PINI burial ages show sensitivity to the thickness of the dated layer, a problem we resolve by including feldspar infrared-simulated luminescence dates higher up the sequence.
We discuss the pros and cons of our approach at Wapenveld and Szczerców. Burial dating multiple units in section requires considerably more lab effort but also offers important advantages that can be boosted by carefully considering which grain-size to sample, and by incorporating independent age constraints. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4f96cfa3-c79a-429f-b134-4f23ae956797
- author
- Ylä-Mella, Lotta
; Wagner, Kaleb
; Margold, Martin
; Knudsen, Mads Faurschou
; Busschers, Freek
; Bakker, Marcel
; Wachecka-Kotkowska, Lucyna
; Krzyszkowski, Dariusz
; Wieczorek, Dariusz
; Szuman-Kalita, Izabela
; Lindahl Eriksen, Birte
; Andersen, Jane Lund
; Olsen, Jesper
; Perić, Zoran
LU
; Alexanderson, Helena
LU
and Jansen, John D.
(Less) - organization
- publishing date
- 2024-03-09
- type
- Contribution to conference
- publication status
- published
- subject
- conference name
- EGU General Assembly, 2024
- conference location
- Vienna, Austria
- conference dates
- 2024-04-14 - 2024-04-19
- DOI
- 10.5194/egusphere-egu24-11574
- language
- English
- LU publication?
- yes
- id
- 4f96cfa3-c79a-429f-b134-4f23ae956797
- date added to LUP
- 2026-01-14 09:36:56
- date last changed
- 2026-01-16 14:47:34
@misc{4f96cfa3-c79a-429f-b134-4f23ae956797,
abstract = {{Cosmogenic nuclide burial dating exploits the differential decay rate of a nuclide pair, typically <sup>26</sup>Al and <sup>10</sup>Be. There are three basic approaches; simple burial dating, the isochron method and P-PINI (Particle Pathway Inversion of Nuclide Inventories). The simple burial age is based on deviation from the surface production ratio assuming quick and deep burial. The isochron method incorporates multiple samples from a single stratigraphic layer and assumes steady erosion in the sediment source area. P-PINI accommodates more complicated situations, such as landscapes undergoing non-steady erosion and an eroding or accumulating sink zone. This source-to-sink model uses a Monte Carlo simulator to create a library of plausible erosional and depositional histories and then compares those histories against measured nuclide data to derive a burial age estimate. In cases involving multiple dated layers in a section or when an independent age estimate is available, a Bayesian tool further constrains the burial age.<br/><br/>With the aim of constraining the timing of the Eurasian Ice Sheet at its largest known extent, we applied P-PINI at Wapenveld in the Netherlands and at Szczerców in central Poland. From a drill-core at Wapenveld we collected three sand samples from the Early Pleistocene ‘Hattem’ beds, and derived the P-PINI burial age bracketed by simple burial ages calculated from the units above and below. Szczerców is an open-cast mine exposing multiple Middle Pleistocene till units rich in cobble-sized clasts. Here, P-PINI burial ages show sensitivity to the thickness of the dated layer, a problem we resolve by including feldspar infrared-simulated luminescence dates higher up the sequence.<br/><br/>We discuss the pros and cons of our approach at Wapenveld and Szczerców. Burial dating multiple units in section requires considerably more lab effort but also offers important advantages that can be boosted by carefully considering which grain-size to sample, and by incorporating independent age constraints.}},
author = {{Ylä-Mella, Lotta and Wagner, Kaleb and Margold, Martin and Knudsen, Mads Faurschou and Busschers, Freek and Bakker, Marcel and Wachecka-Kotkowska, Lucyna and Krzyszkowski, Dariusz and Wieczorek, Dariusz and Szuman-Kalita, Izabela and Lindahl Eriksen, Birte and Andersen, Jane Lund and Olsen, Jesper and Perić, Zoran and Alexanderson, Helena and Jansen, John D.}},
language = {{eng}},
month = {{03}},
title = {{Unveiling the early Eurasian glaciations with new advances of <sup>10</sup>Be-<sup>26</sup>Al burial dating}},
url = {{http://dx.doi.org/10.5194/egusphere-egu24-11574}},
doi = {{10.5194/egusphere-egu24-11574}},
year = {{2024}},
}