Description: Four different age-depth models have been calculated for a new sediment profile (HZM19) from Holzmaar (425 m a.s.l., 50°7'8'' N, 6°52' 45'' E) using Bayesian statistics with Bacon (version 4.1.1) for the R programming language and the latest radiocarbon calibration curve Intcal20. Model A is based on previously published radiocarbon measurements only, while the three Models B, C and D integrate the previously published varve chronology (VT-99) applying different approaches. Model B rests upon radiocarbon data, while parameter settings are derived from sedimentation rates of VT-99. Model C is based on radiocarbon dates and on VT-99 as normal-distributed tie-points. Model D is segmented into four sections: Sections 1 and 3 are based on VT-99, whereas Sections 2 and 4 are based on Bacon models including additional information from VT-99. All models cover an age range of approx. 16,000 years for a composite depth of 14.6 m. The varve chronology was transferred to HZM19 using 43 predefined marker layers and 41 radiocarbon sampling positions with their specific VT-99 age and error. In addition, Pb-210 and Cs-137 activities (61 samples with a thickness of 2 cm each) have been measured for the top of HZM19. With this exercise, VT-99 was updated and efficiently applied to HZM19 providing a very precise age-depth model for these new sediment cores, which will value all ongoing and high-resolution investigations for a better understanding of decadal Holocene environmental and climatic variabilities.
Global identifier:
Doi(
"10.1594/PANGAEA.949393",
)
Dataset
Origins: /Wissenschaft/PANGAEA
Tags: Kalibrierung ? Daten ? Sediment ? Modellierung ? Sedimentation ? Bayesian Modeling ? Holzmaar ? age-depth model ? radiometric dating ? varves ?
Bounding boxes: 6.883332999999998° .. 6.883332999999998° x 50.11667° .. 50.11667°
License: cc-by/4.0
Language: Englisch/English
Issued: 2022-10-05
Modified: 2023-01-10
Time ranges: 2019-08-11 - 2019-08-17
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