10.18710/F8XGVFvan der Bilt, Willem Godert MariaWillem Godert Mariavan der Bilt0000-0003-3157-451XUniversity of BergenReplication data for: Slackwater flood sediment analyses from Lake Ástjörn on northern IcelandDataverseNO2021Earth and Environmental Scienceslake sedimentstephraflood chronologyXRFEnd Member modelling (EMMA)van der Bilt, Willem Godert MariaWillem Godert Mariavan der BiltUniversity of BergenUniversity of BergenUniversity of BergenUniversity of Bergen2021-03-092023-09-28radiocarbon data10.21203/rs.3.rs-83734/v18429142669154317192300160546text/plaintext/plaintext/plaintext/plaintext/plaintext/plain1.1CC0 1.0This dataset includes all sediment analyses performed on core AST-P2-18 from lake Ástjörn on northern Iceland and include all data presented by van der Bilt et al. 2021 (Communications Earth & Environment: accepted, but at the time of uploading only available as a pre-print: 10.21203/rs.3.rs-83734/v1). Core AST-P1-18 (described in the manuscript) was not analyzed as it covered a shorter sequence. The investigated record has been extracted during the summer of 2018 with a piston coring device, analyzed throughout 2019 and covers the past 4.5 ka BP. Core AST-P2-18 was taken to investigate the timing and magnitude of glacio-volcanic megafloods from the Jökulsá á Fjöllum: lake Ástjörn sits above this river and therefore receives slackwater sedimentation when floodwaters spill into the basin. The data are organized per paper figure per .txt file: Fig. 5 includes EPMA (microprobe) data of analyzed glass shards used for tephrochronology, Fig. 6 includes all stratigraphic data generated on an ITRAX XRF core scanner/ProCon CT-ALPHA CT scanner/Mastersizer 3000 particle size analyzer as well as density and loss-on-ignition (LOI) measurements, while Fig. 7 includes grain size endmember modelling output. Additional details may be found in the appended readme file.ArcGIS, 10.4AnalySize, 1.1.266.01666716.46777816.4566.027306