Replication data for: Slackwater flood sediment analyses from Lake Ástjörn on northern Iceland (doi:10.18710/F8XGVF)

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Replication data for: Slackwater flood sediment analyses from Lake Ástjörn on northern Iceland

doi:10.18710/F8XGVF

DataverseNO

2021-04-07

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van der Bilt, Willem Godert Maria, 2021, "Replication data for: Slackwater flood sediment analyses from Lake Ástjörn on northern Iceland", https://doi.org/10.18710/F8XGVF, DataverseNO, V1

Replication data for: Slackwater flood sediment analyses from Lake Ástjörn on northern Iceland

doi:10.18710/F8XGVF

van der Bilt, Willem Godert Maria (University of Bergen)

University of Bergen

ArcGIS

AnalySize

DataverseNO

University of Bergen

van der Bilt, Willem Godert Maria

van der Bilt, Willem Godert Maria

2021-03-09

AST-P2-18

https://doi.org/10.18710/F8XGVF

Earth and Environmental Sciences, lake sediments, tephra, flood chronology, XRF, End Member modelling (EMMA)

This 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.

Iceland

• West Bounding Longitude: 16.467778
• East Bounding Longitude: 16.45
• South Bounding Latitude: 66.016667
• North Bounding Latitude: 66.027306

radiocarbon data

stratigraphic data

The major oxide data presented in Figure 4 is plotted with reference data from a number of studies to identify source eruptions as outlined in the manuscript (core chronology): Eiríksson, J., Larsen, G., Knudsen, K. L., Heinemeier, J., & Símonarson, L. A. (2004). Marine reservoir age variability and water mass distribution in the Iceland Sea. Quaternary Science Reviews, 23(20-22), 2247-2268. Harning, D. J., Geirsdóttir, Á., & Miller, G. H. (2018). Punctuated Holocene climate of Vestfirðir, Iceland, linked to internal/external variables and oceanographic conditions. Quaternary Science Reviews, 189, 31-42. Larsen, G., Eiríksson, J., Knudsen, K. L., & Heinemeier, J. (2002). Correlation of late Holocene terrestrial and marine tephra markers, north Iceland: implications for reservoir age changes. Polar Research, 21(2), 283-290. Óladóttir, B. A., Larsen, G., & Sigmarsson, O. (2011a). Holocene volcanic activity at Grímsvötn, Bárdarbunga and Kverkfjöll subglacial centres beneath Vatnajökull, Iceland. Bulletin of Volcanology, 73(9), 1187-1208. Óladóttir, B. A., Sigmarsson, O., Larsen, G., & Devidal, J.-L. (2011b). Provenance of basaltic tephra from Vatnajökull subglacial volcanoes, Iceland, as determined by major-and trace-element analyses. The Holocene, 21(7), 1037-1048.

Late Holocene canyon-carving floods in northern Iceland were smaller than previously reported (2021).

10.21203/rs.3.rs-83734/v1

Late Holocene canyon-carving floods in northern Iceland were smaller than previously reported (2021).

Eiríksson, J., Larsen, G., Knudsen, K. L., Heinemeier, J., & Símonarson, L. A. (2004). Marine reservoir age variability and water mass distribution in the Iceland Sea. Quaternary Science Reviews, 23(20-22), 2247-2268.

Harning, D. J., Geirsdóttir, Á., & Miller, G. H. (2018). Punctuated Holocene climate of Vestfirðir, Iceland, linked to internal/external variables and oceanographic conditions. Quaternary Science Reviews, 189, 31-42.

Larsen, G., Eiríksson, J., Knudsen, K. L., & Heinemeier, J. (2002). Correlation of late Holocene terrestrial and marine tephra markers, north Iceland: implications for reservoir age changes. Polar Research, 21(2), 283-290.

Óladóttir, B. A., Larsen, G., & Sigmarsson, O. (2011a). Holocene volcanic activity at Grímsvötn, Bárdarbunga and Kverkfjöll subglacial centres beneath Vatnajökull, Iceland. Bulletin of Volcanology, 73(9), 1187-1208.

Óladóttir, B. A., Sigmarsson, O., Larsen, G., & Devidal, J.-L. (2011b). Provenance of basaltic tephra from Vatnajökull subglacial volcanoes, Iceland, as determined by major-and trace-element analyses. The Holocene, 21(7), 1037-1048.

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Bilt_2021_DataverseNO_README_file.txt

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Bilt_2021_Figure_4_tephra_data.txt

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Bilt_2021_Figure_5_chronology.txt

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Bilt_2021_Figure_6_stratigraphy.txt

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Bilt_2021_Figure_7_EMMA.txt

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Bilt_2021_Figure_7_grain_size.txt

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