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

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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

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Description	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. (2021-03-09)
Subject	Earth and Environmental Sciences
Keyword	lake sediments, tephra, flood chronology, XRF, End Member modelling (EMMA)
Related Publication	Late Holocene canyon-carving floods in northern Iceland were smaller than previously reported (2021). doi: 10.21203/rs.3.rs-83734/v1
License/Data Use Agreement	CC0 1.0

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	Bilt_2021_DataverseNO_README_file.txt Plain Text - 8.2 KB Published Apr 7, 2021 17 Downloads MD5: f78270283be101bbc63a609b5d162b58	Preview "Bilt_2021_DataverseNO_README_file.txt" Access File File Access Public Download Options Plain Text Download Metadata Data File Citation EndNote XML RIS BibTeX
	Bilt_2021_Figure_4_tephra_data.txt Plain Text - 13.9 KB Published Apr 7, 2021 3 Downloads MD5: 8c255dcb227a6688810ea4bb434dd501	Preview "Bilt_2021_Figure_4_tephra_data.txt" Access File File Access Public Download Options Plain Text Download Metadata Data File Citation EndNote XML RIS BibTeX
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	Bilt_2021_Figure_6_stratigraphy.txt Plain Text - 309.8 KB Published Apr 7, 2021 12 Downloads MD5: 1e0c355824cd15065d88a87f5e248f9e	Preview "Bilt_2021_Figure_6_stratigraphy.txt" Access File File Access Public Download Options Plain Text Download Metadata Data File Citation EndNote XML RIS BibTeX
	Bilt_2021_Figure_7_EMMA.txt Plain Text - 2.9 KB Published Apr 7, 2021 9 Downloads MD5: 17bd5d25ac410b2966ed3668b167cfa6	Preview "Bilt_2021_Figure_7_EMMA.txt" Access File File Access Public Download Options Plain Text Download Metadata Data File Citation EndNote XML RIS BibTeX
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Citation Metadata

Persistent Identifier	doi:10.18710/F8XGVF
Publication Date	2021-04-07
Title	Replication data for: Slackwater flood sediment analyses from Lake Ástjörn on northern Iceland
Author	van der Bilt, Willem Godert Maria (University of Bergen) - ORCID: 0000-0003-3157-451X
Point of Contact	Use email button above to contact. van der Bilt, Willem Godert Maria (University of Bergen)
Description	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. (2021-03-09)
Subject	Earth and Environmental Sciences
Keyword	lake sediments tephra (LCSH) https://id.loc.gov/authorities/subjects/sh85144250.html flood chronology XRF (LCSH) https://id.loc.gov/authorities/subjects/sh85148744.html End Member modelling (EMMA)
Related Publication	Late Holocene canyon-carving floods in northern Iceland were smaller than previously reported (2021). doi: 10.21203/rs.3.rs-83734/v1 https://doi.org/10.21203/rs.3.rs-83734/v1
Language	English
Producer	University of Bergen (UiB) https://www.uib.no/en
Distributor	University of Bergen (University of Bergen) https://dataverse.no/dataverse/uib
Depositor	van der Bilt, Willem Godert Maria
Deposit Date	2021-03-09
Data Type	radiocarbon data; stratigraphic data
Series	AST-P2-18
Software	ArcGIS, Version: 10.4 AnalySize, Version: 1.1.2
Related Material	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.
Other Reference	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.

Geospatial Metadata

Geographic Coverage	Iceland
Geographic Bounding Box	16.467778 16.45 66.027306 66.016667

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