Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments
The record of Icelandic volcanic events in Holocene marine sediments off SE Greenland provides evidence for the frequency and timing of atmospheric tephra plume dispersal from Iceland towards Greenland. Geochemistry of tephra abundance peaks from two SE Greenland shelf cores: MD99-2322 and JM96-1215...
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Geological Society of London
2016
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ftdatacite:10.6084/m9.figshare.3453626.v1 2023-05-15T16:24:05+02:00 Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments Jennings, Anne Thorvaldur Thordarson Zalzal, Kate Stoner, Joseph Hayward, Christopher Geirsdóttir, Áslaug Miller, Gifford 2016 https://dx.doi.org/10.6084/m9.figshare.3453626.v1 https://figshare.com/articles/Holocene_tephra_from_Iceland_and_Alaska_in_SE_Greenland_Shelf_Sediments/3453626/1 unknown Geological Society of London https://dx.doi.org/10.1144/sp398.6 https://dx.doi.org/10.6084/m9.figshare.3453626 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geology FOS Earth and related environmental sciences dataset Dataset 2016 ftdatacite https://doi.org/10.6084/m9.figshare.3453626.v1 https://doi.org/10.1144/sp398.6 https://doi.org/10.6084/m9.figshare.3453626 2021-11-05T12:55:41Z The record of Icelandic volcanic events in Holocene marine sediments off SE Greenland provides evidence for the frequency and timing of atmospheric tephra plume dispersal from Iceland towards Greenland. Geochemistry of tephra abundance peaks from two SE Greenland shelf cores: MD99-2322 and JM96-1215-2GC are compared with core MD99-2269, north Iceland shelf, to evaluate the dispersal direction of Icelandic eruptions. Glass shard counts (106–1000 µm) in MD99-2322 revealed 16 distinct cryptotephra peaks. Geochemical analyses of eight cryptotephra peaks in MD99-2322 and two in JM96-1215 indicate sources in the volcanic systems of Iceland and Alaska. A tephra layer matching in geochemistry and stratigraphy to the c. 3600 BP eruption of the Aniakchak Volcano in the Aleutian Islands was identified in JM96-1215/2GC. The Settlement Tephra (AD 871±2) and Hekla B (H-B) were identified in MD99-2322. A new marker horizon, Katla EG-6.73, was found in both SE Greenland cores. Three basaltic peaks between 9.9 and 10.4 cal kyr BP, exhibit major-element geochemistry indistinguishable from the c. 10.2 kyr Saksunarvatn tephra. These layers represent 3 out of≥seven westward and northward-dispersed Grímsvötn layers found on the SE Greenland shelf and the north Iceland shelf between 9.9 and 10.4 cal kyr BP. Dataset Greenland Hekla Iceland Katla Alaska Aleutian Islands DataCite Metadata Store (German National Library of Science and Technology) Greenland Katla ENVELOPE(-19.062,-19.062,63.631,63.631) Saksunarvatn ENVELOPE(-7.150,-7.150,62.233,62.233) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Jennings, Anne Thorvaldur Thordarson Zalzal, Kate Stoner, Joseph Hayward, Christopher Geirsdóttir, Áslaug Miller, Gifford Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
The record of Icelandic volcanic events in Holocene marine sediments off SE Greenland provides evidence for the frequency and timing of atmospheric tephra plume dispersal from Iceland towards Greenland. Geochemistry of tephra abundance peaks from two SE Greenland shelf cores: MD99-2322 and JM96-1215-2GC are compared with core MD99-2269, north Iceland shelf, to evaluate the dispersal direction of Icelandic eruptions. Glass shard counts (106–1000 µm) in MD99-2322 revealed 16 distinct cryptotephra peaks. Geochemical analyses of eight cryptotephra peaks in MD99-2322 and two in JM96-1215 indicate sources in the volcanic systems of Iceland and Alaska. A tephra layer matching in geochemistry and stratigraphy to the c. 3600 BP eruption of the Aniakchak Volcano in the Aleutian Islands was identified in JM96-1215/2GC. The Settlement Tephra (AD 871±2) and Hekla B (H-B) were identified in MD99-2322. A new marker horizon, Katla EG-6.73, was found in both SE Greenland cores. Three basaltic peaks between 9.9 and 10.4 cal kyr BP, exhibit major-element geochemistry indistinguishable from the c. 10.2 kyr Saksunarvatn tephra. These layers represent 3 out of≥seven westward and northward-dispersed Grímsvötn layers found on the SE Greenland shelf and the north Iceland shelf between 9.9 and 10.4 cal kyr BP. |
format |
Dataset |
author |
Jennings, Anne Thorvaldur Thordarson Zalzal, Kate Stoner, Joseph Hayward, Christopher Geirsdóttir, Áslaug Miller, Gifford |
author_facet |
Jennings, Anne Thorvaldur Thordarson Zalzal, Kate Stoner, Joseph Hayward, Christopher Geirsdóttir, Áslaug Miller, Gifford |
author_sort |
Jennings, Anne |
title |
Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments |
title_short |
Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments |
title_full |
Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments |
title_fullStr |
Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments |
title_full_unstemmed |
Holocene tephra from Iceland and Alaska in SE Greenland Shelf Sediments |
title_sort |
holocene tephra from iceland and alaska in se greenland shelf sediments |
publisher |
Geological Society of London |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.3453626.v1 https://figshare.com/articles/Holocene_tephra_from_Iceland_and_Alaska_in_SE_Greenland_Shelf_Sediments/3453626/1 |
long_lat |
ENVELOPE(-19.062,-19.062,63.631,63.631) ENVELOPE(-7.150,-7.150,62.233,62.233) |
geographic |
Greenland Katla Saksunarvatn |
geographic_facet |
Greenland Katla Saksunarvatn |
genre |
Greenland Hekla Iceland Katla Alaska Aleutian Islands |
genre_facet |
Greenland Hekla Iceland Katla Alaska Aleutian Islands |
op_relation |
https://dx.doi.org/10.1144/sp398.6 https://dx.doi.org/10.6084/m9.figshare.3453626 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3453626.v1 https://doi.org/10.1144/sp398.6 https://doi.org/10.6084/m9.figshare.3453626 |
_version_ |
1766012482398191616 |