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The Seven Islands, Svalbard: glaciation at the margin

Alexanderson, Helena LU ; Schomacker, Anders ; Farnsworth, Wesley R. ; Noormets, Riko ; Kirchner, Nina and Ingolfsson, Olafur (2018) 6th PastGateways conference and workshop
Abstract
On the Seven Islands, north of Nordaustlandet, Svalbard, decreasing snow cover has made previously inaccessible stratigraphic sections in coastal cliffs possible to investigate. Sections on two of the islands, Phippsøya and Parryøya, reveal mainly raised marine deposits, representing one or more coarsening upward sequences (emergence cycles) at each site, which in turn imply preceding regional glaciations (cf. Alexanderson et al. in press). Optically stimulated luminescence (OSL) ages are pending but radiocarbon (14C) ages and correlation to a previously studied site on Phippsøya (Forman and Ingólfsson 2000) suggest at least two events that occurred during the late Weichselian-early Holocene and prior to 40 14C ka BP, respectively. These... (More)
On the Seven Islands, north of Nordaustlandet, Svalbard, decreasing snow cover has made previously inaccessible stratigraphic sections in coastal cliffs possible to investigate. Sections on two of the islands, Phippsøya and Parryøya, reveal mainly raised marine deposits, representing one or more coarsening upward sequences (emergence cycles) at each site, which in turn imply preceding regional glaciations (cf. Alexanderson et al. in press). Optically stimulated luminescence (OSL) ages are pending but radiocarbon (14C) ages and correlation to a previously studied site on Phippsøya (Forman and Ingólfsson 2000) suggest at least two events that occurred during the late Weichselian-early Holocene and prior to 40 14C ka BP, respectively. These results, along with observations of postglacial land uplift and of transport of erratic boulders to the islands, provide information on the glacial history and dynamics of an area close to the margin of the Svalbard-Barents Sea ice sheet.

References
Alexanderson, H., Henriksen, M., Ryen. H.T., Landvik, J.Y. and Peterson, G. in press. 200 ka of glacial events in NW Svalbard: An emergence cycle facies model and regional correlations. arktos.
Forman, S.L. and Ingólfsson, Ó, 2000. Late Weichselian glacial history and postglacial emergence of Phippsøya, Sjuøyane, northern Svalbard: a comparison of modelled and empirical estimates of a glacial-rebound hinge line. Boreas 29, 16-25. (Less)
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author
; ; ; ; and
organization
publishing date
type
Contribution to conference
publication status
published
subject
conference name
6th PastGateways conference and workshop
conference location
Durham, United Kingdom
conference dates
2018-05-16 - 2018-05-20
project
Glacial history of Svalbard
language
English
LU publication?
yes
id
b9d8d74e-69ee-412f-89a6-b78b29e05d23
alternative location
http://www.palaeoarc.no/wp-content/uploads/2018/07/Durham-UK-2018.pdf
date added to LUP
2019-05-30 19:17:05
date last changed
2019-06-04 15:42:01
@misc{b9d8d74e-69ee-412f-89a6-b78b29e05d23,
  abstract     = {{On the Seven Islands, north of Nordaustlandet, Svalbard, decreasing snow cover has made previously inaccessible stratigraphic sections in coastal cliffs possible to investigate. Sections on two of the islands, Phippsøya and Parryøya, reveal mainly raised marine deposits, representing one or more coarsening upward sequences (emergence cycles) at each site, which in turn imply preceding regional glaciations (cf. Alexanderson et al. in press). Optically stimulated luminescence (OSL) ages are pending but radiocarbon (14C) ages and correlation to a previously studied site on Phippsøya (Forman and Ingólfsson 2000) suggest at least two events that occurred during the late Weichselian-early Holocene and prior to 40 14C ka BP, respectively. These results, along with observations of postglacial land uplift and of transport of erratic boulders to the islands, provide information on the glacial history and dynamics of an area close to the margin of the Svalbard-Barents Sea ice sheet.<br/><br/>References<br/>Alexanderson, H., Henriksen, M., Ryen. H.T., Landvik, J.Y. and Peterson, G. in press. 200 ka of glacial events in NW Svalbard: An emergence cycle facies model and regional correlations. arktos. <br/>Forman, S.L. and Ingólfsson, Ó, 2000. Late Weichselian glacial history and postglacial emergence of Phippsøya, Sjuøyane, northern Svalbard: a comparison of modelled and empirical estimates of a glacial-rebound hinge line. Boreas 29, 16-25.}},
  author       = {{Alexanderson, Helena and Schomacker, Anders and Farnsworth, Wesley R. and Noormets, Riko and Kirchner, Nina and Ingolfsson, Olafur}},
  language     = {{eng}},
  title        = {{The Seven Islands, Svalbard: glaciation at the margin}},
  url          = {{http://www.palaeoarc.no/wp-content/uploads/2018/07/Durham-UK-2018.pdf}},
  year         = {{2018}},
}