Advanced

Postglacial sedimentary and geomorphological evolution of a small sub-Antarctic fjord landscape, Stromness Bay, South Georgia

Van der Putten, Nathalie LU ; Verbruggen, Cyriel ; Alexanderson, Helena LU ; Björck, Svante LU and Van de Vijver, Bart (2013) In Antarctic Science 25(3). p.409-419
Abstract
A detailed stratigraphical, palaeoecological and geomorphological reconstruction of a fjord head on South Georgia (Husvik, Stromness Bay) is presented. Six sites were chosen to reconstruct the lithostratigraphy of the area by means of coring. A maximum depth of 11m was attained and the sediments encountered vary from coarse gravel over sands to fine silts with, in some cases, intercalated peat layers. Diatom analysis allowed determination of whether the sedimentological units were deposited in a marine or freshwater environment. Six radiocarbon dates constrain the chronology. Deglaciation of the area was completed in the early Holocene and the postglacial geomorphological evolution of Husdal (unofficial name) was controlled by... (More)
A detailed stratigraphical, palaeoecological and geomorphological reconstruction of a fjord head on South Georgia (Husvik, Stromness Bay) is presented. Six sites were chosen to reconstruct the lithostratigraphy of the area by means of coring. A maximum depth of 11m was attained and the sediments encountered vary from coarse gravel over sands to fine silts with, in some cases, intercalated peat layers. Diatom analysis allowed determination of whether the sedimentological units were deposited in a marine or freshwater environment. Six radiocarbon dates constrain the chronology. Deglaciation of the area was completed in the early Holocene and the postglacial geomorphological evolution of Husdal (unofficial name) was controlled by fluvio-deltaic deposition and sea level changes. Relative sea level rise was faster than, or kept pace with the isostatic rebound of the land. Our results challenge the presence of Late Glacial and Holocene raised beach deposits in the area as reported in earlier geomorphological studies. (Less)
Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
diatoms, Holocene relative sea level, raised beaches, stratigraphy, sub-Antarctic island
in
Antarctic Science
volume
25
issue
3
pages
409 - 419
publisher
Wiley-Blackwell
external identifiers
  • wos:000319216500010
  • scopus:84878470157
ISSN
1365-2079
DOI
10.1017/S0954102012000880
language
English
LU publication?
yes
id
60a85571-1238-4d08-ba65-5f341fd9f3bd (old id 3931421)
date added to LUP
2016-04-01 10:56:19
date last changed
2020-01-12 06:22:19
@article{60a85571-1238-4d08-ba65-5f341fd9f3bd,
  abstract     = {A detailed stratigraphical, palaeoecological and geomorphological reconstruction of a fjord head on South Georgia (Husvik, Stromness Bay) is presented. Six sites were chosen to reconstruct the lithostratigraphy of the area by means of coring. A maximum depth of 11m was attained and the sediments encountered vary from coarse gravel over sands to fine silts with, in some cases, intercalated peat layers. Diatom analysis allowed determination of whether the sedimentological units were deposited in a marine or freshwater environment. Six radiocarbon dates constrain the chronology. Deglaciation of the area was completed in the early Holocene and the postglacial geomorphological evolution of Husdal (unofficial name) was controlled by fluvio-deltaic deposition and sea level changes. Relative sea level rise was faster than, or kept pace with the isostatic rebound of the land. Our results challenge the presence of Late Glacial and Holocene raised beach deposits in the area as reported in earlier geomorphological studies.},
  author       = {Van der Putten, Nathalie and Verbruggen, Cyriel and Alexanderson, Helena and Björck, Svante and Van de Vijver, Bart},
  issn         = {1365-2079},
  language     = {eng},
  number       = {3},
  pages        = {409--419},
  publisher    = {Wiley-Blackwell},
  series       = {Antarctic Science},
  title        = {Postglacial sedimentary and geomorphological evolution of a small sub-Antarctic fjord landscape, Stromness Bay, South Georgia},
  url          = {http://dx.doi.org/10.1017/S0954102012000880},
  doi          = {10.1017/S0954102012000880},
  volume       = {25},
  year         = {2013},
}