Towards improved empirical isobase models of Holocene land uplift for mainland Scotland, UK

Smith, D.E., Fretwell, P.T., Cullingford, R.A. and Firth, C.R. (2006) Towards improved empirical isobase models of Holocene land uplift for mainland Scotland, UK Philosophical Transactions of the Royal Society A, 364 (1841). pp. 949-972. ISSN 1471-2962

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Abstract

A new approach to modelling patterns of glacio-isostatic land uplift during the Holocene in mainland Scotland, UK, is described. The approach is based upon altitude measurements at the inner margin or locally highest point of raised estuarine surfaces dated by radiocarbon assay supported by microfossil analyses. 2241 altitudes have been analysed by a technique new to studies of former sea-levels, Gaussian Trend Surface Analysis, and isobase models for four Holocene shorelines: the Holocene Storegga Slide tsunami shoreline, abandoned rapidly circa 7900 sidereal years BP; the Main Postglacial shoreline, abandoned during circa 6400–7700 sidereal years BP; the Blairdrummond shoreline, abandoned during circa 4500–5800 sidereal years BP, and a speculative fourth shoreline, the Wigtown shoreline, abandoned during circa 1520–3700 sidereal years BP, are shown in a series of maps. The implications of the shoreline patterns for glaicio-isostasy in the area are discussed. It is maintained that the statistical technique used enables broad estimates to be made of nearshore sea surface change.

Item Type: Journal article
Uncontrolled Keywords: Gaussian trend surface; isobase; Holocene Storegga Slide tsunami shoreline; Main Postglacial shoreline; Blairdrummond shoreline; Wigtown shoreline
Subjects: F000 Physical Sciences > F800 Physical Geography and Environmental Sciences > F850 Environmental Sciences
DOI (a stable link to the resource): 10.1098/rsta.2006.1748
Faculties: Faculty of Science and Engineering > School of Environment and Technology > Applied Geosciences
Faculty of Science and Engineering > School of Environment and Technology
Depositing User: editor environment
Date Deposited: 23 Nov 2006
Last Modified: 19 Jun 2013 10:27
URI: http://eprints.brighton.ac.uk/id/eprint/1157

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