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Sea-level change and inner shelf stratigraphy off Northern Ireland

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Kelley, JT, Cooper, JAG, Jackson, DWT, Belknap, DF and Quinn, R (2006) Sea-level change and inner shelf stratigraphy off Northern Ireland. MARINE GEOLOGY, 232 (1-2). pp. 1-15. [Journal article]

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Abstract

New seismic stratigraphic, vibracore and AMS C-14 dates from two sites off the Northern Ireland coast yield information on the deglacial to present sea-level history and shelf evolution of the region. A lowstand of sea level at about 30 m below present sea level recorded by fossils in a lowstand shoreline deposit occurred around 13.4 cal ka B.P. following a period of rapid isostatic uplift associated with a RSL fall of 6-7 cm/yr. Following the lowstand, contrasting styles of sedimentation characterized the two study sites. In the sheltered environment of Belfast Lough, the lowstand shoreline was overtopped and buried by transgressive facies of intertidal and shallow sub-tidal mud and sandy mud. On the high-energy Portrush coast, the inner shelf sedimentary sequence is characterized by a basal conglomerate overlain by well-sorted sands with occasional interbedded gravel. (c) 2006 Elsevier B.V. All rights reserved.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Maritime Archaeology
ID Code:14480
Deposited By:Dr Rory Quinn
Deposited On:29 Jun 2010 08:58
Last Modified:15 Jun 2011 11:17

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