Inner shelf seismic stratigraphy off the north coast of Northern Ireland: new data on the depth of the Holocene lowstand

Andrew Cooper, JT Kelley, DF Belknap, R Quinn, J McKenna

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

New seismic stratigraphic data are presented from the inner shelf off the north coast of Northern Ireland. The sequence preserved comprises an acoustic basement of till or solid bedrock, overlain by a fine-grained, acoustically transparent unit interpreted as glacio-marine sediment. This is overlain by an upper, reflective sandy unit which contains a discontinuous but widespread internal reflector, interpreted as peat that developed during a late glacial/Holocene relative sea-level fall and continued to accumulate until; subsequent inundation. The depth of the Holocene lowstand is estimated at -30 in MSL on the basis of the seaward extent of the sandy unit and its intercalated peaty horizons, the presence of erosional notches and a widespread break in slope at this depth. The lowstand is not definitively dated but on the basis of dated deposits in adjacent locations is inferred to have occurred between 10 000 and 11000 14C yr BP. (C) 2002 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)369-387
JournalMarine Geology
Volume186
Issue number3-4
Early online date30 May 2002
DOIs
Publication statusPublished - 10 Jul 2002

Fingerprint Dive into the research topics of 'Inner shelf seismic stratigraphy off the north coast of Northern Ireland: new data on the depth of the Holocene lowstand'. Together they form a unique fingerprint.

  • Cite this