TY  - SER
AU  - Greg, T Rushby
AU  - Richards, Geoff T 
AU  - Gehrels, W Roland 
AU  - Anderson, William P  
AU  - Jr,
AU  - Bateman,  Mark D 
AU  - Blake, William H 
TI  - Testing the mid-Holocene relative sea-level highstand hypothesis in North Wales, UK
PY  - 2019///
PB  - Sage
KW  - foraminifera,
KW  - glacial isostatic adjustment (GIA)
KW  -  groundwater
KW  -  Irish sea,
KW  - salt marsh
N2  - Accurate Holocene relative sea-level curves are vital for modelling future sea-level changes, particularly in regions where relative sea-level changes are dominated by isostatically induced vertical land movements. In North Wales, various glacial isostatic adjustment (GIA) models predict a mid-Holocene relative sea-level highstand between 4 and 6 ka, which is unsubstantiated by any geological sea-level data but affects the ability of geophysical models to model accurately past and future sea levels. Here, we use a newly developed foraminifera-based sea-level transfer function to produce a 3300-year-long late-Holocene relative sea-level reconstruction from a salt marsh in the Malltraeth estuary on the south Anglesey coast in North Wales. This is the longest continuous late-Holocene relative sea-level reconstruction in Northwest Europe. We combine this record with two new late-Holocene sea-level index points (SLIPs) obtained from a freshwater marsh at Rhoscolyn, Anglesey, and with previously published regional SLIPs, to produce a relative sea-level record for North Wales that spans from ca. 13,000 BP to the present. This record leaves no room for a mid-Holocene relative sea-level highstand in the region. We conclude that GIA models that include a mid-Holocene sea-level highstand for North Wales need revision before they are used in the modelling of past and future relative sea-level changes around the British Isles
UR  - https://doi.org/10.1177/0959683619854513
ER  -