Geomorphological evidence from the Lleyn Peninsula constraining models of the magnitude and rate of isostatic rebound during deglaciation of the Irish Sea Basin

✍ Scribed by Danny McCarroll

• Book ID: 102846335
• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 567 KB
• Volume: 30
• Category: Article
• ISSN: 0072-1050
• DOI: 10.1002/gj.3350300206

✦ Synopsis

A stepped series of sand and gravel terraces on the Lleyn peninsula of North Wales is used to test the magnitude and rate of isostatic depression required by the recently proposed glacimarine model of deglaciation of the Irish Sea Rasin. A relative sea-level fall of 70 m is required while the ice remained pinned at the north Lleyn coast. Even taking the maximum known rate of isostatic uplift, the margin would have to remain stationary for 1400 years. It seems more reasonable to interpret the Lleyn terraces, and similar features around the Irish Sea Rasin, as glacifluvial and glacilacustrine. KEY WORDS glaciation; Irish Sea; glacimarine model; sand and gravel terraces; isostatic rebound; Lleyn peninsula