Long-Term Denudation and Geomorphology in Scotland

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract / Description of output

Long-term geomorphology has received little recent attention in Scotland. Palaeosurfaces and major landforms, including valleys and basins, can be linked to the sub-Caledonian and sub-PermianPermian basement unconformities. The present topography was sculpted from the sub-Palaeocene unconformityUnconformity after kilometre-scale upliftUplift in response to Early PalaeogenePalaeogene magmatismMagmatism. Recent results from thermochronologyThermochronology indicate an eastward decrease in denudationDenudation across Highland Scotland that is supported by landscape persistence in eastern areas since the Devonian. A sequence of planation surfacesPlanation surfaces developed from the Late EoceneEocene onwards in intervals of slow upliftUplift and high sea levelsSea level. The highest extensive surface, the Eastern GrampianEastern Grampian Surface Surface, has been uplifted to an elevation of 500–840 m. The surfaces formed by etch processesEtch processes operating in response to changing base levels under warm-to-cool, humid environments, with extensive forests and widespread deep weathering. After upliftUplift, each planation surfacePlanation surfaces was modified through valley incision, backwearing of scarps and downwearing. PliocenePliocene sea-level fall likely led to formation of coastal platforms that included precursors of the present Hebridean strandflat.
Original languageEnglish
Title of host publicationLandscapes and Landforms of Scotland
EditorsColin K. Ballantyne, John E. Gordon
Place of PublicationCham
PublisherSpringer International Publishing Switzerland
Pages41-52
Number of pages12
ISBN (Print)978-3-030-71246-4
DOIs
Publication statusPublished - 2021

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