Fast tectonometamorphism and exhumation in the type area of the Barrovian and Buchan zones

Research Article| May 01, 2000 Fast tectonometamorphism and exhumation in the type area of the Barrovian and Buchan zones G.J.H. Oliver; G.J.H. Oliver 1Crustal Geodynamics Group, School of Geography and Geosciences, St. Andrews University, St. Andrews, Fife, Scotland KY16 9ST, UK Search for other works by this author on: GSW Google Scholar F. Chen; F. Chen 2Institut für Geochemie, Universität Tübingen, Wilhelmstrasse, 56D-72074, Tübingen, Germany Search for other works by this author on: GSW Google Scholar R. Buchwaldt; R. Buchwaldt 3Max-Planck Institut für Chemie Abteilung Geochemie, 55020 Mainz, Germany Search for other works by this author on: GSW Google Scholar E. Hegner E. Hegner 2Institut für Geochemie, Universität Tübingen, Wilhelmstrasse, 56D-72074, Tübingen, Germany Search for other works by this author on: GSW Google Scholar Geology (2000) 28 (5): 459–462. https://doi.org/10.1130/0091-7613(2000)28<459:FTAEIT>2.0.CO;2 Article history received: 21 Oct 1999 rev-recd: 02 Feb 2000 accepted: 16 Feb 2000 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation G.J.H. Oliver, F. Chen, R. Buchwaldt, E. Hegner; Fast tectonometamorphism and exhumation in the type area of the Barrovian and Buchan zones. Geology 2000;; 28 (5): 459–462. doi: https://doi.org/10.1130/0091-7613(2000)28<459:FTAEIT>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The beginning of the Grampian episode of tectonometamorphism in Scotland is dated by collision and obduction of the Ballantrae Ophiolite Complex at 478 ± 8 Ma. For the first time we have used zircon and garnet to radiometrically date the peak of the Caledonian Buchan and Barrovian tectonometamorphism in their type areas as contemporaneous at 467 ± 2.5 Ma. Detrital garnet from the neighboring Southern Uplands flysch terrane has the same radiometric age and occurs in 465 ± 2.5 Ma molasse in the Midland Valley. We show that the entire Grampian episode lasted 15 ± 2.5 m.y. and that it took fewer than 7.6 m.y. to expose high-grade rocks following the peak of metamorphism. Those who study Precambrian orogeny should note the brevity of this Scottish tectonometamorphic episode and the speed of exhumation. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.