Microdiamonds in a megacrystic garnet websterite pod from Bardane on the island of Fjørtoft, western Norway: Evidence for diamond formation in mantle rocks during deep continental subduction

Research Article| November 01, 2002 Microdiamonds in a megacrystic garnet websterite pod from Bardane on the island of Fjørtoft, western Norway: Evidence for diamond formation in mantle rocks during deep continental subduction Herman L.M. van Roermund; Herman L.M. van Roermund 1Faculty of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, Netherlands Search for other works by this author on: GSW Google Scholar D. Anthony Carswell; D. Anthony Carswell 2Department of Geography, University of Sheffield, Dainton Building, Brookhill, Sheffield S3 7HF, UK Search for other works by this author on: GSW Google Scholar Martyn R. Drury; Martyn R. Drury 3Faculty of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, Netherlands Search for other works by this author on: GSW Google Scholar Tjerk C. Heijboer Tjerk C. Heijboer 3Faculty of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, Netherlands Search for other works by this author on: GSW Google Scholar Author and Article Information Herman L.M. van Roermund 1Faculty of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, Netherlands D. Anthony Carswell 2Department of Geography, University of Sheffield, Dainton Building, Brookhill, Sheffield S3 7HF, UK Martyn R. Drury 3Faculty of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, Netherlands Tjerk C. Heijboer 3Faculty of Earth Sciences, Utrecht University, P.O. Box 80.021, 3508 TA, Utrecht, Netherlands Publisher: Geological Society of America Received: 09 Apr 2002 Revision Received: 27 Jun 2002 Accepted: 09 Jul 2002 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2002) 30 (11): 959–962. https://doi.org/10.1130/0091-7613(2002)030<0959:MIAMGW>2.0.CO;2 Article history Received: 09 Apr 2002 Revision Received: 27 Jun 2002 Accepted: 09 Jul 2002 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Herman L.M. van Roermund, D. Anthony Carswell, Martyn R. Drury, Tjerk C. Heijboer; Microdiamonds in a megacrystic garnet websterite pod from Bardane on the island of Fjørtoft, western Norway: Evidence for diamond formation in mantle rocks during deep continental subduction. Geology 2002;; 30 (11): 959–962. doi: https://doi.org/10.1130/0091-7613(2002)030<0959:MIAMGW>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 We report the startling discovery of in situ microdiamonds in a mantle-derived peridotite lens from Bardane, Fjørtoft, western Norway. Diamonds occur within multiphase solid-inclusion assemblages within spinels that are, in turn, inclusions within garnets. Euhedral inclusion-host morphologies of spinel and mineral chemistries all indicate diamond growth from infiltrating fluids at ultrahigh pressure (P) and moderate temperature. These results imply that the Bardane peridotite lens was present within a continental subduction zone at depths of ≥130 km. This paper not only documents the first discovery of in situ microdiamonds within the Caledonian ultrahigh-pressure terrane of western Norway, but also represents the first known global occurrence of subduction-related diamond formation within mantle rocks that have been incorporated into a major continental plate collision zone. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.