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Cambro-Ordovician age of a metagabbro from the Wildschoenau ophiolite complex, Greywacke Supergroup (Eastern Alps, Austria); a U-Pb SHRIMP study
Georg Loth, Roland Eichhorn, Rudolf Hoell, Allen Kennedy, Peter Schauder and Frank Soellner
Cambro-Ordovician age of a metagabbro from the Wildschoenau ophiolite complex, Greywacke Supergroup (Eastern Alps, Austria); a U-Pb SHRIMP study
European Journal of Mineralogy (February 2001) 13 (1): 57-66
Cambro-Ordovician age of a metagabbro from the Wildschoenau ophiolite complex, Greywacke Supergroup (Eastern Alps, Austria); a U-Pb SHRIMP study
European Journal of Mineralogy (February 2001) 13 (1): 57-66
Index Terms/Descriptors
- absolute age
- Alps
- Austria
- Cambrian
- Central Austrian Alps
- Central Europe
- dates
- Europe
- ion probe data
- mass spectra
- metagabbro
- metaigneous rocks
- metamorphic rocks
- nesosilicates
- ophiolite complexes
- Ordovician
- orthosilicates
- Paleozoic
- SHRIMP data
- silicates
- spectra
- U/Pb
- zircon
- zircon group
- Wildschonau ophiolite complex
Latitude & Longitude
Abstract
The Wildschoenau ophiolite complex represents the lowermost and probably the oldest rock unit of the E part of the Greywacke supergroup. Within this complex, zircon grains from a metamorphosed gabbro yield a U-Pb SHRIMP age of 477 + or - 9 m.y., interpreted as the age of crystallization. This age reflects the magmatic activity in Cambro-Ordovician times and is probably related to a continental rift environment during breakup of Gondwana. The age of 477 + or - 9 m.y. is a few m.y. younger than oldest ages estimated from biostratigraphy; reasons for this difference are discussed.
ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 13
Serial Issue: 1
Title: Cambro-Ordovician age of a metagabbro from the Wildschoenau ophiolite complex, Greywacke Supergroup (Eastern Alps, Austria); a U-Pb SHRIMP study
Affiliation: Ludwig-Maximilians-Universitaet Muenchen, Institut fuer Allgemeine und Angewandte Geologie,
Munich,
Federal Republic of Germany
Pages: 57-66
Published: 200102
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller),
Stuttgart,
Federal Republic of Germany
References: 52
Accession Number: 2001-022809
Categories: Geochronology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., 2 tables, sketch map
N46°34'60" - N47°46'00", E09°52'00" - E16°34'60"
Secondary Affiliation: Bayerisches Geologisches Landesamt,
DEU,
Federal Republic of GermanyCurtin University of Technology,
AUS,
Australia
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 200108
