uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Neoproterozoic metamorphic evolution of the Isbjornhamna Group rocks from south-western Svalbard
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Solid Earth Geology.
Show others and affiliations
2010 (English)In: Polar Research, ISSN 0800-0395, Vol. 29, no 3, 250-264 p.Article in journal (Refereed) Published
Abstract [en]

A metamorphosed volcano-sedimentary complex constitutes the Caledonian basement in the south-western part of Wedel Jarlsberg Land, Svalbard. Field, textural and previous thermochronologic data indicate a weak, localized metamorphic Caledonian overprint (M2). Deformed M1 isograds and variation in pressure-temperature estimates indicate a pervasive Neoproterozoic amphibolite-facies metamorphism that pre-dates large-scale Caledonian age folding. Garnet-biotite and garnet-Al silicate-plagioclase (GASP) geothermobarometry of the Isbjornhamna Group mica schists, and their comparison with the K2O-FeO-MgO-Al2O3-SiO2-H2O (KFMASH) petrogenetic grid, indicates a peak pressure of ca. 11 kbar, and a peak temperature of ca. 670 degrees C during M1 metamorphism. A cooling rate of ca. 5 degrees C My(-1) is estimated on the basis of geothermobarometry and the available U-Th-total Pb and Ar-Ar data.

Place, publisher, year, edition, pages
2010. Vol. 29, no 3, 250-264 p.
Keyword [en]
Caledonides, geothermobarometry, metapelites, Neoproterozoic, Spitsbergen
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-148472DOI: 10.1111/j.1751-8369.2010.00186.xISI: 000285685000002OAI: oai:DiVA.org:uu-148472DiVA: diva2:402346
Available from: 2011-03-08 Created: 2011-03-07 Last updated: 2012-12-17Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Majka, Jaroslaw
By organisation
Solid Earth Geology
In the same journal
Polar Research
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 221 hits
ReferencesLink to record
Permanent link

Direct link