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| Titel |
Provenance analysis of Paleoproterozoic siliciclastic sedimentary rocks of the Fennoscandian Shield |
| VerfasserIn |
Claudia Gärtner, Heinrich Bahlburg, Axel Gerdes, Kornelia Scholonek, Barbara Huber, Jasper Berndt |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250079381
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| Zusammenfassung |
| Detrital zircon geochronology is an important tool to investigate the provenance of
siliciclastic sediments. We present detrital zircon U-Pb geochronological results
combined with Hf isotope and whole rock geochemical data from Paleoproterozoic
siliciclastic sediments from the Pechenga and Imandra-Varzuga greenstone belts of
Fennoscandia to determine source rocks and provenance areas of the detrital zircons
and sedimentary rocks. Furthermore, the light and heavy mineral composition was
analysed to further constrain sources of the detritus deposited in the Paleoproterozoic
basins. Detrital zircon geochronological analysis obtained ages from 3700 Ma up to
c. 1900 Ma with an age range between 2900 and 2600 Ma dominating in most
samples. This interval coincides with a period of crustal growth in Fennoscandia
during accumulation of the supercontinent Kenorland and suggests zircon derivation
from cratonic areas and the Archean Fennoscandia basement. Zircons with ages |
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