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Detrital zircon geochronology and provenance of the southeastern Yukon–Tanana terrane.
- Source :
- Canadian Journal of Earth Sciences; Mar2007, Vol. 44 Issue 3, p297-316, 20p, 1 Color Photograph, 3 Diagrams, 1 Chart, 3 Graphs, 3 Maps
- Publication Year :
- 2007
-
Abstract
- Two samples of late Paleozoic grit and Late Mississippian quartzite–chert conglomerate collected from southeastern Yukon–Tanana terrane (YTT) — a composite thrust sheet resting structurally above North American parautochthonous strata and intervening imbricate sheets of the late Paleozoic oceanic Slide Mountain terrane — yielded, respectively, 89 and 74 concordant or nearly concordant (<20% discordant) U–Pb ages on single detrital zircons. They provide constraints on the provenance of this allochthonous pericratonic terrane. Zircons in the grit range from 1770 to 2854 Ma, with a well-defined Early Proterozoic peak between 1800 and 2100 Ma... [ABSTRACT FROM AUTHOR]
- Subjects :
- ZIRCON
ROCKS
GEOLOGICAL time scales
PALEONTOLOGY
MAGMATISM
Subjects
Details
- Language :
- English
- ISSN :
- 00084077
- Volume :
- 44
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Canadian Journal of Earth Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 26034860
- Full Text :
- https://doi.org/10.1139/E06-105