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| Titel |
Detrital zircon geochronologic tests of the SE Siberia-SW Laurentia paleocontinental connection |
| VerfasserIn |
J. S. MacLean, J. W. Sears, K. R. Chamberlain, A. K. Khudoley, A. V. Prokopiev, A. P. Kropachev, G. G. Serkina |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1868-4556
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| Digitales Dokument |
URL |
| Erschienen |
In: Geology, geophysics and tectonics of Northeastern Russia: a tribute to Leonid Parfenov ; Nr. 4 (2009-09-17), S.111-116 |
| Datensatznummer |
250001443
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| Publikation (Nr.) |
 copernicus.org/smsps-4-111-2009.pdf |
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| Zusammenfassung |
| Strikingly similar Late Mesoproterozoic stratigraphic sequences and
correlative U-Pb detrital-zircon ages may indicate that the Sette Daban
region of southeastern Siberia and the Death Valley region of southwestern
North America were formerly contiguous parts of a Grenville foreland basin.
The Siberian section contains large numbers of detrital zircons that
correlate with Grenville, Granite-Rhyolite, and Yavapai basement provinces of
North America. The sections in both Siberia and Death Valley exhibit
west-directed thrust faults that may represent remnants of a Grenville
foreland thrust belt. North American detrital-zircon components do not occur
in Siberian samples above a ~600 Ma breakup unconformity, suggesting
that rifting and continental separation blocked transfer of clastic sediment
between the cratons by 600 Ma. Faunal similarities suggest, however, that
the two cratons remained within the breeding ranges of Early Cambrian
trilobites and archeocyathans. |
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