Baltica in the Cordillera?

E. L. Miller, N. Kuznetsov, A. Soboleva, O. Udoratina, M. J. Grove, George E Gehrels

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

U-Pb ages of detrital zircon suites from Paleozoic strata in the Arctic Alaska-Chukotka terrane (AAC), Alexander terrane, northern Sierra terrane, and eastern Klamath terrane of the North American Cordillera suggest an exotic Gondwana or Baltic origin. We evaluate these hypotheses with U-Pb ages of detrital zircon suites from Cambrian-Devonian strata of northern Baltica. Precambrian zircon populations (ca. 0.8-3.0 Ga) from Baltica compare well with similar age detritus in the AAC and Cordilleran terranes, but the amount and age of younger Neoproterozoic and Ordovician-Silurian components are variable. The AAC shares its stratigraphy with Baltica and has the most similar detrital zircon suites. Closing the Arctic places the AAC against the Lomonosov Ridge and the edge of Baltica in pre-Cretaceous time. After the Caledonian orogeny and before the Ural Mountains formed, the Baltica, AAC, and Cordilleran margins shared a Devonian-Carboniferous rift history and became along-strike portions of a Carboniferous-Permian continental margin. This rifting event might have been responsible for the initial separation of Baltica and Caledonian affinity terranes from this margin.

Original languageEnglish (US)
Pages (from-to)791-794
Number of pages4
JournalGeology
Volume39
Issue number8
DOIs
StatePublished - Aug 2011

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Baltica
cordillera
terrane
zircon
Caledonian orogeny
Gondwana
Silurian
detritus
rifting
continental margin
Ordovician
Precambrian
Permian
stratigraphy
Paleozoic
Cretaceous
mountain

ASJC Scopus subject areas

  • Geology

Cite this

Miller, E. L., Kuznetsov, N., Soboleva, A., Udoratina, O., Grove, M. J., & Gehrels, G. E. (2011). Baltica in the Cordillera? Geology, 39(8), 791-794. https://doi.org/10.1130/G31910.1

Baltica in the Cordillera? / Miller, E. L.; Kuznetsov, N.; Soboleva, A.; Udoratina, O.; Grove, M. J.; Gehrels, George E.

In: Geology, Vol. 39, No. 8, 08.2011, p. 791-794.

Research output: Contribution to journalArticle

Miller, EL, Kuznetsov, N, Soboleva, A, Udoratina, O, Grove, MJ & Gehrels, GE 2011, 'Baltica in the Cordillera?', Geology, vol. 39, no. 8, pp. 791-794. https://doi.org/10.1130/G31910.1
Miller EL, Kuznetsov N, Soboleva A, Udoratina O, Grove MJ, Gehrels GE. Baltica in the Cordillera? Geology. 2011 Aug;39(8):791-794. https://doi.org/10.1130/G31910.1
Miller, E. L. ; Kuznetsov, N. ; Soboleva, A. ; Udoratina, O. ; Grove, M. J. ; Gehrels, George E. / Baltica in the Cordillera?. In: Geology. 2011 ; Vol. 39, No. 8. pp. 791-794.
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