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Relative motions between Eurasia and North America in the Bering Sea region

Harbert, W and Frei, LS and Cox, A and Engebretson, DC (1987) Relative motions between Eurasia and North America in the Bering Sea region. Tectonophysics, 134 (4). 239 - 261. ISSN 0040-1951

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Abstract

Knowledge of the relative motion of the North American and Eurasian plates during the late Mesozoic and Cenozoic provides insight into the observed timing and style of deformational events in the Bering Sea region. Periods of strong convergence from ≈ 70 to ≈ 50 Ma (Maastrichtian to Paleocene) are correlated with compressional deformation between the Chukotsk Peninsula and northern Alaska and movement along the Denali fault. The convergence may also be the cause of a previously proposed counterclockwise rotation of western Alaska. Transform motion between these plates from 50 to 38 Ma (Middle to Late Eocene) correlates with subsidence of the Bering Shelf, creation of a series of pull-apart basins along the Bering margin and cessation of calc-alkaline volcanism in western Alaska. Slight compressive convergence from 37 Ma to the present may be responsible for the anticlinal deformation of basin filling sediments in the Anadyr and Khatyrka basins. © 1987.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Harbert, Wharbert@pitt.eduHARBERT
Frei, LS
Cox, A
Engebretson, DC
Date: 15 March 1987
Date Type: Publication
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Journal or Publication Title: Tectonophysics
Volume: 134
Number: 4
Page Range: 239 - 261
DOI or Unique Handle: 10.1016/0040-1951(87)90340-4
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Geology and Planetary Science
Refereed: Yes
ISSN: 0040-1951
Date Deposited: 26 Aug 2012 14:39
Last Modified: 02 Feb 2019 15:57
URI: http://d-scholarship.pitt.edu/id/eprint/13589

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