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Titolo:
DEFORMATION OF THE NORTHERN CIRCUM-PACIFIC MARGIN - VARIATIONS IN TECTONIC STYLE AND PLATE-TECTONIC IMPLICATIONS
Autore:
RUBIN CM; MILLER EL; TORO J;
Indirizzi:
CENT WASHINGTON UNIV,DEPT GEOL ELLENSBURG WA 98926 STANFORD UNIV,DEPT GEOL STANFORD CA 94305
Titolo Testata:
Geology
fascicolo: 10, volume: 23, anno: 1995,
pagine: 897 - 900
SICI:
0091-7613(1995)23:10<897:DOTNCM>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
COAST PLUTONIC COMPLEX; YUKON-TANANA TERRANE; EAST-CENTRAL ALASKA; BRITISH-COLUMBIA; SOUTHEASTERN ALASKA; KOYUKUK TERRANE; CRUST BENEATH; WASHINGTON; EVOLUTION; ISLAND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
42
Recensione:
Indirizzi per estratti:
Citazione:
C.M. Rubin et al., "DEFORMATION OF THE NORTHERN CIRCUM-PACIFIC MARGIN - VARIATIONS IN TECTONIC STYLE AND PLATE-TECTONIC IMPLICATIONS", Geology, 23(10), 1995, pp. 897-900

Abstract

During mid- to Late Cretaceous time, the northern paleo-Pacific Oceanwas characterized by subduction for >6000 km along strike. The associated magmatic and orogenic belt now comprises parts of the U.S. and Canadian Cordillera, Alaska, and the Russian Far East. Crustal shortening in the northwestern Cordillera sector of the belt was contemporaneous with extension in northern and interior Alaska and the Bering Straitregion, while extensional to neutral tectonics prevailed in the Sea of Okhotsk region, Russian Far East. The along-strike continuity of magmatism during the similar to 120-80 Ma time interval resulted from subduction beneath the northern circum-Pacific margin, even beneath the broadest parts of the belt in the Alaska and Bering Strait region, which we suggest were modified by large-magnitude crustal extension, Variations in deformational style along strike of the orogenic belt may be related to changes in the nature of the mechanical coupling between the subducting oceanic and overriding continental plates, where the central extensional part of the belt developed above a part of the slab characterized by southward retreat or rollback of the subduction zone.

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Documento generato il 08/07/20 alle ore 07:03:27