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GEOREF RECORD

Tectonic evolution of the San Juan Islands thrust system, Washington

E. H. Brown, B. A. Housen and E. R. Schermer
Tectonic evolution of the San Juan Islands thrust system, Washington (in Floods, faults, and fire; geological field trips in Washington State and southwest British Columbia, Pete Stelling (editor) and David S. Tucker (editor))
Field Guide (Geological Society of America) (2007) 9: 143-177

Abstract

The mid-Cretaceous San Juan Islands-northwest Cascades thrust system is made up of six or more nappes that are a few kilometers or less thick, up to one hundred kilometers in breadth, and that were derived from previously accreted Paleozoic and Mesozoic terranes. This field trip addresses many questions regarding the tectonic evolution of this structural complex, including the homeland of the terranes and the process of post-accretionary dispersal that brought them together, how thrusting in the San Juan Islands might have been related to coeval orogenic activity in the neighboring Coast Plutonic Complex, and the origin of blueschist metamorphism in the thrust system relative to subduction and nappe emplacement. The geology of this trip has many counterparts in other outboard regions of the Cordillera, but some aspects of the tectonic processes, as we understand them to date, seem to be unique.


ISSN: 2333-0937
EISSN: 2333-0945
Serial Title: Field Guide (Geological Society of America)
Serial Volume: 9
Title: Tectonic evolution of the San Juan Islands thrust system, Washington
Title: Floods, faults, and fire; geological field trips in Washington State and southwest British Columbia
Author(s): Brown, E. H.Housen, B. A.Schermer, E. R.
Author(s): Stelling, Peteeditor
Author(s): Tucker, David S.editor
Affiliation: Western Washington University, Department of Geology, Bellingham, WA, United States
Affiliation: Western Washington University, Geology Department, Bellingham, WA, United States
Pages: 143-177
Published: 2007
Text Language: English
Publisher: Geological Society of America, Boulder, CO, United States
ISBN: 978-08130009-0
References: 90
Accession Number: 2007-113869
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch map, sect., 1 table, strat. col.
N48°45'00" - N48°52'00", W121°49'60" - W121°40'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 200722
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