| Abstract: | Differential motion across the central Cascadia subduction boundary in Washington results in a complex pattern of folds and faults within the shelf and onshore parts of the accretionary margin. Faults and folds above a coastal, north-northwest-trending thrust system provide evidence of ongoing subduction-related contraction. South of this coastal thrust system many fold axes and thrust faults trend east-northeast, in the direction of convergence. These structures are not consistent with a simple subduction system undergoing northeastward convergence. This deformation, adjacent to the boundary between the subduction complex and the Siletz terrane, may be driven by relative convergence between the northward-translating Siletz terrane and the subduction complex. The regional pattern of modern uplift rates is consistent with ongoing north-south contraction across this boundary and the north-south compressional stress field in the area. |
| Genre: | Article |
| ProdID: | 70018139 |
| Citation Author: | McCrory, P. A. |
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| Citation End Page: | 932 |
| Citation Issue: | 10 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geology |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | Tectonic model explaining divergent contraction directions along the Cascadia subduction margin, Washington; 1996; Article; Journal; Geology; McCrory, P. A. |
| Citation Start Page: | 929 |
| Citation Volume: | 24 |
| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | Tectonic model explaining divergent contraction directions along the Cascadia subduction margin, Washington; 1996; Article; Journal; Geology; McCrory, P. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1996 00:00 -0600 |
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