NEHRP Clearinghouse
- Title
- Crustal Structure of the Cascadia Fore Arc of Washington.
- File
- PB2006112039.pdf
- Author(s)
- Parsons, T.; Blakely, R. J.; Brocher, T. M.; Christensen, N. I.; Fisher, M. A.
- Source
- January 2006, 50 p.
- Identifying Number(s)
- USGS/PP-1661-D
- Abstract
- Crustal structure models derived from previous work are here presented at three different scales: (1) a two-dimensional cross-section model through the subduction zone in southern Washington, (2) a three-dimensional seismic tomographic analysis of controlled-source and earthquake traveltime data aimed at resolving the large-scale geometry of the thick Eocene mafic basement of the Washington fore arc and its relationship to the accretionary prism and volcanic arc, and (3) a three-dimensional image of the upper crust of the Puget Lowland based on seismic and gravity data.
- Keywords
- ; Seismic data; Crustal structure models; Mathematical models; Schematic diagrams; Pacific Northwest; Subduction zone; Cascadia subduction margin; Gravity data; Maps; Fore arc