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The NE Pacific Ocean is considered the birthplace of many fundamental ideas for modern plate tectonics theory. In this book the orogenic belts of this region are discussed in a single, internally consistent tectonic concept. Geological information is considered the most reliable. Geophysical models are tested for compatibility with observable geological data. The new concept avoids force-fitting interpretations to preconceived assumptions regarding accreted far-traveled terranes in the Cordillera and continental-oceanic plate interactions in the entire region.
Table des matières
Outstanding issues in studies of continental margins.- Evaluation of the data base.- Pre-cenozoic geologic framework of western Cordillera.- Tertiary stratigraphic framework of coastal provinces in Washington and British Columbia.- Significance of the trans-cordilleran olympic-wallowa zone in geologic evolution of the Washington and British Columbia coastal regions.- Continental marging off Southeastern Alaska, the Queen Charlotte Islands, and Northern Vancouver Island.- Crustal blocks under Vancouver Island and the exterior shelf.- Structure of continental slope off Vancouver Island.- Interlocking of continental and oceanic crustal blocks along the continental margin and non-rigid behavior of Northern Juan de Fuca Plate.- Concluding remarks.
Résumé
The NE Pacific Ocean is considered the birthplace of many fundamental ideas for modern plate tectonics theory. In this book the orogenic belts of this region are discussed in a single, internally consistent tectonic concept. Geological information is considered the most reliable. Geophysical models are tested for compatibility with observable geological data. The new concept avoids force-fitting interpretations to preconceived assumptions regarding accreted far-traveled terranes in the Cordillera and continental-oceanic plate interactions in the entire region.
