| Twelve-fold seismic data acquired by the Lamont-Doherty Earth Observatory in 1980 were reprocessed to provide better imaging of the subduction region of the offshore Taiwan accretionary prism. The lower slope domain of the prism is growing by Frontal accretion and underplating through duplex formation. The domain may be a relatively young feature since shortening, related to fluid expulsion and thrust faulting, is less than expected from plate convergence over the past 1 million years. Out-of-sequence thrusting, possibly in response to seamount subduction, causes significant uplift of the prism at the boundary between the domains of the lower and upper slope. Tectonic wedging at the rear of the prism results in uplift and shortening within North Luzon Trough strata. Finally, strike-slip faulting is identified along the North Luzon Ridge, presumably related to the lateral component of oblique convergence between Eurasian and Philippine Sea plates. |
