Figure F1. Locations of the ODP Sites 1149 and 801 and other ODP drilling sites relative to the west Pacific arcs (from north to south: Honshu, Izu, and Marianas arcs). The predicted topography of the northwest Pacific is taken from Smith and Sandwell (1997) and magnetic lineations of the western Pacific are compiled from Nakanishi et al. (1989) and the PLATES Project (1998). Ages of selected lineations (solid black lines) are given using the timescale of Channell et al. (1995). Open circles = locations of selected DSDP/ODP sites. Site 1149 is located 2200 km northwest of Site 801 along a fracture zone bounded flow line spanning ~36 m.y. White dashed lines = locations of fracture zones (GMT software; Smith and Wessel, 1990). The section shown on the side of the figure represents a simplified stratigraphic section of ODP Site 801. MORB = mid-ocean-ridge basalt.

Figure F1. Locations of the ODP Sites 1149 and 801 and other ODP drilling sites relative to the west Pacific arcs (from north to south: Honshu, Izu, and Marianas arcs). The predicted topography of the northwest Pacific is taken from Smith and Sandwell (1997) and magnetic lineations of the western Pacific are compiled from Nakanishi et al. (1989) and the PLATES Project (1998). Ages of selected lineations (solid black lines) are given using the timescale of Channell et al. (1995). Open circles = locations of selected DSDP/ODP sites. Site 1149 is located 2200 km northwest of Site 801 along a fracture zone bounded flow line spanning ~36 m.y. White dashed lines = locations of fracture zones (GMT software; Smith and Wessel, 1990). The section shown on the side of the figure represents a simplified stratigraphic section of ODP Site 801. MORB = mid-ocean-ridge basalt.