Click on image for larger version.
Pioneer Seamount is 11.0±0.1 million years old (Davis et al., in press) and is nearly equidimensional with width and length of about 12.8 kilometers. It rises about 1930 meters above the surrounding seafloor to a minimum water depth of 820 meters. It has a volume of about 135 km3. Samples recovered from Pioneer are alkalic basalt, hawaiite, and mugearite. Like samples from Davidson Seamount, all samples are highly vesicular.
|Index Map||Axial Volcano||Gorda Ridge||Cleft Segment||Taney Seamounts|
|Guide, Gumdrop, Pioneer Seamounts||Mendocino Fracture Zone||President Jackson Seamount||Davidson Seamount||Vance Seamounts|