Maquinna is one of the few mud volcanoes documented in the northeast Pacific. It is across, contains a breached
caldera and two small summit
craters. Scientific studies of Maquinna showed strong, co-registered thermal, particulate, and unusual
oxygen that extends above the volcano, indicating a water column. This data suggests the volcano is actively venting warm hydrothermal fluids. The formation of Maquinna is thought to be high sediment accumulation and horizontal tectonic compression associated with
accretionary prism formation adjacent to the west coast of Vancouver Island supporting overpressuring of fluids at depth along the Nootka Fault zone, resulting in the formation of Maquinna. ==See also==