Global Volcanism Program | Image GVP-11155
Flat-topped Curtis Island, seen here from the N, is, along with nearby Cheeseman Island, the uplifted portion of a submarine volcano astride the Kermadec Ridge. The small Pleistocene island contains abundant andesitic pyroclastic flow deposits. Reports of possible historical eruptions probably represent increased thermal activity from a shallow crater near sea level. Geologic studies have documented uplift of 18 m at Curtis during the past 200 years.
Photo by Owen Calder, 2004
Keywords: submarine volcano