Country: | France | ||
Subregion Name: | Southwestern Pacific Ocean | ||
Volcano Number: | 0404-05- | ||
Volcano Type: | Shield volcanoes | ||
Volcano Status: | Holocene | ||
Last Known Eruption: | Unknown | ||
Summit Elevation: | 143 m | 469 feet | |
Latitude: | 13.30°S | 13°18'0"S | |
Longitude: | 176.17°W | 176°10'0"W | |
The Wallis Islands consist of one relatively large island, 7 x 14 km Uvea Island, and 22 smaller islands and islets that are surrounded by a barrier reef. The low, forested islands, formed of flat-lying basaltic lava flows that are cut by explosion craters and capped by tuff cones and cinder cones, reach a maximum height of only 143 m above sea level. Numerous small shields (lava cones) and tuff cones are considered on morphological grounds to be of Pleistocene to Recent age (Stearns, 1945). Potassium-Argon ages of dated samples range from 0.5 to 0.08 million years old, but rocks of Pleistocene or Holocene age are present (Price et al., 1991). |