BackgroundMount Morning is a glaciated, undissected alkalic shield volcano in the Erebus volcanic province located SE of the south end of the Royal Society Range. An elongated 4.9 x 4.1 km wide caldera lies at the 2723-m-high summit, and numerous parasitic lava domes and flank cinder cones formed on fissures on the north, NE, and SE flanks. The latest volcanism associated with growth of the phonolitic central volcano was Potassium-Argon dated at about 1.2 to 1 million years, and late-Pleistocene to zero-age Argon/Argon dates were obtained for some of the volumetrically dominant basanitic fissure vents. More than 50 mophologically youthful flank vents occur on the flanks of Mount Morning.
Smithsonian / GVP volcano information
Mt. Morning Photos
Early morning at the shore of Lake Atitlán with Atitlán, Toliman and San Pedro volcanoes in the background (Photo: Tom Pfeiffer)
See also: Sentinel hub | Landsat 8