Origin of macrocrysts and gabbro-nodules in Hengill, SW Iceland

• Main Author: Ásgeir Einarsson 1983-
• Other Authors: Háskóli Íslands
• Format: Thesis
• Language: English
• Published: 2012
• Subjects: Jarðfræði; Hengilssvæðið; Jarðsaga; Steindafræði; Bergfræði; Hengill; Reykjanes; Iceland
• Online Access: http://hdl.handle.net/1946/13896

A number of lava flows in Iceland contain large plagioclase phenocrysts and some contain abundant olivines (picrites). The origin of these macrocrysts and their relationship to their host magmas are of fundamental petrologic importance. Two separate pillow/hyaloclastite formations, Maelifell and Mid...