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Geochemical behavior of major and trace elements during magma evolution process in Bodie Hills Volcanic Field, Nevada
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 15th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects, May 2016, Volume 2016, p.1 - 5
Abstract
The key issue of volcanoes investigations at convergent plate boundaries, associated with island arcs and active continental margins, is reconstruction of the whole process of magma evolution: from the generation of magma to the eruption on the Earth’s surface. Recently, significant efforts are made to solve this problem by application of petrologic and geochemical methods. However, many questions remain undiscussed. The depth of melt generation, differentiation conditions and probability of ore generation make up key issues common to real magmatic complexes. These issues also exist for Bodie Hills Volcanic Field (BHVF), Nevada – California, USA. The research focuses on reconstruction of all the way of magma evolution from the moment of it inception till eruption on the surface for four volcanic centers - Mount Bidman, Aurora, Masonic and West Brawley peak in BHVF. Whole-rock chemical analyses performed in analytical laboratories of SGS Minerals, Toronto, Canada are used. During the research, principal mechanism of magma evolution is determined and fraction of liquid in melt for every stage of melt separation is calculated.