Dissertation
Magma dynamics of the phonolitic Diego Hernandez Formation, Tenerife, Canary Islands
Washington State University
Doctor of Philosophy (PhD), Washington State University
12/2007
DOI:
https://doi.org/10.7273/000005727
Abstract
The Diego Hernandez Formation (DHF; 600-196 ka) represents the products of
the most recent complete cycle of phonolitic explosive volcanism on Tenerife (Canary
Islands, Spain). Two distinct phonolite lineages have persisted, or have been regenerated,
throughout the history of the DHF. During any one eruption a single phonolite type
dominates, but detailed geochemical investigations show that both magmas did exist
simultaneously, for example, in the Fasnia Member.
In this dissertation, Chapter 1 describes laser ablation ICP-MS methods developed
to analyze in situ trace element contents in pumices and minerals from DHF deposits,
data from which are presented in other chapters. Chapter 2 is summary of DHF
stratigraphy, geochronology, and physical volcanological interpretation of the DHF that
provides context for the geochemistry to follow. Chapter 3 is a detailed study of the
geochemistry of the Fasnia Member in which the chemical heterogeneity of whole rocks
and glasses are described. Chapters 4 and 5 describe the different clinopyroxene and
titanite compositions, respectively, found in the Fasnia and their importance in
understanding Fasnia magmatism. Chapter 6 describes geochemical relationships
between the DHF chemostratigraphic units and provides an interpretation of magmatic
events throughout DHF time relative to the geochemistry.
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Details
- Title
- Magma dynamics of the phonolitic Diego Hernandez Formation, Tenerife, Canary Islands
- Creators
- Paul Hessel Olin
- Contributors
- John Wolff (Chair) - Washington State University, School of the Environment (CAS)
- Awarding Institution
- Washington State University
- Academic Unit
- School of the Environment (CAHNRS)
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 430
- Identifiers
- 99901054941201842
- Language
- English
- Resource Type
- Dissertation