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The use of biotite trace element compositions for fingerprinting magma batches at Las Caņadas volcano, Tenerife
Citation
Sliwinski, JT and Ellis, BS and Davila-Harris, P and Wolff, JA and Olin, PH and Bachmann, O, The use of biotite trace element compositions for fingerprinting magma batches at Las Canadas volcano, Tenerife, Bulletin of Volcanology, 79, (1) Article 1. ISSN 0258-8900 (2017) [Refereed Article]
Copyright Statement
Copyright Springer-Verlag Berlin Heidelberg 2016
DOI: doi:10.1007/s00445-016-1088-2
Abstract
Accurate identification of individual volcanic events in the field is crucial for constraining eruption volumes and calculating recurrence intervals between eruptive episodes. Due to complexities of pyroclastic transport and deposition and intra-unit textural variability, such identification can be challenging. We present a novel method for fingerprinting ignimbrites via trace element chemistry (V, Co, Nb) in biotite by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Using samples from the alkaline magmatic series of Tenerife, we are able to demonstrate (1) clustering of previously characterized units into distinct, homogeneous groups based on V, Co, and Nb concentrations in biotite, despite the presence of extreme variation and zonation in other trace elements (Ba, Sr, Rb) that indicate complex petrogenetic processes, and (2) biotite compositions are similar throughout a deposit and relatively independent of stratigraphic height or juvenile clast texture (crystal-rich vs crystal-poor). Our results show that trace elements in biotite can be used to fingerprint eruptions and correlate geographically separated volcanic deposits, including those preserved in offshore turbidite records.
Item Details
Item Type: | Refereed Article |
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Keywords: | alkaline magmatism, biotite, stratigraphy, tenerife, trace element chemistry |
Research Division: | Earth Sciences |
Research Group: | Geology |
Research Field: | Volcanology |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the earth sciences |
UTAS Author: | Olin, PH (Dr Paul Olin) |
ID Code: | 126995 |
Year Published: | 2017 |
Web of Science® Times Cited: | 4 |
Deposited By: | CODES ARC |
Deposited On: | 2018-07-06 |
Last Modified: | 2018-08-24 |
Downloads: | 0 |
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