4 research outputs found
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Supplementary Data for: Microanalytical Constraints on the Geometry and Chemical Evolution of Kīlauea’s Volcanic Plumbing System
Supplementary Information accompanying the thesis "Microanalytical Constraints on the Geometry and Chemical Evolution of Kīlauea’s Volcanic Plumbing System". Information on methods can be found in Chapter 2 of this thesis, and the read me files in the folder for each chapter.
Electronic appendix 1 contains the EPMA profiles across olivine aggregates shown in Chapter 3. For further details, please see the publication https://doi.org/10.1130/G46660.1
Electronic Appendix 2 contains EPMA measurements of glasses and olivines presented in Chapter 4, along with the classification of olivine grains as deformed or undeformed.
The MATLAB code used for slip system identification is included (Slip_System_Id.m), along with an example .ctf file of an EBSD map of a deformed grain (Kil2_L3_386.ctf). For further details, please see the publication https://doi.org/10.1038/s41467-019-13635-y
Electronic Appendix 3 contains the compilation of forsterite contents from GEOROC and other sources presented in Chapter 5.
Electronic Appendix 4 contains the LAICPMS data presented in Chapters 5, along with information about the precision and accuracy of repeated analyses of standards.
For further details, please see the publication https://doi.org/10.1038/s41467-019-13518-2
Electronic Appendix 5 shows concentrations of chalcophile elements in melt inclusions and glasses (integrated with the lithophile data presented in chapter 5),
as well as sulfide compositions, and information about analyses of secondary standards. A zip file containing the Jupyter notebook used to model concentrations
of Ba and Cu during mantle melting as well as python requirements is also attached. However, it is suggested that readers access this through my github, where
I have provided a binder format allowing anyone to run the code without needing to install the relevant python packages.
https://github.com/PennyWieser/Sulfide_Present_Melting_GCA_Wieser2020. For further information, please see the publication. https://doi.org/10.1016/j.gca.2020.05.018
Electronic Appendix 6 contains the major and volatile element concentrations presented in Chapter 7. This work will soon be published in G3, where further details can be found
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Microanalytical Constraints on the Geometry and Chemical Evolution of Kīlauea’s Volcanic Plumbing System
Kīlauea Volcano is an outstanding natural laboratory in which to investigate basaltic volcanism, owing to over a century of extensive study. In the last decade, there has been a paradigm shift in our understanding of volcanic plumbing systems, moving away from a model where large vats of melt are stored in the crust, to a model dominated by extensive piles of settled crystals. This thesis examines the petrological evidence for this ‘mush-dominated’ model at Kīlauea Volcano, using a variety of state-of-the-art microanalytical techniques. Chapters 3 and 4 demonstrate the power of electron backscatter diffraction (EBSD) to investigate the processes leading to the formation of crystal aggregates and deformed crystals, which are observed in a wide variety of basaltic systems worldwide. Chapter 4 applies microstructural techniques developed through the study of experimentally- and naturally-deformed mantle peridotites to erupted volcanic crystals, demonstrating that mush piles have vertical extents of ∼200–700 m. Chapter 5 shows that relatively primitive Kīlauean olivines and their melt inclusions are out of major and trace element equilibrium with their carrier melts, with broad-reaching implications for the interpretation of melt inclusion records in mush-rich volcanic systems. Specifically, this work demonstrates that inclusions record processes happening over centuries to millennia, rather than those specific to an individual eruption (e.g., volatile fluxes, triggering mechanisms). Chapter 6 capitalizes on recent advances in LA-ICP-MS, permitting analyses of chalcophile elements within melt inclusions and matrix glasses. This dataset provides new constraints on the behaviour of these poorly-understood elements during mantle melting, crustal storage and fractionation, and low pressure degassing. Chapter 7 quantifies the CO2 budget of melt inclusions from the 2018 eruption using SIMS and Raman Spectroscopy. These paired analyses, combined with detailed evaluation of different CO2-H2O solubility models, yield storage depths which align remarkably well with reservoir depths inferred from geophysical inversions. Overall, this thesis demonstrates that the integration of different data streams obtained from state-of-the-art microanalysis has the potential to further our understanding of magmatic processes, even at extremely well-studied volcanic systems.NERC DTP studentship (NE/L002507/1)
Cambridge University Leave to Work away grant
NERC Ion-Microprobe Facilit
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Research Data Supporting: Reconstructing Magma Storage Depths for the 2018 KÄ«lauean Eruption from Melt inclusion CO2 Contents: The Importance of Vapor Bubbles
This dataset contains melt inclusion, host crystal, and matrix glass data, as well as bubble growth models
Progesterone receptor gene polymorphisms and risk of endometriosis: Results from an international collaborative effort
To investigate the association between self-reported endometriosis and the putative functional promoter +331C/T single nucleotide polymorphism (SNP) and the PROGINS allele