The microanalysis of iron and sulphur oxidation states in silicate glass - Understanding the effects of beam damage

Autor: Geoff Kilgour, Jon D Blundy, Stuart L. Kearns, Danilo Di Genova, Ery C. Hughes, Benjamin Buse, Heidy M Mader, Richard A. Brooker

Publikováno v: Hughes, E C, Buse, B, Kearns, S L, Brooker, R A, Di Genova, D, Kilgour, G, Mader, H M & Blundy, J D 2020, ' The microanalysis of iron and sulphur oxidation states in silicate glass-Understanding the effects of beam damage ', IOP Conference Series: Materials Science and Engineering, vol. 891, 012014 . < https://iopscience.iop.org/article/10.1088/1757-899X/891/1/012014 >
University of Bristol-PURE

Quantifying the oxidation state of multivalent elements in silicate melts (e.g., Fe2+ versus Fe3+ or S2- versus S6+) is fundamental for constraining oxygen fugacity. Oxygen fugacity is a key thermodynamic parameter in understanding melt chemical hist

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9615f1f4008cc3fde2ce33b1a50e4cd
https://resolver.caltech.edu/CaltechAUTHORS:20210226-081855287

Evaluating X-Ray Microanalysis Phase Maps Using Principal Component Analysis

Autor: Benjamin Buse, Stuart L. Kearns

Publikováno v: Buse, B & Kearns, S 2018, ' Evaluating X-Ray Microanalysis Phase Maps Using Principal Component Analysis ', Microscopy and Microanalysis, vol. 24, no. 2, pp. 116-125 . https://doi.org/10.1017/S1431927618000090

Automated phase maps are an important tool for characterizing samples but the data quality must be evaluated. Common options include the overlay of phases on backscattered electron (BSE) images and phase composition averages and standard deviations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b4c8a77aaa19483edb87e440fa2c45d
https://doi.org/10.1017/s1431927618000090

Electron Probe Micro-Analysis at Low Accelerating Voltages: The Impacts of Surface Coatings and Oxide Layers on Quantification

Autor: Mike B Matthews, Benjamin Buse, Stuart L. Kearns

Publikováno v: Microscopy and Microanalysis. 24:738-739

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::adb81b8d9de56beb713165816a8b647a
https://doi.org/10.1017/s143192761800418x

On the Welding of Pyroclasts from Very Low-Viscosity Magmas: Examples from Kimberlite Volcanoes

Autor: R. S. J. Sparks, Richard J. Brown, M Field, Benjamin Buse

Publikováno v: The Journal of Geology. 116:354-374

Lithofacies in kimberlite pipes in southern Africa exhibit features consistent with welded pyroclastic rocks. These include flared conduit-filling geometries, abundant lithic clasts, lithic clast layers, subhorizontal clast fabrics, gradational conta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95b667462a40bf437f4e326fcab0068b
https://doi.org/10.1086/588832

Nanoscale characterisation of crystal zoning

Autor: Jon D Blundy, Stuart L. Kearns, Benjamin Buse, Matt R. Kilburn, Kate E. A. Saunders

Publikováno v: Saunders, K, Buse, B, Kilburn, M, Kearns, S & Blundy, J 2014, ' Nanoscale characterisation of crystal zoning ', Chemical Geology, vol. 364, pp. 20-32 . https://doi.org/10.1016/j.chemgeo.2013.11.019
Chemical Geology

Advances in analytical techniques are fundamental to the enhanced understandings of many geological processes. Zoned volcanic crystals have been analysed by low (5) kV field emission gun electron probe micro-analyser (FEG-EPMA) and NanoSIMS to obtain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32addd5340c5214fc81de185239869e2
https://hdl.handle.net/20.500.11820/ad441101-cdcf-4a14-93b3-99d997099b4d