Nanoscale characterisation of crystal zoning

Kate E Saunders, Benjamin Buse, Matt R Kilburn, Stuart L Kearns, Jon D Blundy

Research output: Contribution to journalArticle (Academic Journal)peer-review

26 Citations (Scopus)

Abstract

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 sub-micrometre chemical profiles and compared to time-of-flight SIMS (TOF-SIMS) and high (15-20) kV EPMA profiles. Plagioclase and orthopyroxene crystals have been analysed by FEG-EPMA, at accelerating voltages of 5 kV providing a spatial resolution (step size) of

Original languageEnglish
Pages (from-to)20-32
Number of pages13
JournalChemical Geology
Volume364
DOIs
Publication statusPublished - 22 Jan 2014

Keywords

  • FEG-EPMA
  • NanoSIMS
  • Crystal zoning
  • Diffusion chronometry
  • MOUNT ST-HELENS
  • PLAGIOCLASE FELDSPAR
  • VAPOR TRANSFER
  • MAGMA ASCENT
  • TIME SCALES
  • NEW-ZEALAND
  • DIFFUSION
  • SYSTEM
  • PHENOCRYSTS
  • ERUPTION

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