2010
DOI: 10.1029/2010gc003248
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Effects of open and closed system oxidation on texture and magnetic response of remelted basaltic glass

Abstract: [1] As part of an experimental and observational study of the magnetic response of submarine basaltic glass (SBG), we have examined, using ion backscattering spectrometry (RBS), transmission and scanning electron microscopy, energy dispersive X-ray spectrometry, and surface X-ray diffraction, the textures wrought by the controlled, open and closed system oxidation of glasses prepared by the controlled environment remelting and quenching of natural SBG. Initial compositions with ∼9 wt % FeO* were melted at 1430… Show more

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Cited by 5 publications
(11 citation statements)
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“…In quickly cooled samples, no oxides are visible and a continuous spherulitic zone is absent, although small, discontinuous spherulitic areas are associated with the ends of the plagioclase crystals (Figure 2b). At a ∼30 nm scale, glass generated in a companion experiment [ Burgess et al , 2010] is completely uniform away from the crucible walls. However, in high‐magnification TEM amorphous immiscibility and (very sparse) nanocrystals are present [ Burgess et al , 2010, Figure 2].…”
Section: Resultsmentioning
confidence: 99%
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“…In quickly cooled samples, no oxides are visible and a continuous spherulitic zone is absent, although small, discontinuous spherulitic areas are associated with the ends of the plagioclase crystals (Figure 2b). At a ∼30 nm scale, glass generated in a companion experiment [ Burgess et al , 2010] is completely uniform away from the crucible walls. However, in high‐magnification TEM amorphous immiscibility and (very sparse) nanocrystals are present [ Burgess et al , 2010, Figure 2].…”
Section: Resultsmentioning
confidence: 99%
“…At a ∼30 nm scale, glass generated in a companion experiment [ Burgess et al , 2010] is completely uniform away from the crucible walls. However, in high‐magnification TEM amorphous immiscibility and (very sparse) nanocrystals are present [ Burgess et al , 2010, Figure 2]. Diffraction patterns are not indexable, but indicate a cubic phase.…”
Section: Resultsmentioning
confidence: 99%
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“…Both M‐type and T‐type samples contain devitrification textures within the glass, with the amount of glass devitrification increasing with anneal time (Figure ). We speculate that stable‐single‐domain (SSD) iron oxides below the resolution of the electron microprobe are forming during devitrification, leading to more PSD‐like hysteresis loops, enhanced TRM acquisition, and harder AF demagnetization spectra in our annealed samples, which has also been observed in natural and synthetic basaltic glasses [ Burgess et al ., ; Bowles et al ., ]. The high amount of glass in these samples is a function of quenching the pre‐anneal starting materials.…”
Section: Discussionmentioning
confidence: 99%