Reliability of quartz-hosted melt inclusions and discrete rhyolite reservoirs revealed by H isotopes, trace elements, and volatiles
Sarah M. Hickernell, Ayla S. Pamukçu, Brian D. Monteleone
TL;DR
This study confirms that quartz-hosted melt inclusions can reliably reveal preeruptive magma conditions when carefully analyzed using hydrogen isotopes and other measurements.
Contribution
The study introduces a method to identify and retain preeruptive signatures in melt inclusions by combining H isotopes, trace elements, and geometry analysis.
Findings
Quartz-hosted melt inclusions can retain preeruptive signatures if carefully selected and analyzed.
Hydrogen isotope measurements help identify postentrapment modifications in melt inclusions.
Multiple discrete rhyolite magma reservoirs were identified in the Highland Range volcanic sequence.
Abstract
High-silica magmas (≥68 weight % silicon dioxide) have produced some of the largest and most impactful volcanic eruptions in Earth’s history. Quartz-hosted melt inclusions can provide critical insights into the architecture, evolution, and eruption of silicic magmas; however, the reliability of mineral-hosted melt inclusion compositions has been questioned because of potential postentrapment modification of inclusions via diffusive exchange. We demonstrate that with careful sample selection, both naturally glassy and experimentally homogenized quartz-hosted melt inclusions can retain meaningful preeruptive signatures and provide useful insights into preeruptive magmatic conditions. We also show that hydrogen isotope measurements and detailed descriptions of melt inclusion geometries are particularly critical for identifying postentrapment diffusive exchange in melt inclusions, whether…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsGeological and Geochemical Analysis · Mineralogy and Gemology Studies · Planetary Science and Exploration