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Anna Ruefer

@annaruefer.bsky.social

72 followers 67 following 10 posts

PhD candidate at Stanford. Geology, volcanology, igneous petrology. I study magma and make puns. 🌋

Posts Replies Media

Anna Ruefer @annaruefer.bsky.social · 14/05/2026

Found the remnant of a satisfyingly cylindrical volcanic conduit off the coast of St Andrews, Scotland. You can see the basaltic columnar joints radiating out towards the cooling surface. You can also find some interesting phreatic deposits in this area. #KinkellNess

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Anna Ruefer @annaruefer.bsky.social · 03/05/2026

If you’re at #EGU26, come check out my talk on Wednesday at 15:10 where I’ll dive into supereruption magmatic plumbing and connectivity recorded by multiple phases.

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Anna Ruefer @annaruefer.bsky.social · 11/04/2026

Was such a treat to give a seminar at the USGS CalVO yesterday!

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Anna Ruefer @annaruefer.bsky.social · 18/12/2025

If giant supereruptions tapping rhyolites stored up to 1 GPa are more your cup of tea, come check out my second #AGU2025 talk tomorrow morning at 9:20am (352).

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Anna Ruefer @annaruefer.bsky.social · 16/12/2025

Come check out my AGU talk tomorrow at 4:15pm (350-351) on our rhyolite-MELTS modeling which illustrates highly efficient crystallization directly from basalt to rhyolite fueled recent volcanism at Córdon Caulle.

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Anna Ruefer @annaruefer.bsky.social · 17/07/2025

It’s a good day for exploring some wacky BSE zoning textures in feldspar.

A grayscale back scattered electron (BSE) image of a feldspar with a dark, patchy, resorbed core, from which a bright oscillatory zoned region has grown.

Multiple intergrown oscillatory zoned sanidine crystals emanating from a shared dark, resorbed plagioclase core.

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Anna Ruefer @annaruefer.bsky.social · 29/06/2025

Come check out my #IAVCEI2025 poster tomorrow afternoon (1.7.12; poster 25) to chat about complex supereruption plumbing systems and deep rhyolites!

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Anna Ruefer @annaruefer.bsky.social · 12/03/2025

New paper out! 🌋 We used rhyolite-MELTS in some unconventional ways on the spectacular Cordón Caulle system and learned that it is feasible that these rhyolites fractionated directly from a basaltic mush. Was such a fun project with great people.

sciencedirect.com

In one step: Insights into shallow differentiation from basalt to rhyolite at Cordón Caulle from rhyolite-MELTS simulations

Magma mush systems are commonly invoked as the source from which crystal-melt segregation produces rhyolites, but these systems are rarely observed. T…

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