[Geolalumni] Invited Speaker Seminar: Dr. Hannah Shamloo, 1/28, ES 100

[Geology Department]

Hi everyone,



Please join us for the Invited Speaker Seminar on Tuesday, January 28, at 4pm with Dr. Hannah Shamloo (Central Washington University)!



Location: ES 100

Topic: Timing is everything: Pre-eruptive magmatic processes and timescales for Mount Baker volcanism, Cascades USA



Abtract: Volcanic eruptions are some of the Earth's most devastating hazards. Specifically, the timing between volcanic unrest and an eruption is difficult to forecast, requiring a thorough understanding of the magmatic plumbing system beneath a volcano. A magma's crystal cargo directly records the thermophysical storage conditions of the magma prior to eruption. Specifically, chemical zoning that forms during crystal growth with changing magmatic conditions can record a magma's history, akin to rings of a tree. In the last two decades, improvements in experimental petrology and analytical instruments have led to the technique of diffusion chronometry becoming widespread. In this talk, I will demonstrate the power of combining classic petrologic methods (mineral geochemistry, thermobarometry, textural analysis) with diffusion chronometry for the reconstruction of the pre-eruptive histories of magmas. Specifically, Kulshan (Mount Baker) in Washington state is an active and very-high-threat volcano of the Cascades Arc. Prior work on Kulshan reveals the same mineral populations are successively erupted through time indicating a long-lived and well-established "magma factory". This study provides the first calculated timescales for Kulshan that quantify the longevity of eruptible magmas as well as how long it takes for a magma to ascend through the crust and erupt. Both timescales are critical for hazard assessment for active volcanoes when they begin to show signals of unrest.

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Thank you,
Hye In

Hye In Park | She/Her
Geology Undergraduate Program Coordinator
Western Washington University
516 High Street, Bellingham WA 98225 | ES 240
parkh23 at wwu.edu<mailto:parkh23 at wwu.edu> | 360-650-6516<tel:360-650-6516> | Message me on Teams<https://teams.microsoft.com/l/chat/0/0?users=parkh23@wwu.edu>
Schedule an advising appointment with me<https://calendly.com/parkh23/geology>

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