Bill Minarik<p>The Bandelier Tuff (New Mexico) ejected perhaps 800 cubic km of magma and rock in two events a little over 1 million years ago.</p><p>Trace elements in <a href="https://fosstodon.org/tags/quartz" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>quartz</span></a> make it glow in an electron beam (cathode luminescence). The outer bright blue rims in CL record crystallization temperatures (from Ti concentrations) abruptly 100°C hotter than before: magma recharge triggering a <a href="https://fosstodon.org/tags/supereruption" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>supereruption</span></a>.</p><p>Jack Wilcock's M.Sc. work (John Stix's group).<br><a href="https://fosstodon.org/tags/MinCup23" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MinCup23</span></a> <a href="https://fosstodon.org/tags/Caldera" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Caldera</span></a> <a href="https://fosstodon.org/tags/Volcano" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Volcano</span></a> <a href="https://fosstodon.org/tags/NewMexico" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NewMexico</span></a> <a href="https://fosstodon.org/tags/LAICPMS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LAICPMS</span></a> <a href="https://fosstodon.org/tags/CL" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CL</span></a></p>