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15 January 2016
Hunting blueschist (with bonus newt)
My first hike of the new year was to the Lexington Reservoir near Los Gatos. Fellow USGS postdoc Kayla Iacovino (@kalyai) came along to help search for blueschist-facies rocks in what’s locally known as Franciscan Complex melange. Now, I’m getting pretty good at spotting serpentinite – not that it isn’t fairly distinctive – but I’ve been hoping to see some blueschist as well. I found this USGS publication which shows a sample of blueschist from a spot “near” Lexington Reservoir in Santa Clara county, so that was where we headed.
Jessica Ball is a volcanologist at the U.S. Geological Survey, researching volcanic hydrothermal systems and stability, and doing science communication for the California Volcano Observatory. She previously worked at the Geological Society of America's Washington DC Policy Office, learning about the intersection of Earth science and legislative affairs. Her Mendenhall postdoc and PhD focused on how water affects the stability of volcanoes, and involved both field investigations and numerical modeling applications. Her blogging covers a range of topics, from her experiences in academic geosciences to science outreach and communication to her field and lab work in volcanology.