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16 January 2011
Flow banding and rheomorphic deformation
In my first quick Google search about flow banding, I came up with Cole Kingsbury’s fairly new blog, Chaotically Flow-Banded. He gives a good basic description of what flow banding is: visually distinguishable “bands” or layers in volcanic rock that differ based on composition, texture, or geochemical characteristics. Cole focuses on flow banding in lava, which is a familiar feature to him because of his work on the Obsidian Dome near Long Valley in California. I’m also working on domes now (although slightly less felsic ones), but my first experience with flow banding came from mapping Miocene ash flow tuffs in Utah.
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.