lahar deposits. The remainder of what is seen here is a fairly light rock, overall, but with many much darker small pebbles. Internally, it's very poorly sorted, but within a narrowly restricted size range, from sand to pebbles in grain size. What this rock represents should have been much more obvious to me than it was, but here's the thing: I'd never seen anything quite like it, and I couldn't get my mind around those darker, more mafic, bits. It looked like a tuff- a solidified ash deposit- but what the heck was going on with the completely different rock types?
Photo unmodified. October 9, 2012. FlashEarth Location.
Is This Your Hat?
2 years ago