Converging Plates

Mount Rainier National Park is a place I often visit. It has spectacular views aside from the volcano which it is named after. This area has been created by converging plates; the Cascadian subduction zone. This is oceanic crust meeting continental crust. The mountains, which looked like giant rocks coming out of the mountain range, didn’t show noticeable folds, other than slightly compressed horizontal lines. Apparently, these are rhyolite towers. They're deposited from magma that is very high in silica. The fault type is considered a mega thrust fault. Although beautiful, the geology here in Washington State is somewhat complicated. Where I expect to find something we are studying, something new seems to come up into place.