Geo 730: March 3, Day 427: Platy Jointing II

A closer view of the same shot as yesterday. While the platy flows seem to dominate here, there are other flows as well. To the right and below the hammer, there's a rubbly, red, scoria-like flow; a similar one is visible in the upper left of yesterday's photo. These may actually be a part of the same flow as the platy material, representing the basal and surficial breccias, equivalent to aa-aa. I'm not at all certain about that, as the rubbly lava is much more vesicular than the platy lava, and the contact between the units is much sharper than I'd expect if they were different aspects of the same flow.

Photo unmodified. August 19, 2011. FlashEarth Location.