argillite were probably once all one larger boulder. Through processes both natural (weathering and frost wedging, for example) and human, they've been split into a number of smaller slabs. This is somewhat metamorphosed, I think; it's more indurated than shale by a long shot, but the foliation and cleavage is not as well developed as I would expect in slate.
In the mid-distance on the left, you can see the wine grapes foreshadowed in Wednesday's post.
Photo unmodified. July 10, 2012. FlashEarth location.
Is This Your Hat?
2 years ago