Attention Geologists! Looped Striations in San Pedro, CA?
Does anyone know what this rock pattern is called? We don't think of rocks as bendable, but here it is and the only geology I know is from grade school. I have a theory about it influenced by Devils Postpile up in Mammoth, CA. Imagine lava, or molten magma is pushed up from the surface while still molten hot. If pushed high enough it could get top heavy and fall over onto itself forming a loop. But in that case the rock would be igneous rock. What's interesting about my pictures is the rock appears to be a flaky kind of sedimentary rock. How does that bend? It should just crumble, no? One of the informative signs in the park (White Point / Royal Palms in San Pedro, CA) refers to it as altamira shale for what it's worth. How many people pass by this without even noticing? The only reason I noticed it is because some buddies and I traveled through Death Valley in a Jeep 4x4 back in college. One buddy was a geologist and stopped the car to take a picture of just such a formation. That was years ago. If I hadn't taken that pic for my buddy I would probably not have noticed this feature in San Pedro myself!!