Oakland Geology

This is a block of Swainland Road, at the high end of the Glen Highlands neighborhood hard under the powerline ridge just south of Route 24. The bedrock is mapped as Great Valley Sequence sandstone. It’s a lot harder and stronger than much of the rock in the hills, but it still doesn’t like being exposed and oversteepened. It’s steadily encroaching on the sidewalk, trying to reach a more comfortable angle. Vegetation would probably help.

This entry was posted on 27 November 2012 at 7:23 pm and is filed under Oakland rock types. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.