Claremont Chert

July Happenings 2024

The East Bay Wildfire Coalition will have its second meeting on Monday, July 8th at 9a.m. The meeting will be held at El Cerrito City Hall but you are invited to participate on Zoom (Check this post for the zoom link). It’s also summer and we are starting to see thimbleberries on thimbleberry plants. They have a pleasant, tart taste, a favorite of people and other mammals as well as many birds. Read more about how to best identify this plant!

The Chert Wall

The Claremont Chert, named after our own canyon, is a type of marine sedimentary rock. It consists of hard, fine-grained silica, plus more friable shales and mudstones from ancient siliceous skeletons of microscopic creatures. These tiny skeletons and other materials were deposited over millions of years in off-shore basins—when the shoreline of the California coast looked quite different from today.