| A directional perspective roughly southward through Mazourka Canyon, Inyo county, California. Rocks in view belong to the upper Mississippian Rest Spring Shale (reddish-brown material)--which yields localized accumulations of brachiopods, pelecypods, gastropods and ammonoids (an extinct variety of cephalopod distantly related to the modern chambered nautilus)--and the Pennsylvanian Keeler Canyon Formation (grayish strata). Photograph taken by an individual named William Burdette Johnson; I cropped and processed it through photoshop. |