![36.0 Siltstone (light gray) and mudshale (dark gray) occur between dark gray lithic wacke (above) and medium to light gray lithic wacke sandstone (below). Heaven's Beach, Sonoma Coast State Park, Sonoma County, California. [Scale is provided by 12 cm hammerhead in upper left.]](../36.0.JPG)
36.0 Siltstone (light gray) and mudshale (dark gray) occur between dark gray lithic wacke (above) and medium to light gray lithic wacke sandstone (below). Heaven's Beach, Sonoma Coast State Park, Sonoma County, California. [Scale is provided by 12 cm hammerhead in upper left.]