![29.3 Polymict pebble to cobble conglomerate. Russian Gulch, Sonoma Coast State Park, California. This conglomerate is distinctive in its inclusion of clasts of red radiolarian chert, green chert, and green mafic volcanic rock clasts, but it includes a variety of sandstone and other rock clasts, as well. Clast shapes are well rounded to subangular. [The scale shown is about 6 cm in length.]](../29.3.JPG)
29.3 Polymict pebble to cobble conglomerate. Russian Gulch, Sonoma Coast State Park, California. This conglomerate is distinctive in its inclusion of clasts of red radiolarian chert, green chert, and green mafic volcanic rock clasts, but it includes a variety of sandstone and other rock clasts, as well. Clast shapes are well rounded to subangular. [The scale shown is about 6 cm in length.]