![29.5 Boulder-cobble conglomerate. Sonoma Coast State Park, California. This conglomerate shows a wide range of clast sizes from granules to boulders (such as the > 30 cm blue glaucophane schist boulder at the left). Clasts include a wide range of rock types including green mafic volcanic rocks, chert, and gray sandstones. [The part of the hammer handle showing is approximately 33 cm long, for scale.]](../29.5.JPG)
29.5 Boulder-cobble conglomerate. Sonoma Coast State Park, California. This conglomerate shows a wide range of clast sizes from granules to boulders (such as the > 30 cm blue glaucophane schist boulder at the left). Clasts include a wide range of rock types including green mafic volcanic rocks, chert, and gray sandstones. [The part of the hammer handle showing is approximately 33 cm long, for scale.]