Stress fractures in a rock fragment embedded in volcanic breccia
alt="Stress fractures in a rock fragment embedded in volcanic breccia near Chamberlain Rock in the Santa Monica Mountains. The material of which the breccia is composed was probably deposited as a lahar about 16.1 to 13.1 m.y. ago." border="0">
Stress fractures in a rock fragment embedded in volcanic breccia near Chamberlain Rock in the Santa Monica Mountains. The material of which the breccia is composed was probably deposited as a lahar about 16.1 to 13.1 m.y. ago.