Types of explosive clasts found at the summit of Mauna Loa

Types of explosive clasts found in the debris fan deposits at the summit of Mauna Loa: (A) unaltered ponded lava flow, (B) unaltered pāhoehoe, (C) altered ponded lava flow, often has a red to pink hue, (D) thermally altered pāhoehoe, often has a red-to-pink hue, (E) gabbroic xenolith, the most crystalline rocks we found, (F) bread-crust outer surfaces and vesicular interiors or dense clasts with crackle or crazed surface rinds, (G) bread-crust due to quenching. USGS photos.