New outcrops make good geology

This aerial view of the western part of Kilauea Volcano’s caldera was taken on August 6, 2018. The down-dropped block is faulted about 120 m (400 feet) below the caldera floor. Many 19th-century lava flows are exposed in the fault scarps. Halemaumau (not visible) is to the left of this photo. (D. Swanson/USGS Photo)

VOLCANOES NATIONAL PARK — A good field geologist is an opportunist. Never content with what outcrops are available, she jumps at the chance to see another one, hoping that it will provide a better understanding to some question about what happened in the past. But it isn’t every day that new outcrops are created, and rarer still when they are on the scale of those formed during the faulting of Kilauea Volcano’s caldera floor in summer 2018.