Volcanic Processes and Geology of Augustine Volcano, Alaska

ISBN-13: 9781496083289 / Angielski / Miękka / 2014 / 88 str.

U. S. Department of the Interior

Opis

Augustine Island (volcano) in lower Cook Inlet, Alaska, has erupted repeatedly in late-Holocene and historical times. Eruptions typically beget high-energy volcanic processes. Most notable are bouldery debris avalanches containing immense angular clasts shed from summit domes. Coarse deposits of these avalanches form much of Augustine's lower flanks. A new geologic map at 1:25,000 scale depicts these deposits, these processes. We correlate deposits by tephra layers calibrated by many radiocarbon dates.