[Link to USGS home page]

Digital Data for Volcano and Earthquake Hazards in the Crater Lake Region,
Oregon

By S.P. Schilling, S. Doelger, C.R. Bacon, L.G. Mastin, K.E. Scott,
and M. Nathenson

CD-ROM to accompany Open-File Report 97-487
U.S. Geological Survey


INTRODUCTION

 

[View of Crater Lake from the south rim of the caldera. The caldera formed 7,700 years ago by collapse of the volcano known as Mount Mazama during the largest explosive volcanic eruption in the past 400,000 years in the Cascades. The lava flows and volcanic deposits exposed in the caldera walls record the growth of Mount Mazama, which attained an elevation of roughly 12,000 feet before the caldera collapsed. The prominent cliff on the north rim of the caldera is Llao Rock, a lava flow that was erupted just 200 years before the caldera-forming eruption. The cinder cone and lava flows of Wizard Island were erupted within a few hundred years of formation of Crater Lake caldera. (USGS photograph taken by David E. Wieprecht, U.S. Geological Survey.)]
View of Crater Lake from the south rim of the caldera. The caldera formed 7,700 years ago by collapse of the volcano known as Mount Mazama during the largest explosive volcanic eruption in the past 400,000 years in the Cascades. The lava flows and volcanic deposits exposed in the caldera walls record the growth of Mount Mazama, which attained an elevation of roughly 12,000 feet before the caldera collapsed. The prominent cliff on the north rim of the caldera is Llao Rock, a lava flow that was erupted just 200 years before the caldera-forming eruption. The cinder cone and lava flows of Wizard Island were erupted within a few hundred years of formation of Crater Lake caldera.(USGS photograph taken by David E. Wieprecht, U.S. Geological Survey.)

DATA

 

PLOTFILES

 

LINKS

 

2007

U.S. Department of the Interior
U.S. Geological Survey

index.html
January 2012