US Geological Survey Bulletin

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Alsea Formation; an Oligocene marine sedimentary sequence in the Oregon Coast Range - 1975

Stratigraphy of the fine-grained facies of the Sisquoc Formation, Santa Maria Basin, California--Paleoceanographic and tectonic implications - 1998