MAZAMA AND GLACIER PEAK VOLCANIC ASH LAYERS - RELATIVE AGES

[1] ALDEN WC, 1953, 231 US GEOL SURV PRO

[2] ARMSTRONG JE, IN PRESS

[3] BRETZ JH, 1956, B GEOL SOC AMER, V67, P969

[4] BRETZ JH, 1932, 15 AM GEOGR SOC SPEC

[5] BRETZ JH, 1913, 8 WASH GEOL SURV B

[6] BUTLER BR, 1962, 9 ID STAT COLL MUS O

[7] BUTLER BR, 1961, 5 ID STAT COLL MUS O, P61

[8] CARITHERS W, 1946, 15 WASH DEP CONS DIV

[9] CHATTERS RM, 1964, PERSONAL COMMUNICATI

[10] CRANDELL DR, 1962, 450D US GEOL SURV PR

[1] ALDEN WC, 1953, 231 US GEOL SURV PRO

[2] ARMSTRONG JE, IN PRESS

[3] BRETZ JH, 1956, B GEOL SOC AMER, V67, P969

[4] BRETZ JH, 1932, 15 AM GEOGR SOC SPEC

[5] BRETZ JH, 1913, 8 WASH GEOL SURV B

[6] BUTLER BR, 1962, 9 ID STAT COLL MUS O

[7] BUTLER BR, 1961, 5 ID STAT COLL MUS O, P61

[8] CARITHERS W, 1946, 15 WASH DEP CONS DIV

[9] CHATTERS RM, 1964, PERSONAL COMMUNICATI

[10] CRANDELL DR, 1962, 450D US GEOL SURV PR