Sample: UM20

Sample ID:	UM20 ^[1] ^[2] ^[3]
Station ID:	UM20
AT Num:
Volcano:	Cone B
Possible source:
Eruption:
Collector:	Kay, R. W.
Date sampled:
Sample type 1:	Lava
Color:
Final unit:
Text Description:	Description from Walker (1974): Basalt andesite flow from cone B inside caldera. Description from Kay et al. (1978): Basaltic andesite. Flow from Byers' (1959) Cone B at southern terminus. Color value from rock-color chart distributed by the Geological Society of America: (N3, IVc)
Sample Location:

References Cited

[1] Trace element variation in the volcanic rocks of Adak and Umnak Islands of the Aleutian Arc, 1974

Walker, A. T. III., 1974, Trace element variation in the volcanic rocks of Adak and Umnak Islands of the Aleutian Arc: Columbia University unpublished M.S. thesis, 39 p.

[2] Pb and Sr isotopes in volcanic rocks from the Aleutian Islands and Pribilof Islands, Alaska, 1978

Kay, R. W., Sun, S. S., and Lee-Hu, C. N., 1978, Pb and Sr isotopes in volcanic rocks from the Aleutian Islands and Pribilof Islands, Alaska: Geochimica et Cosmochimica Acta, v. 42, p. 263-274.

[3] Lead isotope studies of young volcanic rocks from oceanic islands, mid-ocean ridges, and island arcs, 1974

Sun, S. S., 1974, Lead isotope studies of young volcanic rocks from oceanic islands, mid-ocean ridges, and island arcs: Columbia University Ph.D. dissertaion, 139 p.

Alaska Volcano Observatory

Sample: UM20

References Cited

[1] Trace element variation in the volcanic rocks of Adak and Umnak Islands of the Aleutian Arc, 1974

[2] Pb and Sr isotopes in volcanic rocks from the Aleutian Islands and Pribilof Islands, Alaska, 1978

[3] Lead isotope studies of young volcanic rocks from oceanic islands, mid-ocean ridges, and island arcs, 1974