Alaska Volcano Observatory - Shishaldin Volcano: Aleutian high-alumina basalts and the question of plagioclase accumulation

SHISHALDIN VOLCANO: ALEUTIAN HIGH-ALUMINA BASALTS AND THE QUESTION OF PLAGIOCLASE ACCUMULATION

Fournelle, John, and Marsh, B. D., 1991, Shishaldin Volcano: Aleutian high-alumina basalts and the question of plagioclase accumulation: Geology, v. 19, n. 3, p. 234-237.

DATA TABLES *Not all tables in a publication may be listed. Not all tables from a publication have data entered in the database.

248: Chemical and modal data, Shishaldin (SH) and Atka (AT) volcanics

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* Note: Analyses by XRF (Franklin & Marshall College, J. Fournelle, analyst); data in weight percent. HAB= = high-Al basalt; Hi-Mg = high-Mg basalt; Fe-Ti = Fe-Ti basalt; And = andesite. FeOT = all iron as FeO. LOI = loss on ignition. Modes (volume %) calculated vesicle-free. Dacite modes for nonvesicular dome sample SH6 (SH117 is pumice). AT67 modes from Myers et al. (1986). Gmass = groundmass; plag = plagioclase; cpx = clinopyroxene; opaq = opaques. *

SAMPLES

AT1
AT67
SH5
SH25
SH15
SH9A
SH19A
SH134
SH117
SH22

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