Abstract
KEYBAM is a system of interactive FORTRAN IV programs for accessing and operating on major-element whole-rock chemical analyses stored in data bank PETROS. KEYBAM's capabilities include subfile creation based on user-supplied criteria, normative calculations and rock classification, graphical displays including histograms, X—Y plots, triangular plots, and various statistical analyses based on the SPSS System. We have attempted to design KEYBAM so that it is machine independent and can be used for research and teaching in petrology at most modern computer installations.
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