Tectonic controls on magmatic and sedimentary geochemistry

The quandary fiicing the user of discrimination diagrams is that tectonic environments do often carry a geochemical fingerprint but some of the fingerprints are not unique. Two possible solutions may be found and they are outlined here in 

1 An expert system for identifying the tectonic environment of ancient volcanic rocks (Pearce 1987r — —- 

An ideal way iil which to incorporate all the information embodied in the discrimination diagrams described in this chapter is to tise a computer-based expert system., An,expert system T Wch is able, on the basis of a 

This approach, albeit only a prototype, has the potential for expansion to include more elements (Hf, Th, Ta, V, Ni, Sc and the REE) and to include the information from sedimentary as well as volcanic rocks. 

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