Changing tectonic settings through time: Indiscriminate use of geochemical discriminant diagrams

作者: Kent Condie

DOI: 10.1016/J.PRECAMRES.2015.05.004

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摘要: Abstract No one method should be used to identify ancient tectonic settings, and this is especially true for rocks older than 2.5 Ga, when Earth was changing from stagnant lid plate tectonics. The most useful application of geochemical discriminant diagrams constrain mantle source compositions, heterogeneity, the effects degree melting, mixing melts, crustal contamination. It only convergence evidence greenstones that includes rock association, stratigraphic variation, sediment types provenances, information syntectonic granitoids, geochemistry all we can make progress in understanding evolving settings on planet Earth.

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