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Rare earth element (REE) patterns in chert clasts provide both an indication of the environment of deposition of the source succession and a means of recognising their provenance. The REE compositions of chert clasts in three Ordovician and Silurian conglomerates in the Southern Uplands of Scotland are compared to the REE fingerprints of their possible sources. The REE patterns of the clasts show...
Despite detailed classification, criteria to distinguish between marine and freshwater environments of deposition in fine-grained, non-clastic sedimentary rocks are scanty. Data on recent lacustrine and marine chemical precipitates reveal that these two environments can be distinguished in terms of their composition in the CaO-MgO-Na 2 O-K 2 O system provided carbonates and detrital...
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