Subject ASC0001dxs

The Quarterly journal of the Geological Society of London.
v.43 (1887), Page 315 (1887)
Natural History Museum Library, London
BHL Page 45996562

Keywords

Roscoff older rocks gneiss fine-grained granite dark porphyritic granite Quartz-feldespar #geologic formation Gneiss granite porphyritie Quartz-felspar layers fine grained granite phyritic granite quartz-feldspar grain

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Species