. Bulletin of the British Museum (Natural History), Geology. 136 LLANDOVERY CONODONTS. LEGEND Brown shale and mudstone Shale with sandstone beds Shale with calcareous beds Calcareous sandstone Sandy limestone SCALE 1 metre Fig. 4. Section at Gelli Farm Quarry, Llansantffraid ym Mechain. The base and top of the formation are not exposed. The horizons of samples Gelli Farm 1-6 are Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the o
. Bulletin of the British Museum (Natural History), Geology. 136 LLANDOVERY CONODONTS. LEGEND Brown shale and mudstone Shale with sandstone beds Shale with calcareous beds Calcareous sandstone Sandy limestone SCALE 1 metre Fig. 4. Section at Gelli Farm Quarry, Llansantffraid ym Mechain. The base and top of the formation are not exposed. The horizons of samples Gelli Farm 1-6 are Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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