. Bulletin of the British Museum (Natural History), Geology. YORKSHIRE OOLITES AND LINCOLNSHIRE LIMESTONE 139 PENNINE LAND AREA. 15 20m,les Fig. 5. Palaeogeographic map of the Millepore/Whitwell Oolite marine transgression. Millepore Oolite as the Yons Nab Beds. The former is a siliceous limestone whilst the latter tends to be a shale/sandstone sequence. These higher beds represent the final stages in the marine transgression and do not extend as far north as the main marine transgression represented by the oolites beneath. The Yons Nab Beds are close to the delta front throughout their expose
. Bulletin of the British Museum (Natural History), Geology. YORKSHIRE OOLITES AND LINCOLNSHIRE LIMESTONE 139 PENNINE LAND AREA. 15 20m,les Fig. 5. Palaeogeographic map of the Millepore/Whitwell Oolite marine transgression. Millepore Oolite as the Yons Nab Beds. The former is a siliceous limestone whilst the latter tends to be a shale/sandstone sequence. These higher beds represent the final stages in the marine transgression and do not extend as far north as the main marine transgression represented by the oolites beneath. The Yons Nab Beds are close to the delta front throughout their exposed development. The palaeo- geographic interpretation of this marine episode illustrated in Text-fig. 5 is closely comparable to Smithson's (1942, fig. 15). Conclusions The land barrier in the vicinity of Market Weighton represented a stable area between subsiding basins to the south and the 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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