Lithostratigraphical subdivision of the Triassic Sherwood Sandstone Group in West Cumbria

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doi: 10.1144/pygs.50.1.51
Authors:Barnes, R. P.; Ambrose, K.; Holliday, D. W.; Jones, N. S.
Author Affiliations:Primary:
British Geological Survey, Edinburgh, United Kingdom
Volume Title:Advances in West Cumbrian geology resulting from the NIREX investigations around Sellafield
Volume Authors:Holliday, D. W., convener; Rees, J. G.
Source:Advances in West Cumbrian geology resulting from the NIREX investigations around Sellafield, convened by D. W. Holliday and J. G. Rees. Proceedings of the Yorkshire Geological Society, Vol.50 (Part 1), p.51-60. Publisher: Yorkshire Geological Society, Leeds, United Kingdom. ISSN: 0044-0604
Publication Date:1994
Note:In English. 39 refs.; illus., incl. geol. sketch map, 1 table, sects.
Summary:The subdivisions of the Sherwood Sandstone Group, previously recognized on geophysical and lithological criteria in boreholes offshore in the East Irish Sea Basin, can be identified in the onshore exposures and boreholes of west Cumbria. The term St Bees Sandstone Formation is here restricted to the lower, fluvial, fine-grained sandstone, with claystone and siltstone partings, exposed around St Bees. This formation is sharply overlain by softer and coarser grained, aeolian and subordinate fluvial sandstone, which contains abundant, well-rounded aeolian sand grains, referred to the newly defined Calder Sandstone Formation. Higher sandstone has been separated from the Calder Sandstone Formation by its finer grain size and by geophysical log signatures. This is referred to the Ormskirk Sandstone and is dominantly aeolian in origin. Similar divisions of the Sherwood Sandstone Group can be recognized in the Carlisle Basin, and may also be present in other onshore areas, but await formal definition.
Subjects:Clastic rocks; Lithostratigraphy; Mesozoic; New names; Sandstone; Sedimentary rocks; Sherwood Sandstone; Triassic; Cumbria England; England; Europe; Great Britain; United Kingdom; Western Europe; Calder Sandstone; Saint Bees Sandstone
Abstract Numbers:95M/1544
Record ID:1996036021
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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