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<p><b>New page</b></p><div>== Bewcastle Member (BWCB), Carboniferous, Northern England Province==<br />
Bewcastle Member is part of the [[Lyne Formation]].<br />
=== Name ===<br />
Previously known as the Bewcastle Beds (Day, 1970)<ref name="day70"> Day, J B W.1970.Geology of the country around Bewcastle.''Memoir of the Geological Survey of Great Britain'', Sheet 12 (England and Wales). </ref>.<br />
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=== Lithology ===<br />
Cyclical sequences of sandstone, siltstone, mudstone and thin limestones, locally dolomitic (‘cementstones’); locally thin seatearths, nodular algal limestone and traces of coal (see Day, 1970<ref name="day70" />; Leeder, 1974<ref>Leeder, M R.1974.Lower Border Group (Tournaisian) fluviodeltaic sedimentation and palaeogeography of the Northumberland Basin.''Proceedings of the Yorkshire Geological Society'', Vol. 40, 129–180.</ref>).<br />
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=== Stratotype ===<br />
A partial type section that includes nearly all of the Bewcastle Member, from the Bogside Limestone to just above a probable equivalent of the Junction Limestone, is exposed in Ashy Cleuch (NY 5648 7698 to 5808 7665) (Day, 1970)<ref name="day70" />.<br />
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=== Lower and upper boundaries ===<br />
At Bewcastle, the lower boundary is defined at the base of the [[Bogside Limestone]], and is conformable on the alternating thin limestones, ‘cementstones’ and mudstones of the [[Lynebank Member]] (Figure 11, Column 2).<br />
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The upper boundary is conformable with the base of the lowermost algal bed (M.A.1 of Day, 1970)<ref name="day70" /> of the rhythmically alternating limestone and mudstone with nodular algal beds of the [[Main Algal Member]].<br />
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=== Thickness ===<br />
About 180 m at Bewcastle.<br />
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=== Distribution and regional correlation ===<br />
The Northumberland–Solway Basin, but described only in the Bewcastle region (Day, 1970)<ref name="day70" />.<br />
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=== Age ===<br />
Chadian to Arundian.<br />
== References ==<br />
<references/><br />
[[Category:Carboniferous lithostratigraphical nomenclature]]</div>Geosource>Volunteer 01