The BGS Lexicon of Named Rock Units — Result Details
Lees Bottom Lava Member
Computer Code: | LSBB | Preferred Map Code: | LSBB |
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Status Code: | Full | ||
Age range: | Brigantian Substage (CX) — Brigantian Substage (CX) | ||
Lithological Description: | Vesicular and non-vesicular basalt. | ||
Definition of Lower Boundary: | Basalt lava of the Lees Bottom Lava Member is underlain by pale and medium grey limestone, locally tuffaceous, of the Monsal Dale Limestone Formation. | ||
Definition of Upper Boundary: | Basalt lava of the Lees Bottom Lava Member is overlain by pale and medium grey limestone of the Monsal Dale Limestone Formation. | ||
Thickness: | A thickness of 8.5 m is proved at the type locality. | ||
Geographical Limits: | Restricted to the area west of Ashford (SK 19 69), in the Peak District inlier. | ||
Parent Unit: | Monsal Dale Limestone Formation (MO) | ||
Previous Name(s): | Lees Bottom Basalt [Obsolete Name and Code: Use LSBB]
(-1670)
Lees Bottom Lava [Obsolete Name and Code: Use LSBB] (-3540) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Lees Bottom, near A6, Taddington Dale: 8.5 m thickness of vesicular basalt. Aitkenhead et al., 1985. | ||
Reference(s): | |||
Aitkenhead, N, Chisholm, J I, and Stevenson, I P. 1985. Geology of the country around Buxton, Leek and Bakewell. Memoir of the British Geological Survey, England and Wales Sheet 111. | |||
Walters, S G and Ineson, P R. 1981. A review of the distribution of and the correlation of igneous rocks in Derbyshire, England. Mercian Geologist, Vol. 8, 81-132. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E111 |