The BGS Lexicon of Named Rock Units — Result Details

Lawn Hill Conglomerate Member

Computer Code: YWOL Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Coarse, pebbly sandstone and conglomerate with pebbles of quartzite, rhyolite and felsite.
Definition of Lower Boundary: Taken at the transition from coarse sandstones into conglomerate within the Bayston-Oakswood Formation; about 550m of these sandstones separate the conglomerate from the underlying Oakswood Conglomerate Member.
Definition of Upper Boundary: Taken at the transition into coarse sandstones of the Bayston-Oakswood Formation.
Thickness: From 75 m to 150 m thick.
Geographical Limits: Welsh Borderlandsm, specifically Sheet 152 (Shrewsbury), 165 (Montgomery) and 166 (Church Stretton). Disappears laterally due to faulting or is concealed by superficial deposits.
Parent Unit: Bayston-Oakswood Formation (BAGP)
Previous Name(s): Lawn Hill Conglomerate (-2548)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Lawn Hill Pocock, R W, et al, 1938 
Reference(s):
Pocock R W, Whitehead T H, Wedd C B and Robertson T. 1938. Shrewsbury District including the Hanwood Coalfield. Memoir of the Geological Survey of Great Britain, England and Wales. (London: H.M.S.O.). 
Greig D C, Wright, J E, Hains, B A and Mitchell, G H. 1968. Geology of the country around Church Stretton, Craven Arms, Wenlock Edge and Brown Clee. Memoir of the Geological Survey, Sheet 166 (England and Wales). (London: H.M.S.O.). 379pp. 
Lapworth C and Watts W W. 1910. Shropshire. 739-769 in Geology in the field; the Jubilee Volume of the Geologists' Association (1858-1908). Monckton H W and Herries R S (editors). (London: Edward Stanford). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E152 E165 E166