The BGS Lexicon of Named Rock Units — Result Details
Little Hangman Member
| Computer Code: | LHS | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Eifelian Age (DI) — Eifelian Age (DI) | ||
| Lithological Description: | Grey heterolithic beds, dominantly fissile silty mudstone ("shale") and siltstone, alternating with cross-bedded, fine-grained sandstone. | ||
| Definition of Lower Boundary: | Basal unit of 1m-thick bed with Myalina rests on rocks of the Sherrycombe Member (q.v.). | ||
| Definition of Upper Boundary: | Probably a transitional conformable junction with rocks of the Ilfracombe Slates Formation (q.v.); commonly faulted. | ||
| Thickness: | c.100m | ||
| Geographical Limits: | North Devon - west Somerset. | ||
| Parent Unit: | Hangman Sandstone Formation (HASA) | ||
| Previous Name(s): | Stringocephalus Beds
(STRB)
Little Hangman Sandstones [Obsolete Name and Code: Use LHS] (-4761) Stringocephalus Beds (STRB) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Eastern end of Wild Pear Beach, near Combe Martin, North Devon. | ||
| Reference(s): | |||
| Tunbridge, I P. 1978. North Devon - Lower and Middle Devonian: Hangman Sandstone Group. 9-13 in Scrutton, C T (Editor), A field guide to selected areas of the Devonian of south-west England. International Symposium on the Devonian System. (PADS 78). (Palaeontological Association). | |||
| Lane, R. 1965. The Hangman Grits - an introduction and stratigraphy. Proceedings of the Ussher Society, Vol.1, 166-167. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| none recorded or not applicable | |||