The BGS Lexicon of Named Rock Units — Result Details
Runton Till Member
Computer Code: | RUTI | Preferred Map Code: | notEntered |
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Status Code: | Full | ||
Age range: | Pleistocene Epoch (QP) — Pleistocene Epoch (QP) | ||
Lithological Description: | The Runton Till Member consists of a dark grey to greyish brown matrix-supported diamicton that contains highly attenuated lenses and laminations of sand, chalk and reworked inclusions of older and more chalky till (Walcott Till Member). | ||
Definition of Lower Boundary: | The Runton Till Member rests unconformably upon preglacial marine deposits of the Wroxham Crag Formation. The boundary is sharp and planar and in places resembles a surface of decollement. The boundary is represented by a lithological change from sands and gravels to diamicton. | ||
Definition of Upper Boundary: | The Runton Till Member exhibits a gradational upper boundary with the Bacton Green Till, with a transition from massive, highly consolidated diamicton, to stratified diamicton. | ||
Thickness: | Up to 9m at stratotype locality. | ||
Geographical Limits: | The Runton Till Member crops out between East Runton and Sheringham on the north Norfolk coast. | ||
Parent Unit: | Sheringham Cliffs Formation (SMCL) | ||
Previous Name(s): | Laminated diamicton [Obsolete Name and Code: Use RUTI]
(-1155)
Third Cromer Till [Obsolete Name and Code: Use RUTI, BGTI] (-2606) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Coastal sections between West Runton (east) and Sheringham (west) in the vicinity of Beeston Hill, north Norfolk. Hart and Boulton, 1991. | ||
Reference(s): | |||
Lee, J R, Booth, S J, Hamblin, R J O, Jarrow, A M, Kessler, H, Moorlock, B S P, Morigi, A N, Palmer, A, Riding, J B and Rose, J. 2004. A new stratigraphy for the glacial deposits around Lowestoft, Great Yarmouth, North Walsingham and Cromer, East Anglia, UK. Bulletin of the Geological Society of Norfolk, Vol.53, 3-60. | |||
Lee, J R. 2003. Early and Middle Pleistocene lithostratigraphy and palaeoenvironments in northern East Anglia, UK. Unpublished PhD Thesis, Royal Holloway University of London. | |||
Banham, P H. 1968. A preliminary note on the Pleistocene stratigraphy of northeast Norfolk. Proceedings of the Geologists' Association, Vol.79, 507-512. | |||
Hart, J K and Boulton, G S. 1991. The interelation of glaciotctonic and glaciodepositional processes within the glacial environment. Quaternary Science Reviews, Vol.10, 335-350. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
none recorded or not applicable |