| Computer Code: |
COTI |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Pleistocene Epoch (QP)
— Pleistocene Epoch (QP) |
| Lithological Description: |
A homogeneous sheet of dark brown, very sandy clay or clayey sand, coarsely laminated with sand interbeds and containing chalk pellets, rounded flints and shell fragments. |
| Definition of Lower Boundary: |
Underlain by the sandy Happisburgh Sand Member (HPSA) with an erosional contact. |
| Definition of Upper Boundary: |
Overlain by the Corton Sand Member (CORS). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
Norfolk. |
| Parent Unit: |
Happisburgh Glacigenic Formation (HPGL)
|
| Previous Name(s): |
Norwich Diamicton [Obsolete Name And Code: Use COTI]
(NDI)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Coastal cliff sections beneath Happisburgh lighthouse, located 1 km south-east of Happisburgh village. At this locality an 8 m-thick sequence is evident, comprising Happisburgh Till Member, Ostend Clay Member, Happisburgh Sand Member, Corton Till Member and Corton Sand Member (Lee et al., 2004). |
| Reference(s): |
| McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. |
| Banham, P H. 1971. Pleistocene beds at Corton, Suffolk. Geological Magazine, Vol. 108, 281-285. |
| Bridge, D M, and Hopson, P M. 1985. Fine gravel, heavy mineral and grain size analysis of mid-Pleistocene glacial deposits in the lower Waveney valley, East Anglia. Modern Geology, Vol. 9, 129-144. |
| 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. |
| Mitchell, G F, Penny, L F, Shotton, F W, and West, R.G. 1973. A correlation of Quaternary Deposits in the British Isles.Geological Society of London Special Report, No. 4.Scottish Academic Press, Edinburgh. |
| Baden-Powell, D F W, and West, R G. 1960. Summer field meeting in East Anglia. Proceedings of the Geologists' Association, Vol. 71, 61-80. |
| Rose, J, Lee, J A, Moorlock, B S P, and Hamblin, R J O. 1999. The origin of the Norwich Brickearth: micromorphological evidence for pedological alteration of sandy Anglian till in northeast Norfolk. Proceedings of the Geologists' Association, Vol. 110, 1-8. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
