| Computer Code: |
3TAW4 |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Pleistocene Epoch (QP)
— Pleistocene Epoch (QP) |
| Lithological Description: |
Stony, silty, sandy, clay. Trace tin ore (cassiterite). |
| Definition of Lower Boundary: |
Unconformable on shales and sandstones of Upper Carboniferous age. |
| Definition of Upper Boundary: |
Surface. |
| Thickness: |
Unknown. |
| Geographical Limits: |
Taw Valley, Devonshire between Umberleigh and North Tawton. |
| Parent Unit: |
Taw Valley Formation (TAW)
|
| Previous Name(s): |
River Terrace Deposits, 3 to 4 (Taw) [Obsolete Name and Code: Use 3TAW4]
(-1939)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Taw Valley and tributraries within Chumleigh district, Devonshire. Freshney et al. (1979). |
| Reference(s): |
| Freshney, E C, Beer, K E and Wright, J E. 1979. Geology of the country around Chumleigh. Memoir of the Geological Survey of Great Britain, Sheet 309 (England and Wales). |
| Edmonds, E A, Whittaker, A, and Williams, B J. 1985. Geology of the country around Ilfracombe and Barnstaple. Memoir of the British Geological Survey, Sheets 277 and 293 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E309
|
