| Computer Code: |
SYP |
Preferred Map Code: |
SyP |
| Status Code: |
Full |
| Age range: |
Ediacaran Period (AD)
— Ediacaran Period (AD) |
| Lithological Description: |
Grey to pale purple, massive, fine-grained matrix porphyritic (quartz and feldspar) dacite. Quartz phenocrysts commonly rounded and green in colour. |
| Definition of Lower Boundary: |
Sharp, possibly intrusive contact with Swannymote Breccia Member. Other contacts seen are faulted. |
| Definition of Upper Boundary: |
Sharp, possibly intrusive contact with Swannymote Breccia Member. Other contacts seen are faulted. |
| Thickness: |
c.0-450m |
| Geographical Limits: |
Exposed between High Sharpley and Whitwick Quarry. |
| Parent Unit: |
Whitwick Volcanic Complex (WVO)
|
| Previous Name(s): |
Porphyroid of Sharpley Type [Obsolete Name and Code: Use SYP]
(-1854)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
High Sharpley. |
| Reference(s): |
| Carney, J N. 1994. Geology of the Thringstone, Shepshed and Loughborough districts (SK41NW, SK41NE and SK51NW). British Geological Survey Technical Report WA/94/08. |
| Moseley, J and Ford, T D, 1985. A stratigraphic revision of the Late Precambrian rocks of Charnwood Forest, Leicestershire. Mercian Geologist, Vol.10(I), 1-18. |
| Watts, W W, 1947. Geology of the ancient rocks of Charnwood Forest, Leicestershire. Leicester: Leicester Literary and Philosophical Society. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E141
|
