| Computer Code: |
LDMP |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Ordovician Period (O)
— Ordovician Period (O) |
| Lithological Description: |
Gabbro, microgabbro and dolerite, with subordinate microgranite, microdiorite, rhyolite; and intrusive breccia. |
| Definition of Lower Boundary: |
Includes all mafic plutonic intrusions in the Lake District of proved and inferred Ordovician age which includes the Carrock Fell Complex (CFCO) and the Haweswater Intrusions (HAWS). |
| Definition of Upper Boundary: |
Not defined. |
| Thickness: |
Not defined. |
| Geographical Limits: |
Within the Lake District Lower Palaeozoic inlier in Cumbria. |
| Parent Unit: |
Caledonian Supersuite (CIGSS)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Hunter, R H, 1980. The petrology and geochemistry of the Carrock Fell Gabbro-granophyre Complex, Cumbria. (University of Durham: PhD thesis.) |
| Millward, D. 2002. Early Palaeozoic magmatism in the English Lake District. Proceedings of the Yorkshire Geological Society, Vol. 54, Part 2, 65-93. |
| Millward, D, and Beddoe-Stephens, B. 1998. The Haweswater intrusions. British Geological Survey Technical Report WA/98/60. |
| Stephenson, D, Bevins, R E, Millward, D, Highton, A J, Parsons, I, Stone, P and Wadsworth, W J. 1999. Caledonian igneous rocks of the British Isles. (Peterborough: Joint Nature Conservation Committee.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E023
E030
|
