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
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