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| Quartz-feldspar porphyry sheet cutting Glendun Formation, Rock Port, Cushendun. |
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| © National Museums Northern Ireland 2003-19 |
|
| Quartz-feldspar porphyry sheet cutting Glendun Formation, Rock Port, Cushendun. |
| [ Return to previous page ] |
| © National Museums Northern Ireland 2003-19 |