| 1. | A hornblende lamprophyre dyke in the Rozel Conglomerate is dated at.
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| 2. | Lamprophyre dykes of Late Permian age are found throughout Orkney.
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| 3. | Musselroe Bay nearby has a lamprophyre and basalt from.
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| 4. | Dolerite ( or diabase ) and lamprophyre dykes intruded.
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| 5. | On King Island, there was an intrusion of a biotite lamprophyre dyke at.
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| 6. | Cape Portland is host to andesite, lamprophyre and porphyrite intrusions and eruptions from.
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| 7. | The lamprophyre is an unusual igneous rock that contains a low content of silica.
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| 8. | There are two sets of lamprophyre dykes.
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| 9. | Modern nomenclature has been derived from an attempt to constrain some genetic parameters of lamprophyre genesis.
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| 10. | The dykes included a swarm of dolerite dykes, also lamprophyre, feldspar porphyry and aplite.
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