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The causeway was formed during the early Tertiary period some 62 - 65 million years ago over a long period of igneous activity. Three lava outflows...
Continued Below Added: 29th Jun 2008 by Diane Earl
Unique Id: 83408 |
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Continued from above
occurred - the Lower, Middle and Upper Basalticwith deep inter-basaltic layer of reddish brown 'lithomarge' -rich in clay, iron and aluminium oxides formed during the lulls in activity. The hexagonal columns occur in the middle basalt layer a similar formation can be seen at Fingal's Cave, Staffa, Scotland. The pattern in the causeway stones formed as a result of rock crystallization in conditions causing accelerated cooling, this usually occurs when molten lava comes into immediate contact with water. Submitted by Parkfields Middle School. Submitted by Parkfields Middle School
Subjects: Art
Key Stages: Foundation, KS1, KS2, KS3, KS4, KS4+ Learning Groups: Teachers, Parents, Pupils, Others |
