[ 1 
|
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: 83407 |
|
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.
Subjects: Art
Key Stages: Foundation, KS1, KS2, KS3, KS4, KS4+ Learning Groups: Teachers, Parents, Pupils, Others |
