Lower Coralline Limestone
Formation
- formed of corals and fossil algae called coralline algae
- it was formed in shallow water
Blue Clay
Characteristics
Characteristics
Uses
Formation
Special Feature
- pavements and road surface
- impermeable - water does not pass through it
- large quantities of particles from fossils prevented it from becoming solid rock
Special Feature
Uses
Upper Coralline Limestone
Formation
Characteristics
- similar to LCL, but contains different marine fossils
special feature
Uses
Greensand
Formation
- rarely more than 1 metre thick if present at all
- sand mixed with fossil remains
Characteristics & Special Feature
contains Glauconite, which is bright green when exposed to air or under a microscope, then it becomes yellow
Uses
None
fossils of large animals might be preserved
Globigerina Limestone
Uses
Special feature
Characteristics
Formation
- formed in deep water
- named after a microscopically small fossil shell called globigerina