Murraysburg meander
1587 m
micro with pen
During the Northern Hemispheres Carboniferous Age, the Southern Hemisphere remained covered in ice, then about 250 million years ago, another profound change took place. The Southern Hemisphere became warm. The ice melted, life returned. Small swimming reptiles flourished in the slush and mud created by the melted ice. Their fossils are very numerous ans well preserved among the layers of ice-marked rocks, known as Dwyke Tillite, which covered the land surface. There rocks are made of mudstone, bluish-grey in colour and containing numerous pebbles and boulders scratched by ice.