Scotland buried beneath ice2.5m yearsago
Researchers in the northeast have discovered that their historical knowledge of Scotland’s big freezes was actually just the tip of the iceberg.
A team of Aberdeen University geoscientists has made a significant breakthrough over the understanding of a giant ice sheet which covered Scotland and much of the North Sea 2.5 million years ago.
At the time, the body of water was deeper and narrower, akin to a large fjord, and generated icebergs nearly 1,000ft high.
Due to seasonal changes in temperature, the ice sheet repeatedly merged and retreated with another which was covering Scandinavia, filling and emptying the channel.
Until now the scientific consensus was that deep freezing on this scale first happened around 1.1 million years ago.
But by using rare samples and seismic data, the researchers have discovered that it actually began a further 1.4 million years earlier.
Brice Rae from Aberdeen University, said it has “completely changed” scientists’ understanding of the topic.