Traces of temperate rainforests located south of the Antarctic Circle 90 million years ago have been discovered by a team of scientists from the UK and Germany, a study published by Nature revealed.
The researchers scanned a part of the core from the region to discover pollen, preserved roots and remnants of flowers, which pointed to the existence of a rainforest 900 km south of the South Pole. The average temperature at the Antarctic Circle during the mid-Cretaceous period was thereby estimated to be around 12 degrees Celsius, challenging the possibility of an ice cap existing at the South Pole at that time.
The work also throws into doubt the current understanding of the climate models of that period, as the levels of CO2 in the atmosphere were much higher 115 million years ago than initially thought.was considered to be one of the warmest intervals in the last couple of hundred millions of years. Little was known about the environment in Antarctica during that period, but the new findings suggest that despite a four-month polar night, temperatures in the region at that time closely resembled the climate that exists in northern European countries today.