Page "Antarctic Peninsula" Paragraph 28

The Fossil Bluff Group, which outcrops within Alexander Island, Antarctic Peninsula, provides a detailed record, which includes paleosols and fossil plants, of middle Cretaceous ( Albian ) terrestrial climates.

The sediments that form the Fossil Bluff Group accumulated within a volcanic island arc, which now forms the bedrock backbone of the Antarctic Peninsula, in prehistoric floodplains and deltas and offshore as submarine fans and other marine sediments.

As reflected in the plant fossils, paleosols, and climate models, the climate was warm, humid, and seasonally dry.

According to climate models, the summers were dry and winters were wet.

The rivers were perennial and subject to intermittent flooding as the result of heavy rainfall.