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claire hepper

World's largest deep earthquake recorded

The seismology world may have a new leader in superlatives: On May 24, 2013, the largest, deep earthquake ever recorded struck beneath the Sea of Okhotsk, between the Kamchatka Peninsula and Russian mainland. Scientists are still puzzling over how such a large event could occur so deep.

30 Oct 2013

Ancient volcanic island arc blocked Antarctic current formation

There has long been a debate in the geological community over what caused the formation of the Antarctic ice sheet during the Eocene-Oligocene period about 30 million years ago. One of the widely accepted hypotheses is that the glaciation was triggered by the commencement of the Antarctic Circumpolar Current (ACC), an ocean current that circles Antarctica insulating the continent from the warm waters to the north, allowing the ice sheet to remain relatively stable.

11 Sep 2013