Note: All of the diagrams shown in this post were part of my lecture given on board called, "Landscapes of Antarctica: Rocks, Ice, and Time."
...their positions at about 200 million years ago during the time of the Gondwana supercontinent. The blue X in East Antarctica marks the ancient location of the modern South Pole. Subduction occurred where the word Peninsula is shown and this was the setting for when most of the rocks in the Peninsula were formed.
Watch my next posting as we visit huge, tabular icebergs in Antarctic Sound and another Pleistocene volcano on the Peninsula!