Geology / Maps
The North Pole : 420 Million Years ago
The north polar area had little land. The Northern ice cap spread out from the pole over an area of land (at 7 o'clock direction) now part of far eastern Siberia.
With no land obstruction it is likely that a very strong circumpolar winds prevailed, somewhat like the roaring forties that circulate Antarctica today.
The only significant land mass (at 6 o'clock direction) is another part of Eastern Siberia that is destined to collide with the area to its north.