Oceanic basin an active - and growing - oceanic basin include an elevated mid-ocean ridge, flanking abyssal hills leading down to abyssal plains. The elements of an active oceanic basin often include the oceanic trench associated with a subduction zone. The Atlantic ocean and the Arctic ocean are good examples of active, growing oceanic basins, whereas the Mediterranean Sea is shrinking. The Pacific Ocean is also an active, shrinking oceanic basin, even though it has both spreading ridge and oceanic trenches. Perhaps the best example of an inactive oceanic basin is the Gulf of Mexico, which formed in Jurassic times and has
Cape Nansen Cape Nansen Cape Nansen () is a headland in the Greenland Sea, east Greenland, Sermersooq municipality. This cape is named after Fridtjof Nansen. Cape Nansen is an important geographical landmark. Cape Nansen is located to the northeast of the mouth of the Nansen Fjord in an indented area of the eastern Greenland coast where there is a succession of headlands with active glaciers in between. The cape lies 15 km to the east-northeast of the mighty Cape J.A.D. Jensen on Sokongen Island This headland has been defined by the International Hydrographic Organization as the Southwest limit of the Greenland Sea,