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
Fridtjof Nansen them. The edge of the pack ice was reached on 6 August and they shot the last of their dogs—the weakest of which they killed regularly to feed the other since 24 April. The two kayaks were lashed together, a sail was raised, and they made for the land. It soon became clear this land was part of an archipelago. As they moved southwards, Nansen tentatively identified a headland as Cape Felder on the western edge of Franz Josef Land. Towards the end of August, as the weather grew colder and travel became increasingly difficult, Nansen decided to camp for