what is its geological significance?
The crystalline basement rocks of mountains around the Arctic Ocean were recrystallized or formed during the Ellesmerian orogeny, the regional phase of the larger Caledonian orogeny in the Paleozoic, creating many of the reservoir for current day oil and gas deposits.
Arctic Ocean
The crystalline basement rocks of mountains around the Arctic Ocean were recrystallized or formed during the Ellesmerian orogeny, the regional phase of the larger Caledonian orogeny in the Paleozoic. Regional subsidence in the Jurassic and Triassic led to significant sediment deposition, creating many of the reservoir for current day oil and gas deposits. 
what is coconut crab? It is a species of terrestrial hermit crab, also known as the robber crab or palm thief. It is the largest land-living arthropod in the world what are the classification of the above mentioned species of crab? Squat lobsters and porcelain crabs describe the former mentioned Squat lobsters are dorsoventrally flattened crustaceans with long tails held curled beneath the cephalothorax. how are these classified? Squat lobsters were placed together in the superfamily Galatheoidea alongside the porcelain crabs of the family Porcellanidae. what is the evolution of the just mentioned type of crab? They are an example of carcinisation, whereby a noncrab-like animal (in this case a relative of a squat lobster) evolves into an animal that resembles a true crab. what is its diversity? Some 4723 extant species porcelain crab had been described, divided among these 30 genera what is its ecological significance? Porcelain crabs live in all the world's oceans, except the Arctic Ocean and the Antarctic. what are the climate in this ocean? Polar climate characterized by persistent cold and relatively narrow annual temperature ranges.
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Arctic Ocean [SEP] Geology
The crystalline basement rocks of mountains around the Arctic Ocean were recrystallized or formed during the Ellesmerian orogeny, the regional phase of the larger Caledonian orogeny in the Paleozoic. Regional subsidence in the Jurassic and Triassic led to significant sediment deposition, creating many of the reservoir for current day oil and gas deposits. During the Cretaceous the Canadian Basin opened and tectonic activity due to the assembly of Alaska caused hydrocarbons to migrate toward what is now Prudhoe Bay. At the same time, sediments shed off the rising Canadian Rockies building out the large Mackenzie Delta. The rifting apart of the supercontinent Pangea, beginning in the Triassic opened the early Atlantic Ocean.