Alpha Ridge Island is interpreted to represent the cratonward extension of the Alpha Ridge. The Alpha Ridge is part of the High Arctic Large Igneous Province. Alpha Ridge The Alpha Ridge is a major volcanic ridge under the Arctic Ocean between the Canada Basin (off Ellesmere Island) and the Lomonosov Ridge. It was active during the formation of the Amerasian Basin. It was discovered in 1963. The highest elevation is about 2,700 m over the ocean floor. It is 200 to 450 km wide. The Alpha Ridge, Lomonosov Ridge, and Nansen-Gakkel Ridge are the three major ranges that divide the Arctic Ocean
Cape Nansen which is a line joining Cape Nansen with Straumnes, Iceland, the NW point of Iceland. 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