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Arctica, or Arctida [1] is a hypothetical ancient continent which formed approximately 2.565 billion years ago in the Neoarchean era. It was made of Archaean cratons , including the Siberian Craton , with its Anabar / Aldan shields in Siberia , [ 2 ] and the Slave , Wyoming , Superior , and North Atlantic cratons in North America. [ 3 ]
The Arctic Circle is one of the two polar circles, and the most northerly of the five major circles of latitude as shown on maps of Earth at about 66° 34' N. [1] Its southern equivalent is the Antarctic Circle. The Arctic Circle marks the southernmost latitude at which, on the winter solstice (which is the shortest day of the year) in the ...
Lake Hazen is a freshwater lake in the northern part of Ellesmere Island, Nunavut, Canada, north of the Arctic Circle . It is the largest lake north of the Arctic Circle by volume. By surface area it is third largest, after Lake Taymyr in Russia and Lake Inari in Finland. The area around the lake is a thermal oasis within a polar desert, with ...
Arctic. The Arctic Circle, currently at roughly 66° north of the Equator, defines the boundary of the Arctic seas and lands. A political map showing land ownership within the Arctic region. Artificially coloured topographical map of the Arctic region. MODIS image of the Arctic. The Arctic (/ ˈɑːrtɪk / or / ˈɑːrktɪk /) [1][Note 1] is a ...
The North American Arctic is on the left. The North American Arctic is composed of the northern polar regions of Alaska (USA), Northern Canada and Greenland. [ 1 ] Major bodies of water include the Arctic Ocean, Hudson Bay, the Gulf of Alaska and North Atlantic Ocean. [ 2 ] The North American Arctic lies above the Arctic Circle. [ 3 ]
Lake Baikal is in a rift valley, created by the Baikal Rift Zone, where the Earth's crust is slowly pulling apart. [5] At 636 km (395 mi) long and 79 km (49 mi) wide, Lake Baikal has the largest surface area of any freshwater lake in Asia, at 31,722 km 2 (12,248 sq mi), and is the deepest lake in the world at 1,642 metres (5,387 feet; 898 fathoms).
The Arctic Archipelago, also known as the Canadian Arctic Archipelago, is an archipelago lying to the north of the Canadian continental mainland, excluding Greenland (an autonomous territory of Denmark) and Iceland (an independent country). Situated in the northern extremity of North America and covering about 1,424,500 km 2 (550,000 sq mi ...
Hudson Bay, [a] sometimes called Hudson's Bay (usually historically), is a large body of saltwater in northeastern Canada with a surface area of 1,230,000 km 2 (470,000 sq mi). It is located north of Ontario, west of Quebec, northeast of Manitoba, and southeast of Nunavut, but politically entirely part of Nunavut. [5]