Baltica data makes it difficult to locate the margin in the Arctic. Ordovician faunas indicate that most of Svalbard, including Bjørnøya, was part of Laurentia, but Franz Josef Land and Kvitøya (an eastern island of the Svalbard archipelago) most likely became part of Baltica in the Timanide Orogeny. The Taymyr Peninsula, in contrast, never was part of Baltica: southern Taymyr was part of Siberia whilst northern Taymyr and the Severnaya Zemlya archipelago were part of the independent Kara Terrane in the early Palaeozoic. The eastern margin, the Uralide orogen, extends from the Arctic Novaya Zemlya archipelago to the Aral Sea. The
Sukhoy Nos Sukhoy Nos Sukhoy Nos, also Sukhoi Nos () is a cape on Severny, the northern island of the archipelago Novaya Zemlya, belonging to Arkhangelsk Oblast of the Russian Federation, projecting into the Barents Sea. The site lies near the southwestern corner of the island, very close to the Matochkin Strait, which separates Severny from Yuzhny, the southern island of the archipelago. The cape is composed of black and reddish shale. Underwater sandbars are located off of the cape's northern shore. Numerous birds nest on the steep cliffs, particularly loons. It was known for being a site of nuclear testing for