The Besa River Formation is a stratigraphical unit of Devonian age in the Western Canadian Sedimentary Basin .
10-640: It takes the name from Besa River , a tributary of the Prophet River , and was first described in outcrop near the Muskwa River , in the Muskwa Ranges by F.A. Kidd in 1963. The Besa River Formation is composed primarily of dark shale . Sandstone, bedded chert or limestone beds can occur at the top of the formation. The shale is slightly calcareous or siliceous and contains sponge spicules and radiolarians . The Besa River Formation reaches
20-614: A maximum thickness of 1,655 metres (5,430 ft) in the foothills . The lower Besa River Formation is faulted and folded in the Northern Rockies . It occurs in the sub-surface in east-central British Columbia , in the folded Rocky Mountain Thrust Belt and southern Mackenzie Fold Belt. The Besa River Formation is conformably overlain by the Prophet Formation or Banff Formation in its eastern extent, while to
30-865: The Fort Nelson River - part of the Mackenzie River system. The river rises at Fern Lake in the Bedaux Pass in the Northern Rocky Mountains . From there, it flows generally east, then north, and then east again to meet with the Fort Nelson River just east of the town of Fort Nelson . The river drops approximately 1,100 metres (3,600 ft), its course taking it down the Rocky Mountain foothills through sub-alpine and boreal forest to meander across
40-522: The Prophet River as a right tributary, at an elevation of 820 meters (2,690 ft). Its waters are carried via the Prophet River, Muskwa River , Fort Nelson River , Liard River and Mackenzie River , ultimately into the Arctic Ocean . Muskwa River The Muskwa River flows 257 kilometres (160 mi) through northern British Columbia , Canada . It is a major tributary of
50-652: The Prophet River . The river flows through the Muskwa Ranges , and is the backbone of the Redfern-Keily Provincial Park , part of the larger Muskwa-Kechika Management Area . It gives the name to the Besa River Formation , a stratigraphical unit of the Western Canadian Sedimentary Basin . The Besa River headwaters are found high in the Muskwa Ranges of the Northern Rockies , on the slopes of
60-598: The Great Snow Mountain, Great Rock Peak, Mount Circe and Mount Eurylochos, where it draws water from glaciers such as the Ithaca Glacier. The river flows eastwards through the Redfern-Keily Provincial Park , established along the upper course of the Besa River and its tributaries. It flows east and south-east, between the peaks of Redfern Mountain to the north and Mount Ulysses and Mount Penelope to
70-550: The forest and muskegs of the vast Liard River plains. From mouth to headwater, prominent tributaries include the Prophet River , Tuchodi River , and Gathto Creek . Much of the upper portions of this wilderness river and its watershed are located in the Northern Rocky Mountains Provincial Park , which is part of the larger Muskwa-Kechika Management Area. The region is a popular wilderness recreation destination. A geological unit ,
80-618: The south, it passes into the Dunedin Formation , Horn River Formation and Exshaw Formation . To the east it transforms into the calcareous Rundle Group and Stoddart Group . It is stratigraphically equivalent with the Fort Simpson Formation , as well as the Canol Formation and Earn Group . Besa River Besa River is a river in northern British Columbia , Canada . It is a tributary of
90-621: The south, receiving waters from the Achaean Glacier. It then flows through the Redfern Lake , then turns north around Mount Dopp, after receiving the waters of Fairy Lake and Nordling Creek. The Petrie Creek and Keily Creek also flow into the Besa River, which then turns east, then north again after receiving the Neves Creek. Granger Creek also flows in the Besa River west of Klingzut Mountain. Shortly after, Besa River flows into
100-858: The west it is overlain by the Mattson Formation and Stoddart Group , and abruptly overlays the Dunedin Formation in the west of its extent in British Columbia , and the Slave Point Formation in the east. In the Northwest Territories , it rests on the Nahanni Formation in the east and the Road River Formation in the west. Towards the southwest, it passes laterally into the Fort Simpson Formation and Exshaw Formation . To
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