. Brigham Young University science bulletin. Biology -- Periodicals. BiOL<x;iCAL Series, Vol. 14, No. 2 Reconnaissance of Nohthern Yukon 19 â "iS|B!!iS5WS^"". <;^ Ijt^gf-' ifyt ..M Fig. 15. Cretaceous shale and sandstone at approximately 68°55' N; 138°.3r W, along the lower part of the Babbage River where the river has emerged from the British Mountains onto the Coastal Plain. Low country in the background is carved on soft Cretaceous sediments. Willow, alder, and dwarf birch heathland in fore- ground and along stabilized bar. age systems in the tundra and can be picked
. Brigham Young University science bulletin. Biology -- Periodicals. BiOL<x;iCAL Series, Vol. 14, No. 2 Reconnaissance of Nohthern Yukon 19 â "iS|B!!iS5WS^"". <;^ Ijt^gf-' ifyt ..M Fig. 15. Cretaceous shale and sandstone at approximately 68°55' N; 138°.3r W, along the lower part of the Babbage River where the river has emerged from the British Mountains onto the Coastal Plain. Low country in the background is carved on soft Cretaceous sediments. Willow, alder, and dwarf birch heathland in fore- ground and along stabilized bar. age systems in the tundra and can be picked out from some distance by its contrast with the pale or gray green of the tussock tundra (Fig. 19). Lake Margins In the tundra, the lakes are generally small and commonly shallow. The margins are fre- quently occupied by emergent plants. Principal among there are the sedge, Carex aquatilis. and the grass, Arctophila fuloa. Tlie wet meadows at the waters edge are dominated by the cotton grass, Eriophonim angtistifolium, and back from the waters edge the vegetation is dominated by a thicket of low willows (Salix) and birches (Betula glandulosa). Interspersed among the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Brigham Young University. Provo, Utah : Brigham Young University
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