Mount Blackburn
From Wikipedia, the free encyclopedia
| Mount Blackburn | |
|---|---|
 Mount Blackburn from the southeast, looking up the Kennicott Glacier |
|
| Elevation | 16,390 feet (4,996 m) |
| Location | Alaska, USA |
| Range | Wrangell Mountains |
| Prominence | 11,634 feet (3,546 m)ranked 50th |
| Coordinates | |
| Topo map | USGS McCarthy C-7 |
| Type | Shield volcano |
| Age of rock | 3.4 to 5 million years |
| First ascent | 1958 (true summit) |
| Easiest route | North Ridge: snow/glacier climb |
- For the mountain by this name in Antarctica, see Mount Blackburn (Antarctica).
Mount Blackburn is the highest peak in the Wrangell Mountains of Alaska in the United States. It is the fifth highest peak[1] in the United States and the twelfth highest peak in North America. The mountain is an old eroded shield volcano, the second highest volcano in the United States behind Mount Bona and the fifth highest in North America. It was named in 1885 by Lt. Henry T. Allen of the U.S. Army after Joseph Clay Stiles Blackburn, a U.S. senator from Kentucky.[2]
The mountain's massif is covered almost entirely by icefields and glaciers, and is the principal source of ice for the Kennicott Glacier, which flows southeast over 20 mi (32 km) to just above the town of McCarthy. The mountain also contributes a large volume of ice to the north-flowing Nabesna Glacier and the Kuskulana Glacier system.
Mount Blackburn is a large, dramatic peak, with great local relief and independence from higher peaks. Its west face drops over 11,000 ft (3,350 m) to the Kuskulana Glacier in less than 4 horizontal miles (6 km). Its other faces drop 8,000-10,000 feet (2,440-3,050 m), all in less than 8 miles. The toe of the Kuskulana Glacier, less than 12 miles from the summit, lies at an elevation of 2,400 ft (730 m), giving a rise of 14,000 ft (4,270 m). While these figures speak to the peak's relief, one measure of its independence is that it is the 50th most topographically prominent peak in the world.[3]
The western of Blackburn’s two summits is the mountain’s highpoint, a fact that was not understood until the 1960s when the then new USGS maps came out. The first ascent of the west peak, and hence Mount Blackburn, was done on May 30, 1958 by Bruce Gilbert, Dick Wahlstrom, Hans Gmoser, Adolf Bitterlich, and Leon Blumer via the North (also called the Northwest) Ridge. This team made the first ascent of Blackburn, but did not even know it at the time due to the incorrect identification of the highpoint. In fact Blumer’s article in the 1959 American Alpine Journal is titled “Mount Blackburn - Second Ascent.”
Kennedy Peak, or East Blackburn, 16,286 ft (4964 m), is the eastern summit and the one that was originally thought to be the highest point. The first ascent of this summit was made in 1912 by Dora Keen and George Handy via the Kennicott Glacier (on the south side of the mountain) and East Face. This heady exploit was ahead of its time. Dora Keen, driven by a deep desire for the climb, solicited miners from the nearby Kennicott Copper Mine, and forged a route up the heavily crevassed East Face to the East Peak, but did not traverse over to the West Peak. Keen went on to write a famous article for the Saturday Evening Post titled, “First up Mount Blackburn.” In 1912, Keen and Handy thought they were on Blackburn’s highest point.
Today's standard route on the peak is the 1958 ascent route, the North (or Northwest) Ridge, which is approached from the Nabesna Glacier, on the north side of the mountain, opposite from Keen and Hardy's route. The route starts from an airstrip on the glacier at an altitude of 7,200 feet. It is a moderate climb by Alaskan standards (Alaska Grade 2).
[edit] References and notes
- ^ This is not counting the North Summit of Mount McKinley, which is sometimes counted as an independent peak and sometimes not.
- ^ USGS GNIS: Mount Blackburn. Retrieved on 2007-03-08.
- ^ Peaklist.org: 50 Most Prominent Peaks on Earth. Retrieved on 2007-03-09.
- Wood, Michael; Coombs, Colby (2001). Alaska: A Climbing Guide. Mountaineers Books. ISBN 0-89886-724-X.
- Richter, Donald H.; Danny S. Rosenkrans and Margaret J. Steigerwald (1995). Guide to the Volcanoes of the Western Wrangell Mountains, Alaska. USGS Bulletin 2072.
- Winkler, Gary R. (2000). A Geologic Guide to Wrangell—Saint Elias National Park and Preserve, Alaska: A Tectonic Collage of Northbound Terranes. USGS Professional Paper 1616. ISBN 0-607-92676-7.
- Richter, Donald H.; Cindi C. Preller, Keith A. Labay, and Nora B. Shew (2006). Geologic Map of the Wrangell-Saint Elias National Park and Preserve, Alaska. USGS Scientific Investigations Map 2877.
[edit] External links
- Maps and aerial photos
- WikiSatellite view at WikiMapia
- Topographic map from TopoZone
- Aerial image from TerraServer-USA
- Surrounding area map from Google Maps
- Location in the United States from the Census Bureau
