| 词条 | Blackbeard Peak |
| 释义 |
| name = Blackbeard Peak | photo = Black Beard Peak 7241.jpg | photo_caption = Blackbeard Peak seen from the northeast on the North Cascades Highway | map = Washington#USA | map_caption = Location of Blackbeard Peak in Washington | map_size = | location = Skagit County, Washington, United States | coordinates = {{coord|48|32|09|N|120|47|08|W|type:mountain_region:US_scale:100000|format=dms|display=inline,title}} | coordinates_ref = [1] | elevation = {{convert|7241|ft|0|abbr=on}} | elevation_ref = [2] | isolation = | isolation_ref = | prominence = {{convert|361|ft|-1|abbr=on}} | prominence_ref = [3] | range = North Cascades | topo = USGS Mount Arriva | range_coordinates = | first_ascent = | easiest_route = Scrambling }} Blackbeard Peak, also spelled Black Beard Peak,[4] is the name of a 7,241 feet (2207 meters) summit in the North Cascades in the U.S. state of Washington. It is located in the Okanogan National Forest in Skagit County. It is situated northwest of Rainy Pass, southwest of Porcupine Peak, and southeast of Graybeard Peak. Its nearest higher peak is Repulse Peak, {{convert|1.06|mi|km|abbr=on}} to the west.[5] Blackbeard Peak can be seen from the North Cascades Highway. Precipitation runoff from Blackbeard Peak drains into Granite Creek, a tributary of the Skagit River. ClimateMost weather fronts originate in the Pacific Ocean, and travel northeast toward the Cascade Mountains. As fronts approach the North Cascades, they are forced upward by the peaks of the Cascade Range (Orographic lift), causing them to drop their moisture in the form of rain or snowfall onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall. During winter months, weather is usually cloudy, but, due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.[6] Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger.[6] GeologyThe North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks and ridges and deep glacial valleys. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences. These climate differences lead to vegetation variety defining the ecoregions in this area. The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch.[7] With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted.[7] In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.[7] During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[7] The "U"-shaped cross section of the river valleys are a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area. References1. ^{{cite peakbagger|37970|Blackbeard Peak, Washington}} {{stack|{{portal|Washington}}}}2. ^{{cite peakbagger|37970|Blackbeard Peak, Washington}} 3. ^{{cite peakbagger|37970|Blackbeard Peak, Washington}} 4. ^https://listsofjohn.com/peak/49369 5. ^{{cite peakbagger|37970|Blackbeard Peak, Washington}} 6. ^1 Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008. 7. ^1 2 3 {{cite book|last=Kruckeberg|first=Arthur|title=The Natural History of Puget Sound Country|publisher=University of Washington Press|year=1991}} See also{{Geographic Location 2| Center = Blackbeard Peak | North = North Cascades Highway | Northeast = Mount Hardy | ENE = Porcupine Peak | East = Cutthroat Peak | ESE = Whistler Mountain | Southeast = Crooked Bum | South = Corteo Peak | Southwest = Black Peak | WSW = | West = Repulse Peak | WNW = Fisher Peak | Northwest = Graybeard Peak | image = }} 3 : Mountains of Washington (state)|Mountains of Skagit County, Washington|North Cascades |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。