Boundary Butte (Rainbow Plateau)
Boundary Butte | |
---|---|
![]() Northwest aspect | |
Highest point | |
Elevation | 4,934 ft (1,504 m)[1] |
Prominence | 897 ft (273 m)[2] |
Parent peak | Tower Butte[2] |
Isolation | 2.58 mi (4.15 km)[2] |
Coordinates | 37°00′05″N 111°17′13″W / 37.0015162°N 111.2868553°WCoordinates: 37°00′05″N 111°17′13″W / 37.0015162°N 111.2868553°W[1] |
Geography | |
![]() ![]() Boundary Butte Location in Utah | |
Location | Navajo Reservation San Juan County, Utah, U.S. |
Parent range | Colorado Plateau |
Topo map | USGS Gunsight Butte |
Geology | |
Age of rock | Jurassic |
Type of rock | Entrada Sandstone |
Climbing | |
Easiest route | class 5.x climbing[2] |
Boundary Butte is a 4,934-foot (1,504 meter) elevation sandstone summit located south of Lake Powell, in extreme southwestern San Juan County, Utah, United States, just north of the Arizona border.[1] It is situated on Navajo Nation land, 11.5 miles (18.5 km) northeast of the town of Page, and towers 1,200 feet above the lake as a landmark of the area. It lies on the Utah-Arizona border, hence its name.
Geology[]
Boundary Butte is a butte composed primarily of Entrada Sandstone, similar to Dominguez Butte 2.5 miles (4.0 km) to the north, and Tower Butte 2.6 miles (4.2 km) to the southwest. The Entrada Sandstone overlays Carmel Formation, and below that Page Sandstone at lake level. Above the Entrada layers is Romana Sandstone capped by Morrison Formation.[3] It is located in the southern edge of the Great Basin Desert on the Colorado Plateau. Precipitation runoff from this feature drains into the Colorado River watershed.
Gallery[]
Climate[]
According to the Köppen climate classification system, Boundary Butte is located in an arid climate zone with hot, very dry summers, and chilly winters with very little snow.[4] Spring and fall are the most favorable seasons to visit.
Climate data for Page, Arizona | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 64 (18) |
72 (22) |
82 (28) |
91 (33) |
102 (39) |
107 (42) |
109 (43) |
106 (41) |
100 (38) |
93 (34) |
77 (25) |
66 (19) |
109 (43) |
Average high °F (°C) | 43.1 (6.2) |
50.3 (10.2) |
59.5 (15.3) |
68.5 (20.3) |
78.5 (25.8) |
90.2 (32.3) |
95.1 (35.1) |
92.0 (33.3) |
83.5 (28.6) |
69.7 (20.9) |
53.8 (12.1) |
43.7 (6.5) |
69.0 (20.6) |
Average low °F (°C) | 26.3 (−3.2) |
30.4 (−0.9) |
37.0 (2.8) |
43.6 (6.4) |
52.6 (11.4) |
62.3 (16.8) |
68.3 (20.2) |
66.4 (19.1) |
58.4 (14.7) |
46.6 (8.1) |
34.7 (1.5) |
27.1 (−2.7) |
46.1 (7.8) |
Record low °F (°C) | −11 (−24) |
6 (−14) |
18 (−8) |
25 (−4) |
31 (−1) |
44 (7) |
56 (13) |
46 (8) |
40 (4) |
24 (−4) |
16 (−9) |
1 (−17) |
−11 (−24) |
Average precipitation inches (mm) | 0.61 (15) |
0.48 (12) |
0.65 (17) |
0.50 (13) |
0.40 (10) |
0.14 (3.6) |
0.58 (15) |
0.69 (18) |
0.66 (17) |
0.99 (25) |
0.56 (14) |
0.48 (12) |
6.74 (171.6) |
Average snowfall inches (cm) | 2.1 (5.3) |
1.2 (3.0) |
0.2 (0.51) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0.5 (1.3) |
1.4 (3.6) |
5.4 (13.71) |
Average precipitation days (≥ 0.01 in) | 4.5 | 4.0 | 5.2 | 3.5 | 3.2 | 1.7 | 4.6 | 5.2 | 4.5 | 4.3 | 3.2 | 3.9 | 47.8 |
Average snowy days (≥ 0.1 in) | 0.9 | 0.6 | 0.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0.6 | 2.6 |
Source: NOAA[5] |
See also[]
References[]
- ^ a b c "Boundary Butte". Geographic Names Information System. United States Geological Survey. Retrieved 2020-11-18.
- ^ a b c d "Boundary Butte - 4,997' UT". listsofjohn.com. Retrieved 2020-11-18.
- ^ T.C. Chidsey, Jr., D.A. Sprinkel, G.C. Willis, P.B. Anderson Lake Powell Geologic Guide, page 63.
- ^ Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11. ISSN 1027-5606.
- ^ "Climatography of the United States No. 20 (1971–2000)" (PDF). National Oceanic and Atmospheric Administration. 2004. Retrieved 2010-05-31.[permanent dead link]
External links[]
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Wikimedia Commons has media related to Boundary Butte (Rainbow Plateau). |
- Weather forecast: National Weather Service
- Colorado Plateau
- Landforms of San Juan County, Utah
- Geography of the Navajo Nation
- Lake Powell
- Buttes of Utah
- North American 1000 m summits
- Sandstone formations of the United States