Pectols Pyramid

Pectols Pyramid is a 6,211-foot (1,893-meter) elevation summit located in Capitol Reef National Park, in Wayne County of Utah, United States. This iconic landmark is situated 2 mi (3.2 km) southeast of the park's visitor center, 1 mi (1.6 km) south of Navajo Dome, and 0.5 mi (0.80 km) southwest of Capitol Dome. Precipitation runoff from this feature is drained by the Fremont River, which in turn is within the Colorado River drainage basin. This geological feature's name honors Ephraim Portman Pectol (1875–1947), booster and founder of what would become Capitol Reef National Monument in 1937.[3]

Pectols Pyramid
Northwest aspect
Highest point
Elevation6,211 ft (1,893 m)[1]
Prominence407 ft (124 m)[2]
Isolation0.91 mi (1.46 km)[2]
Coordinates38°17′07″N 111°13′36″W[1]
Geography
Pectols Pyramid
Location in Utah
Pectols Pyramid
Pectols Pyramid (the United States)
LocationCapitol Reef National Park
Wayne County, Utah, US
Parent rangeColorado Plateau
Topo mapUSGS Fruita
Geology
Age of rockJurassic
Type of rockNavajo Sandstone

Geology

Pectols Pyramid is composed of Navajo Sandstone, which is believed to have formed about 180 million years ago as a giant sand sea, the largest in Earth's history.[4] In a hot, dry climate, wind blew over sand dunes, creating large, sweeping crossbeds which date to the Jurassic. Long after the sedimentary rocks were deposited, the Colorado Plateau was uplifted relatively evenly, keeping the layers roughly horizontal, but Capitol Reef is an exception because of the Waterpocket Fold, a classic monocline, which formed between 50 and 70 million years ago during the Laramide Orogeny.[5]

Climate

Spring and fall are the most favorable seasons to visit Pectols Pyramid. According to the Köppen climate classification system, it is located in a Cold semi-arid climate zone, which is defined by the coldest month having an average mean temperature below 32 °F (0 °C), and at least 50% of the total annual precipitation being received during the spring and summer. This desert climate receives less than 10 inches (250 millimeters) of annual rainfall, and snowfall is generally light during the winter.

Climate data for Capitol Reef Visitor Center, elevation 5,653 ft (1,723 m), 1981-2010 normals, extremes 1981-2019
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 58.6
(14.8)
68.3
(20.2)
78.3
(25.7)
84.4
(29.1)
94.6
(34.8)
100.2
(37.9)
100.8
(38.2)
97.9
(36.6)
95.4
(35.2)
86.1
(30.1)
70.4
(21.3)
61.5
(16.4)
100.8
(38.2)
Average high °F (°C) 40.6
(4.8)
46.4
(8.0)
54.7
(12.6)
65.0
(18.3)
74.5
(23.6)
85.3
(29.6)
90.4
(32.4)
87.9
(31.1)
80.2
(26.8)
66.1
(18.9)
51.3
(10.7)
40.6
(4.8)
65.3
(18.5)
Average low °F (°C) 17.8
(−7.9)
22.7
(−5.2)
30.2
(−1.0)
36.2
(2.3)
44.7
(7.1)
53.1
(11.7)
60.4
(15.8)
58.5
(14.7)
50.4
(10.2)
39.0
(3.9)
27.6
(−2.4)
18.2
(−7.7)
38.3
(3.5)
Record low °F (°C) −4.2
(−20.1)
−11.8
(−24.3)
9.1
(−12.7)
18.1
(−7.7)
27.2
(−2.7)
34.6
(1.4)
42.4
(5.8)
45.1
(7.3)
29.9
(−1.2)
11.7
(−11.3)
8.0
(−13.3)
−7.5
(−21.9)
−11.8
(−24.3)
Average precipitation inches (mm) 0.52
(13)
0.34
(8.6)
0.53
(13)
0.47
(12)
0.59
(15)
0.47
(12)
0.91
(23)
1.20
(30)
0.80
(20)
0.98
(25)
0.49
(12)
0.32
(8.1)
7.62
(194)
Average dew point °F (°C) 17.3
(−8.2)
20.8
(−6.2)
23.0
(−5.0)
24.5
(−4.2)
29.1
(−1.6)
32.0
(0.0)
40.0
(4.4)
41.8
(5.4)
34.8
(1.6)
28.2
(−2.1)
21.9
(−5.6)
17.5
(−8.1)
27.6
(−2.4)
Source: PRISM[6]

See also

References

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