Pinnacle (geology)
A pinnacle, tower, spire, needle or natural tower (
rock needle.[1]
Formation
The rock tower was created as a result of mechanical
ridge.[2] Its shape is the result of mechanical weathering and the attitude of the rock, or the subsidence of the slope. On the sea coast, rock towers are created by abrasion and isolation of the more resistant parts of the worn and abraded coast (cliff).[3]
Distribution
Rock towers are found in various parts of the world. They are found on the edges of high mountains and tabular plateaus, such as the buttes in arid regions, or on heavily disturbed rocky coasts. However, they are most often found in the area of sandstone rock towns.[4]
Examples are the summits of the
Drei Zinnen and the Vajolet Towers in the Dolomites, which are rich in such towers. An area of limestone formations within Nambung National Park, near the town of Cervantes, Western Australia, is known as The Pinnacles
.
Gallery
-
Cerro Torre 3,133 m (south flank ~2,150 m), Patagonia, Argentina/Chile -
The Barbarine (43 m high), Saxon Switzerland, Germany -
The Vajolet Towers 2,790 m (main tower 120 m high), South Tyrol, Italy -
-
The Pinnacles, Nambung National Park, Western Australia -
-
Top of the Rock Golf Course Limestone Pinnacles (excavated to a depth of 60 m in areas), Branson, Missouri, USA -
Debre Sema'itrock church on the top of a pinnacle in Ethiopia
See also
- Hoodoo
- Kigilyakh
- Pinnacles National Park
- Pyramidal peak
- Stack (geology)
- Totem pole (Monument Valley)
- Trango Towers
References
- ISBN 978-80-244-1749-3.
- ISBN 978-80-244-1749-3.
- ^ Atlas skalních, zemních a půdních tvarů (1 ed.). Academia. pp. 68–69.
- ^ Atlas skalních, zemních a půdních tvarů (1 ed.). Academia. pp. 68–69.
Bibliography
- ISBN 978-80-200-1773-4
- Josef Rubín, Břetislav Balatka, Vojen Ložek, Miroslav Malkovský, Vlastimil Pilous, Jan Vítek : Atlas of rock, earth and soil forms, Academia Prague, 1986, 1st edition, 388 pages, 21-033-86
External links
Wikimedia Commons has media related to Natural towers.
- Vista aèria del Desert dels Pinacles Google Maps
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