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layer of rock sandwiched between layers of weaker, more easily eroded rock. A strike ridge has a distinctly gentler sloping side (dip slope), that roughly parallels the inclined layer of erosion-resistant rock. The opposite side of a strike ridge is relatively short, steep or cliff-like slope (scarp
191:
An aeolian dune ridge is a ridge of sand piled up by the wind. A sand dune can be either a hill or ridge of sand piled up by the wind. A single sand dune can range in length from less than one meter to several tens of kilometers, their height can vary from a few tens of centimeters to a 150 meters.
176:
with a total of 16 subgroups. The groups and their subgroups are not mutually exclusive; landforms, including ridges, can belong to multiple subgroups. In this classification, ridges are found in the
Aeolian, Coastal Marine and Estuarine, Lacustrine, Glacial, Volcanic and Hydrothermal, Tectonic and
167:
An example of ridge classification is that of
Schoeneberger and Wysocki, which provides a relatively simple and straightforward system that is used by the USA National Cooperative Soil Survey Program to classify ridges and other landforms. This system uses the dominant geomorphic process or setting
215:
A beach ridge is a low, essentially continuous ridge of beach or beach-and-dune sediments piled up by the action of waves and currents on a shoreline beyond the present limit of storm waves and the reach of ordinary tides. They occur occurring singly or as one of a series of approximately parallel
159:
As in the case of landforms in general, there is a lack of any commonly agreed classification or typology of ridges. They can be defined and classified on the basis of a variety of factors including either genesis, morphology, composition, statistical analysis of
151:, or ice depending on its origin. A ridge can occur as either an isolated, independent feature or part of a larger geomorphological and/or structural feature. Frequently, a ridge can be further subdivided into smaller geomorphic or structural elements.
426:, usually develops in lava flows, especially when slow-moving lava beneath a solidified crust wells upward. The brittle crust usually buckles to accommodate the inflating core of the flow, thus creating a central crack along the length of the tumulus.
347:
An ice pressure ridge is a ridge of deformed ice along the boundaries of individual ice floes when the ice floes on a lake or ocean collide and compress their edges. The average height of a sea ice pressure ridge is between 5 and 30
463:, that vary from tens of meters up to 250 meters in height. Tindars are a piles of volcanic ash that have been generated by explosive subaqueous eruptions in a glacial meltwater-filled vault or lake within a glacier or ice sheet.
244:
where the valleys formed or other chance occurrences. This type of ridge is generally somewhat random in orientation, often changing direction frequently, often with knobs at intervals on the ridge top.
403:
A shutter ridge is a ridge that has moved along a fault line, blocking or diverting drainage. Typically, a shutter ridge creates a valley corresponding to the alignment of the fault that produces it.
127:. Limitations on the dimensions of a ridge are lacking. Its height above the surrounding terrain can vary from less than a meter to hundreds of meters. A ridge can be either
236:
terrain, the stream drainage valleys will leave intervening ridges. These are by far the most common ridges. These ridges usually represent slightly more
287:
A term applied by early explorers and settlers in the western United States to ridges that formed a rocky barrier to land travel, by analogy with ocean
623:
816:
646:
115:, or a combination of both separated from the surrounding terrain by steep sides. The sides of a ridge slope away from a narrow top, the
593:
568:
791:
699:
757:
260:
848:
371:, the volcanic activity forms new land between tectonic boundaries creating volcanic ridges at the spreading zone.
292:
38:
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843:
268:
44:
535:
Rules and recommendations for naming geological units in Norway, Norsk
Geologisk Tidsskrift 69, supplement 2
479:
300:
31:
751:
689:
413:
254:
A strike ridge is an asymmetric ridge created by the differential erosion of a hard, erosion-resistant,
807:
Smellie, J.L. (2013). "Quaternary
Vulcanism: Subglacial Landforms". In Elias, S.A.; Mock, C.J. (eds.).
691:
Utah place names : a comprehensive guide to the origins of geographic names : a compilation
342:
128:
263:, they form series of long, parallel, straight to arcuate ridges. Strike ridges are subdivided into
613:
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123:, with the terrain dropping down on either side. The crest, if narrow, is also called a
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105:
754:: A Handbook of Shock-Metamorphic Effects in Terrestrial Meteorite Impact Structures
662:
249:
588:(5th ed.). Alexandria, Virginia: American Geological Institute. p. 554.
722:
Timco, G.W.; Burden, R.P. (1997). "An analysis of the shapes of sea ice ridges".
515: – Geologic uplift of Earth's surface that is attributed to plate tectonics
375:
settling and erosion gradually reduces the elevations moving away from the zone.
210:
485:
17:
259:
slope) that cuts across the tilted layers of rocks. In foldbelts such as the
30:
This article is about the geography and geology concept. For other uses, see
765:
136:
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resistant rock, but not always – they often remain because there were more
509: – Geographic area containing several geologically related mountains
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are very large dunes, which can have smaller dunes superimposed on them.
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to classify different groups of landforms into two major groups,
811:(2nd ed.). New York, New York: Elsevier. pp. 780–802.
620:
186:
148:
139:, or a combination of these in origin and can consist of either
65:
584:
Neuendorf, K.K.E.; Mehl, J.P. Jr.; Jackson, J.A., eds. (2005).
694:. Salt Lake City, Utah: University of Utah Press. p. 65.
563:(3rd ed.). New York, New York: Routledge. p. 516.
337:
is a thin ridge of rock that is formed by glacial erosion.
299:. The usage may have originated with sailors during the
607:
605:
777:
775:
496:
Pages displaying wikidata descriptions as a fallback
446:
or both, bordered by rims that form circular ridges.
619:. National Soil Survey Center, Lincoln, Nebraska:
216:ridges that are roughly parallel to the shoreline.
641:. Berlin, Germany: Springer-Verlag. p. 458.
367:spreading zones around the world, such as at the
56:A strike ridge within the Appalachian Mountains.
37:"Ridgeline" redirects here. For other uses, see
476: – Elongated hill formed by glacial action
554:
552:
550:
548:
546:
544:
393:bordered by rim(s) that are circular ridge(s).
786:. Berlin, Germany: Springer. pp. 13–20.
164:data, or some combinations of these factors.
8:
614:"Geomorphic Description System, version 5.0"
291:as barriers to sea travel. Examples include
177:Structural, Slope, and Erosional subgroups.
612:Schoeneberge, P.J.; Wysocki, D.A. (2017).
325:activity may leave ridges in the form of
525:
303:to describe the gold-bearing ridges of
663:"Capitol Reef National Park – Geology"
624:Natural Resources Conservation Service
457:can create volcanic ridges, known as
7:
503: – Row of high mountain summits
724:Cold Regions Science and Technology
667:Capitol Reef National Park web site
809:Encyclopedia of Quaternary Science
669:. U.S. National Park Service. 2007
482: – Mountain or hill direction
25:
408:Volcanic and Hydrothermal ridges
79:Mountain main ridge – view from
782:Schmincke, Hans-Ulrich (2003).
494: – fluvial erosion feature
488: – Elongated line of hills
27:Long, narrow, elevated landform
431:Volcanic crater/caldera ridges
353:Tectonic and Structural ridges
1:
758:Lunar and Planetary Institute
736:10.1016/S0165-232X(96)00017-1
637:Pye., K.; Tsoar., H. (2008).
561:Fundamentals of geomorphology
455:Subglacial volcanic eruptions
389:strikes typically form large
261:Ridge-and-Valley Appalachians
537:. Oslo, Norway. p. 111.
104:is a long, narrow, elevated
880:
688:Van Cott, John W. (1990).
451:Volcanic subglacial ridges
293:Capitol Reef National Park
39:Ridgeline (disambiguation)
36:
29:
48:A mountain ridge in Japan
749:French, Bevan M (1998).
359:Oceanic spreading ridge
170:Geomorphic Environments
559:Huggett, R.J. (2011).
480:Fall line (topography)
301:Australian gold rushes
97:
69:
57:
49:
32:Ridge (disambiguation)
752:Traces of Catastrophe
533:Nystuen, J.P. (ed.).
438:often have a central
414:Pressure ridge (lava)
75:
63:
55:
47:
343:Pressure ridge (ice)
639:Sand and Sand Dunes
586:Glossary of Geology
418:A specific case of
381:Impact Crater ridge
319:Moraines and eskers
756:. Houston, Texas:
422:, also known as a
369:Mid-Atlantic Ridge
305:Bendigo, Australia
187:Aeolian dune ridge
113:structural feature
98:
70:
58:
50:
849:Erosion landforms
818:978-0-444-53643-3
648:978-3-540-85909-3
626:. pp. 25–52.
492:Interlocking spur
273:homoclinal ridges
234:dissected plateau
16:(Redirected from
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221:Erosional ridges
84:knife-edge ridge
68:can form ridges.
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854:Slope landforms
844:Montane ecology
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174:Other Groupings
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88:pyramidal peaks
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162:remote sensing
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155:Classification
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106:geomorphologic
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18:Mountain ridge
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705:. Retrieved
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671:. Retrieved
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250:Strike ridge
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129:depositional
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101:
99:
86:towards the
673:January 17,
232:In typical
211:Beach ridge
833:Categories
520:References
486:Hill chain
121:ridgecrest
859:Mountains
784:Volcanism
730:: 65–77.
436:volcanoes
373:Isostatic
269:flatirons
227:Dendritic
194:Megadunes
133:erosional
125:ridgeline
766:40770730
468:See also
387:asteroid
365:tectonic
327:moraines
295:and the
277:hogbacks
145:sediment
143:, loose
137:tectonic
109:landform
81:Koncheto
864:Oronyms
474:Drumlin
460:tindars
444:caldera
424:tumulus
348:meters.
323:Glacial
265:cuestas
256:dipping
238:erosion
141:bedrock
839:Ridges
815:
790:
764:
707:2 June
698:
645:
592:
567:
440:crater
434:Large
385:Large
331:eskers
275:, and
242:joints
95:Kutelo
91:Vihren
617:(PDF)
335:arête
333:. An
289:reefs
229:ridge
198:draas
117:crest
102:ridge
77:Pirin
66:tuyas
813:ISBN
788:ISBN
762:OCLC
709:2022
696:ISBN
675:2009
643:ISBN
621:USDA
590:ISBN
565:ISBN
329:and
284:Reef
172:and
149:lava
93:and
732:doi
442:or
363:In
196:or
119:or
835::
774:^
728:25
726:.
665:.
604:^
543:^
271:,
267:,
147:,
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131:,
111:,
100:A
821:.
796:.
768:.
738:.
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711:.
677:.
651:.
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307:.
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20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
