Syncline


Syncline

In structural geology, a syncline is a downward-curving fold, with layers that dip toward the center of the structure. A synclinorium is a large syncline with superimposed smaller folds. [Synclinorium. (2008). In Encyclopædia Britannica. Retrieved May 03, 2008, from Encyclopædia Britannica Online: http://www.britannica.com/EBchecked/topic/578375/synclinorium]

On a geologic map, synclines are recognized by a sequence of rock layers that grow progressively younger, followed by the youngest layer at the fold's center or "hinge", and by a reverse sequence of the same rock layers on the opposite side of the hinge. If the fold pattern is circular or elongate circular the structure is a basin. A notable syncline is Wyoming's Powder River Basin. Folds typically form during crustal deformation as the result of compression that accompanies orogenic mountain building.

A spectacular example of a perched syncline, the highest in Europe, is Saou, in the Alpine foothills of south-eastern France.

Gallery

ee also

*Anticline
*Homocline
*Ridge-and-valley Appalachians — With good bird's eye photo of a range of the types

References


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Look at other dictionaries:

  • Syncline — Syn*cline , n. (Geol.) A synclinal fold. [1913 Webster] …   The Collaborative International Dictionary of English

  • syncline — 1873, back formation from SYNCLINAL (Cf. synclinal) …   Etymology dictionary

  • syncline — [sin′klīn΄] n. [back form. < SYNCLINAL] Geol. a down fold in stratified rocks from whose central axis the beds rise upward and outward in opposite directions: opposed to ANTICLINE …   English World dictionary

  • syncline —     a) [ landform ]    A unit of folded strata that is concave upward whose core contains the stratigraphically younger rocks, and occurs at the earth’s surface. In a single syncline, beds forming the opposing limbs of the fold dip toward its… …   Glossary of landform and geologic terms

  • syncline — sinklina statusas T sritis ekologija ir aplinkotyra apibrėžtis Žemyn įlenkta (įgaubta) Žemės plutos sluoksnių raukšlė, kurios branduolyje slūgso jauniausi, o sparnuose – seniausi sluoksniai. atitikmenys: angl. synclinal fold; syncline vok. Mulde …   Ekologijos terminų aiškinamasis žodynas

  • syncline — loma statusas T sritis ekologija ir aplinkotyra apibrėžtis Pailga uždara įgaubto reljefo forma lėkštais šlaitais. atitikmenys: angl. syncline; trough vok. Mulde, f rus. логовина, f …   Ekologijos terminų aiškinamasis žodynas

  • syncline — noun Etymology: back formation from synclinal Date: 1873 a trough of stratified rock in which the beds dip toward each other from either side compare anticline …   New Collegiate Dictionary

  • syncline — /sing kluyn, sin /, n. Geol. a synclinal fold. [1870 75; back formation from SYNCLINAL] * * * …   Universalium

  • syncline — noun A concave upward fold in rock strata …   Wiktionary

  • syncline —    Downfolded stratum [16] …   Lexicon of Cave and Karst Terminology


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