Definition of syncline in English:



  • A trough or fold of stratified rock in which the strata slope upwards from the axis.

    Compare with anticline
    • ‘At several localities a west-verging footwall syncline has developed as a consequence of westward transport on the overlying thrust sheet.’
    • ‘The faults have a systematic geometric relationship with folds, with anticlines in the mutual hanging walls of fault pairs and broader footwall synclines that define the shallow dish forms of the polygons.’
    • ‘A series of synclines and anticlines developed within the basin at several localities but most prominently south of the Aghios Georgios fault zone.’
    • ‘A series of transverse anticlines and synclines are observed that have axes orientated NE-SW, approximately perpendicular to the fault zone.’
    • ‘Complex folding makes detailed interpretations of the geological structure difficult, but the area essentially consists of a large, tightly folded syncline that strikes about N.20 [degrees] E.’


Late 19th century: from syn- ‘together’ + Greek klinein ‘to lean’, on the pattern of incline.