Definition from Wiktionary, the free dictionary
contractional (not comparable)
- of or related to contraction
2000 September 15, Cin-Ty Lee et al., “Osmium Isotopic Evidence for Mesozoic Removal of Lithospheric Mantle Beneath the Sierra Nevada, California”, in Science, volume 289, number 5486, DOI:10.1126/science.289.5486.1912, pages 1912-1916:
- Removal of SCLM can be accomplished by thermal erosion associated with a rising plume head, by extensional thinning of the lithosphere (and associated mantle upwelling), or by processes related to contractional tectonics [e.g., foundering of lithosphere during thickening, peeling of lithosphere, shearing away of lithosphere during shallow subduction, or erosion of lithosphere induced by flow in the mantle wedge above a subducting slab (1-5, 7 )].
1997 October 24, Philip England & Peter Molnar, “Active Deformation of Asia: From Kinematics to Dynamics”, in Science, volume 278, number 5338, DOI:10.1126/science.278.5338.647, pages 647-650:
- Bars show principal horizontal stresses; black bars correspond to contractional stress and white bars to extensional stress.