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- The medial line of an upfolded structure, from which the strata dip on either side.
- If a range of hills or a valley is composed of strata that on the two sides dip in opposite directions, the imaginary line that lies between them and toward which the strata on each side rise is called an anticlinal axis. See also: axis
Source: Dictionary of Mining, Mineral, and Related Terms
Sponsor: ISO/IEC 27005:2018