axial trace

axial trace

[′ak·sē·əl ′trās]
(geology)
The intersection of the axial plane of a fold with the surface of the earth or any other specified surface; sometimes such a line is loosely and incorrectly called the axis.
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References in periodicals archive ?
A major antiform has been mapped with an axial trace extending over 1500 metres and a total target length of 3,000 metres.