EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

An inclination-only fold test

Yiming Ma1, Tianshui Yang2, Huapei Wang1, Shaochen Hu1, Mengqing Wang1, and Di Zou1
Yiming Ma et al.
  • 1China University of Geosciences, Wuhan, Wuhan, China (
  • 2China University of Geosciences, Beijing, Beijing, China

The fold test is inevitably used to determine whether a remanence is acquired prefold. The remanence declinations recorded in rocks may be affected by local rotation. Thus, it is difficult to restore the structure correction’s original orientation, leading to a possible incorrect conclusion of the fold test. However, the tilt correction of inclination is immune to the influence of local rotations. Therefore, we propose a more straightforward fold test based on the inclination-only mean. Examples are given to verify the validity of the inclination-only fold test, which can be applied to data affected by a possible local rotation. The inclination-only fold test should be used to determine the contribution of inclinations. The combined use of the 3-D and inclination-only fold tests is required to evaluate paleomagnetic results from the orogen or sampling sections with unrecognizable plunging folds or near the faults.

How to cite: Ma, Y., Yang, T., Wang, H., Hu, S., Wang, M., and Zou, D.: An inclination-only fold test, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-4094,, 2021.

This abstract will not be presented.