How transform fault shear influences where detachment faults form near mid-ocean ridges.

ABSTRACT: Oceanic detachment faults represent an end-member form of seafloor creation, associated with relatively weak magmatism at slow-spreading mid-ocean ridges. We use 3-D numerical models to investigate the underlying mechanisms for why detachment faults predominantly form on the transform side (inside corner) of a ridge-transform intersection as opposed to the fracture zone side (outside corner). One hypothesis for this behavior is that the slipping, and hence weaker, transform fault allows for the detachment fault to form on the inside corner, and a stronger fracture zone prevents the detachment fault from forming on the outside corner. However, the results of our numerical models, which simulate different frictional strengths in the transform and fracture zone, do not support the first hypot

SUBMITTER: Schierjott JC 

PROVIDER: S-EPMC10247753 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature