What stress causes this type of fault to form?

In terms of faulting, compressive stress produces reverse faults, tensional stress produces normal faults, and shear stress produces transform faults. *Terminology alert: Geoscientists refer to faults that are formed by shearing as transform faults in the ocean, and as strike-slip faults on continents.

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"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."