If in point A on Earth there is extensional tectonics (stress ellipsoid with Sigma 1, the maximum stress, directed vertically) and in point B not too far there is compressional tectonics (stress ellipsoid with Sigma 3, the minimum stress, directed vertically), somewhere in the intermediate region you should reasonably expect to have a strike-slip or transcurrent tectonic regime (stress ellipsoid with Sigma 2, the intermediate stress, directed vertically), either transtensional or transpressional according to the local circumstances.

In plainer geological terms, ahead of a trust and fold belt there is always some evidence of transcurrent tectonics, often concealed under relatively young sediments in the foreland side of the foredeep.

The transition between compressional and tensional tectonics is less visible at surface at the back of a trust and fold belt (e.g. between the main body of the trust belt and the possible back-arc basin behind), because such transition could take place at different crustal levels in the same geographic area, and tensional tectonics would prevail at surface because of the general uplift of the mountain chain.

Dear Dr. Roberto

Any model based  study exists?

In internal parts of folded belts extensional collapse can occur following thrusting because the crust is overthickened, becomes unestable and collapses, in these areas Negative Inversion is common ( i. e. Thrust faults that reactivate as normal faults) and additional normal faulting above thrust sheets. Himalayas, Western Alps, Canadian Rockies, Pyrenees and Betic Cordillera are examples of those.

In foreland areas in front of compressional structures, flexural extension characterized by normal fualts occurs due to the flexure generated by thrust sheet loading. If compression further propagates also inversion of previous flexural normal faults can occur. In other caes thrusting can use normal fault steps for ramping generated complex wedges. The best example I know is the Western Venezuela fold and thrust belt just north of the worlds oil larges accumulation the so-called Faja de Orinoco ( Heavy oil belt).