A tiny granitic mylonite zone. Once again, granitic material has been emplaced along the shear plane.
Granites love to emplace here.
The highly contorted Proterozoic gneisses from Kukolankangas, eastern Finland display a myriad of small scale shears as well as polyphase folds . Seperation of the Proterozoic Kukolankangas gneiss into rotated mesolithons with variably oriented foliations. Sharp truncation of a gneissic layer along an isolated small scale fault with significant displacement.