（4）橄榄石－尖晶石相变使导电性增加。 所有这些现象都与潘诺尼亚盆地和喀尔巴阡地区特定的热状态和大地构造有密切的联系。

• and (4) Conductivity increas-es due to olivine-spinel phase transition. All of these phenomena are strongly related to the specialthermal state and tectonics of the Pannonian Basin and Carpathians.