Changes

Geologic structures at the surface, that were created by tectonic processes, can give a reliable indication of the principle stress orientations. Geological structures such as the volcanic vent alignment and active vertical fractures are formed perpendicular to the minimum horizontal stress and parallel to the maximum horizontal stress (see Figure 18).  

Geologic structures at the surface, that were created by tectonic processes, can give a reliable indication of the principle stress orientations. Geological structures such as the volcanic vent alignment and active vertical fractures are formed perpendicular to the minimum horizontal stress and parallel to the maximum horizontal stress (see Figure 18).  

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GeoWikiWriteOff2021-Tayyib-Figure18a.png|Figure 18(a) Volcanic vent alignment (from Fossen<ref name=Fossen />).

GeoWikiWriteOff2021-Tayyib-Figure18a.png|{{Figure number|18a}}Volcanic vent alignment (from Fossen<ref name=Fossen />).

GeoWikiWriteOff2021-Tayyib-Figure18b.png|Figure 18(b) Active vertical fracture (from Fossen<ref name=Fossen />).

GeoWikiWriteOff2021-Tayyib-Figure18b.png|{{Figure number|18b}}Active vertical fracture (from Fossen<ref name=Fossen />).

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