Capricorn orogeny

Spanning one billion years, the Capricorn orogeny is marked by widespread deformation and intracratonal reworking.

The Leake Springs Metamorphics are a group of siliclastic metasedimentary rocks covering the northern two-thirds of the Gascoyne Province and grading into low-grade metasedimentary rocks of the Wyloo Group in the north.

During the Capricorn orogeny, these rocks were intruded by the tonalite, monzogranite, quartz diorite and syenogranite of the Moorarie Supersuite (including the Minnie Creek batholith).

A third event, preserved in the Limejuice Zone produced high-grade gneiss rock fabrics.

Between 1990 and 2004, some geologists proposed that the orogeny resulted from the collision of the Yilgarn and Pilbara cratons.