The magmatic remnants of Ak-Ölöng
Permian syenites, also known as pegmatites, are geological formations in the desert terrain. They resulted from the eruption of magma to the Earth's surface. Pegmatites are extreme igneous rocks that form during the final stage of magma's crystallization.
They contain exceptionally large crystals. They also contain minerals that are rarely found in other types of rocks. These geological formations describe the final stage of Hercynian orogeny in the Tien Shan (295-276 Ma), after which the continental sedimentation stage began.
The Variscan or Hercynian orogeny was a geologic mountain-building event caused by Late Paleozoic continental collision between Euramerica and Gondwana to form the supercontinent of Pangaea.
Ak-Ölöng's Permian syenites are known for their large syenite crystals, which grow up to 30 cm long and have a coarse-grained structure with a grain size averaging 3-5 mm.
