Reconstruction of the paleostress field of the Kokdjot Block, Malyi Karatau ridge (South Kazakhstan)
DOI:
https://doi.org/10.21638/spbu07.2019.207Abstract
Reconstruction of the paleostress field of the Kokdjot Block, Malyi Karatau ridge (South Kazakhstan) was done as a result of the detailed structural study. Kink-bands and fold-axes were used for indicate stress field reconstruction. Study areas of the Kokdjot Block are located from the northwest to the southeast of the Kokdjot plateau and are characterized as both clastic sedimentary rocks of greenschist and phyllite facies of metamorphism and clastic and carbonates sedimentary rocks. Two stress fields have been identified as corresponding to Caledonian (Late Ordovician) and Hercynian deformations. The earlier tectonic event is characterized by horizontal compression of the northeastern trend and later tectonic event is characterized by the shear stress field at the west-north-west trend of the compression axis.
Keywords:
Kokdjot Block, Malyi Karatau ridge, stress field
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Articles of "Vestnik of Saint Petersburg University. Earth Sciences" are open access distributed under the terms of the License Agreement with Saint Petersburg State University, which permits to the authors unrestricted distribution and self-archiving free of charge.