Document Type : Original Research Paper
Authors
1 Ph.D. Student, Faculty of Science, Golestan University, Gorgan, Iran
2 Assistant Professor, Research Institute for Earth Sciences, Geological Survey of Iran, Tehran, Iran.
3 Professor, Faculty of Geology, Milano-Bicocca University, Milan, Italy.
Abstract
The Dare Anjir and Fariman complexes in NE of Iran are considered as remnants. These complexes considering were located close to Palaeotethys suture zone, and thus they record its structural evolution. considering structural and petrological evidences and against previous opinions that considered Fariman complex as an accretionary wedge, these complexes seem to be remnants of a magmatic arc that formed as a result of subduction of the Palaeotethys beneath Turan plate in Permian-Triassic. Fariman complex may be divided into upper and lower parts. At least two deformation phases may be recognized in upper part of the Fariman complex. second deformation phase caused creation fault propagation folds, and probably was coeval with main deformation phase of Eo-Cimmerian that affected Aghdarband basin. Deformation style in Fariman and DareAnjir complex is compatible with strain partitioning proposed for Aghdarband transpressional zone as a result of oblique convergence between Iran and Turan during Eo-Cimmerian event.
Keywords
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