Lithological features of stratigraphy and tectonic zoning of seismically active Zagros regional trough within the waters of the Persian Gulf

Abstract

The article discusses some features of the stratigraphy and the main points of the tectonic characteristics of the Zagros (Mesopotamian) regional deflection due to its seismic activity and oil and gas potential. The stratigraphy within the whole Pre-Zagrosky regional trough, despite its length, is similar in different parts, the main differences are related to the tectonic structure. The formation of the folds was mainly influenced by tectonic movements during the formation of alpine folding. A significant amount of work was carried out on the basis of the comprehensive analysis of the NEIC earthquake catalogs (The National Earthquake Information Center), formed by the United States Geological Survey. Ideas about the structure of the region under consideration were carried out on the basis of a study of literary sources, as well as the integration of data from previous author studies. Comparison of data on earthquakes that occurred in the period 2005-2017 and the reconstruction of the tectonic development of the region under consideration helped to establish links between earthquakes and tectonically active zones, and ultimately, determine the seismic hazard of different parts of the Persian Gulf. The article shows the main tectonic causes of earthquakes. The article has practical importance in predicting future natural phenomena and the position of their foci, as well as in determining the causes of events that have already occurred.

Keywords

• geology
• tectonics
• seismology
• earthquake
• Persian gulf