Paleostress Determination and Structural Analysis of the Area between Amman and Qasr Al-Hallabat, North Jordan

Authors

  • Masdouq M. Al-Taj Department of Earth and Environmental Sciences, Prince El Hassan Bin Talal Faculty for Natural Resources and Environment, The Hashemite University, Zarqa 13133, Jordan
  • Sumaia Yasin International Pioneers Academy, Amman, Jordan
  • Abdullah Diabat Department of Applied Earth and Environmental Sciences, Faculty of Earth and Environmental Sciences, Al al-Bayt University, Mafraq, Jordan

DOI:

https://doi.org/10.46717/igj.55.2E.1ms-2022-11-15

Keywords:

Amman-Hallabat structure, paleostress analysis, tensor program, transpression, transtension.‎

Abstract

This research derives paleostress tensors for deformation affecting late Cretaceous rocks between Amman and Al-Hallabat, northern Jordan and reconstructs the region's tectonic history. Three distinct formations are exposed in the investigated area: Wadi As Sir (Turonian), Wadi Umm Ghudran (Santonin), and Amman silicified limestone (Campanian). The stress inversion is derived from data collected on the fault-slip at four different locations, revealing both extensional and compressive regimes. The research region is divided into two sectors based on these paleostress regimes: a SW sector dominated by extensional to transtensive stress regimes (with a stress index varying from 0.68 to 0.80) and a NE sector characterized by compression (with a stress index ranging from 2.60 to 2.65). Furthermore, the SE stress sector is found to be consistent with the NNW-SSE Neogene extension. In contrast, the NE stress sector was associated with a Syrian Arc Stress Field orientated E-W to ESE-WNW throughout the late Cretaceous. Fracture analysis identifies two types of fractures within the study area: shear and extensional. Both fractures  This research derives paleostress tensors for deformation affecting late Cretaceous rocks between Amman and Al-Hallabat, northern Jordan and reconstructs the region's tectonic history. Three distinct formations are exposed in the investigated area: Wadi As Sir (Turonian), Wadi Umm Ghudran (Santonin), and Amman silicified limestone (Campanian). The stress inversion is derived from data collected on the fault slip at four different locations, revealing both extensional and compressive regimes. The research region is divided into two sectors based on these paleo stress regimes: an SW sector dominated by extensional to transtensive stress regimes (with a stress index varying from 0.68 to 0.80) and a NE sector characterized by compression (with a stress index ranging from 2.60 to 2.65). Furthermore, the SE stress sector is found to be consistent with the NNW-SSE Neogene extension. In contrast, the NE stress sector was associated with a Syrian Arc Stress Field orientated E-W to ESE-WNW throughout the late Cretaceous. Fracture analysis identifies two types of fractures within the study area: shear and extensional. Both fractures  

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Published

2022-11-22