Tectonic evolution of the Zagros foreland basin since Early Cretaceous, SW Iran: Regional tectonic implications from subsidence analysis

Lalami, Hamid Reza Karimnejad; Hajialibeigi, H; Sherkati, Shahram; Adabi, Mohammad Hossein

doi:10.1016/j.jseaes.2020.104550

Cited by 7 publications

(4 citation statements)

References 54 publications

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“…These studies attribute the lithospheric extension and subsequent rifting to the breakup of Gondwana and the opening of the Neo‐Tethys Ocean, respectively. Furthermore, the Permian rifting phase has been reported in other regions along the western, northern, and southern ends of the Tethys margin (e.g., Almutury & Al‐Asadi, 2008; Glennie, 1992; Lalami et al., 2020; Le Nindre et al., 2003; Muttoni et al., 2009; Tozer et al., 2020).…”

Section: Discussionmentioning

confidence: 86%

Subsidence and Uplift History of the UAE and the Western Flank of the UAE‐Oman Mountain Range

Jabir,

Ali,

Ismaiel

et al. 2023

Tectonics

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The western flank of the UAE‐Oman mountain range offers a unique geodynamic setting to study the development of a cratonic rift into a mature passive margin and its subsequent flexure under orogenic load. However, the geodynamic processes driving this evolution are not fully understood. In this study, seismic and biostratigraphic data from 283 exploration wells were utilized to assess the regional subsidence and uplift history of the United Arab Emirates (UAE) and neighboring areas of the western flank of the UAE‐Oman mountain range. Three major sequences have been identified: pre‐Permian, Permian‐Turonian rifted margin, and Coniacian‐Pleistocene active margin. Backstripping of biostratigraphic data reveals Early Permian (ca. 272 Ma) and Late Jurassic (ca. 160) rift phases, that have been linked to Gondwana's early and final fragmentation. A NE‐SW‐oriented basin in central UAE suggests a Jurassic intracratonic rift that has been influenced by pre‐existing structures. Compressional phases were identified during the Late Cretaceous and in the Oligocene‐Miocene, Compressional phases were identified during the Late Cretaceous and in the Oligocene‐Miocene, coinciding with the emplacement of the Semail ophiolite and the Arabian‐Eurasian plates collision, respectively. These events caused additional subsidence and flank uplift, forming the Aruma foreland basin in the east and the Pabdeh foreland basin in the eastern and northern UAE. Crustal thickness following the rift episodes ranges from 30 to 36 km, considering a sedimentary cover thickness of 11‐14 km. These estimates are in accord with Moho depths derived from teleseismic receiver functions and gravity inversion. These findings can be used to better understand Gondwana fragmentation and the opening and closing of the Neo‐Tethys Ocean.

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Section: Discussionmentioning

confidence: 86%

Subsidence and Uplift History of the UAE and the Western Flank of the UAE‐Oman Mountain Range

Jabir,

Ali,

Ismaiel

et al. 2023

Tectonics

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“…This characteristic indicates that the evaporitic Gachsaran Formation has acted as an active detachment level that led to the decoupling of deformation in the overlying sedimentary strata, which are geometrically unaffected by the HBNF, and underlying ones such as Hith/Gotnia Formation to the Ghachsaran Formation, which are geometrically affected and displaced by the HBNF movements. The effects of detachment levels mentioned above on folding, faulting, and the structural style of the area are also reported in the Persian Gulf and the ZFTB onshore area [e.g., Mohammadrezaei et al, 2020, Karimnejad Lalami et al, 2020, Ghanadian et al, 2017b,c, Soleimany and Sàbat, 2010.…”

Section: Discussionmentioning

confidence: 95%

The effects of wrench-dominated basement-involved faults on folding of overlying strata in the Bahregansar anticline, western Persian Gulf, Iran

Mohammadrezaei¹,

Alavi²,

Ghanadian³

et al. 2022

Comptes Rendus. Géoscience

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Basement-involved fault geometry and kinematics has a systematic effect on the structural style of the tectonic setting. In this study, 2D and 3D seismic datasets, well data as well as thickness and depth maps were utilized to consider and reconstruct the characteristics and effects of the wrench-dominated basement-involved fault underlying the Bahregansar anticline, which is a gentle, elongated and NW-SE-trending structure in the NW Persian Gulf, on the nature of its folded strata. Moreover, using the 2D sequential restoration, the deformation of the basement structural features was modelled and analysed for its influence on the reactivation of faulting. The results show that the major basement-involved fault, called the Hendijan-Bahregansar-Nowrooz Fault (HBNF), extends along the NE-SW-trending orientation and consist of several key anticlines. The structural evolution of the Bahregansar anticline has been deeply affected by Turonian folding phase and Pliocene Zagros orogeny associated with the HBNF. In the Upper Cretaceous, the HBNF propagated upward through the overlying sedimentary sequences when the inherited normal fault contractionally reactivated in the sinistral-reverse sense as the transpression zone in response to the Neo-Tethys oceanic plate subduction under the Eurasian plate. In this regard, the NNE-SSW-trending Bahregansar anticline (i.e., Arabian trend) formed as a forced fold. Continuing oblique convergence and associated deformation was accommodated by a change in the HBNF displacement sense from sinistral to dextral movement and buckling of the Bahregansar anticline as a result of the Pliocene Zagros orogeny.

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“…Notably, the highest values of the PI in the northwestern part of the study area do not correlate well with the other Based on FMI log interpretations, induced fractures occur in two opposite directio Most induced fractures indicate a NE-SW strike (N015 to N030), while the minority r resent an NWW-SEE strike (N285 to N300). Such stress behavior indicates the rotation maximum horizontal stress from the original NE-SW (parallel to the direction of the A bian plate push against the Zagros Trust Belt) to the recent NW-SE trends [41].…”

Section: The Relationship Between Fractures and Production Datamentioning

confidence: 99%

“…Most induced fractures indicate a NE-SW strike (N015 to N030), while the minority represent an NWW-SEE strike (N285 to N300). Such stress behavior indicates the rotation of maximum horizontal stress from the original NE-SW (parallel to the direction of the Arabian plate push against the Zagros Trust Belt) to the recent NW-SE trends[41].Figure 8 represents the rose diagram of all open fractures in the studied oilfield. Open fractures propagate in all directions, parallel or perpendicular to the maximum horizontal stress.…”

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confidence: 99%

A Comprehensive Investigation of the Relationship between Fractures and Oil Production in a Giant Fractured Carbonate Field

Kharrat,

Kadkhodaie,

Azizmohammadi

et al. 2024

Processes

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This study examines the connections between various fracture indicators and production data with an example from one of the giant fields in the Middle East producing complex fractured carbonate lithologies. The field under study hosts two reservoirs with a long development and production history, including carbonates from the Asmari and Bangestan Formations. A fracture intensity map was generated based on the interpretation of image logs from 28 wells drilled within the field. Mud loss data were collected and mapped based on the geostatistical Gaussian Random Function Simulation (GRFS) algorithm. Maximum curvature maps were generated based on Asmari structural surface maps. Comparing the results shows a good agreement between the curvature map, fault distribution model, mud loss map, fracture intensity map, and productivity index. The results of image log interpretations led to the identification of four classes of open fractures, including major open fractures, medium open fractures, minor open fractures, and hairline fractures. Using the azimuth and dip data of the four fracture sets mentioned above, the fracture intensity log was generated as a continuous log for each well with available image log data. For this purpose, the fracture intensity log and a continuous fracture network (CFN) model were generated. The continuous fracture network model was used to generate a 3D discrete fracture network (DFN) for the Asmari Formation. Finally, a 3D upscaled model of fracture dip and azimuth, fracture porosity, fracture permeability, fracture length, fracture aperture, and the sigma parameter (the connectivity index between matrix and fracture) were obtained. The results of this study can illuminate the modeling of intricate reservoirs and the associated production challenges, providing insights not only during the initial production phase but also in the application of advanced oil recovery methods, such as thermal recovery.

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Tectonic evolution of the Zagros foreland basin since Early Cretaceous, SW Iran: Regional tectonic implications from subsidence analysis

Cited by 7 publications

References 54 publications

Subsidence and Uplift History of the UAE and the Western Flank of the UAE‐Oman Mountain Range

Subsidence and Uplift History of the UAE and the Western Flank of the UAE‐Oman Mountain Range

The effects of wrench-dominated basement-involved faults on folding of overlying strata in the Bahregansar anticline, western Persian Gulf, Iran

A Comprehensive Investigation of the Relationship between Fractures and Oil Production in a Giant Fractured Carbonate Field

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