Dextral transpressional shearing and strike-slip partitioning developments in the Central Myanmar Basin during the collision between the India Plate and West Myanmar Block

Khin, Kyi; Moe, Aung Zaw; Myint, Myo; Aung, Kyi Pyar

doi:10.1016/j.jaesx.2021.100055

Cited by 6 publications

(2 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zone widening upwards between inwarddipping walls is consistent with the geometric features of the faults in A common feature of the transpressional zone is the inclined transpression model, which includes the simultaneous action of contraction and oblique-slip shear (Dewey et al, 1998;Harland, 1971). Transpression deformation zones have been identified in the southern Uplands of Scotland (Tavarnelli et al, 2004); the central Myanmar basin (Khin et al, 2021); the Zagros of Iran (Rahnama et al, 2008); Alborz in northern Iran (Nabavi et al, 2017). Based on the analog models, transpressional deformation such as simple transpression, transpression combined with the erosion of uplifted areas of the hanging wall above the deformation front, and transpression combined with the erosion of the hanging wall and sedimentation at the foot of uplifted zones have been presented by Casas et al (2001).…”

Section: Regional Tectonics and Kinematic Implicationssupporting

confidence: 64%

Structure and kinematics of active faulting in the northern domain of Western and Central Alborz, Iran and interpretation in terms of tectonic evolution of the region

Rashidi

Nemati

Shafieibafti

et al. 2023

Journal of Asian Earth Sciences

View full text Add to dashboard Cite

Section: Regional Tectonics and Kinematic Implicationssupporting

confidence: 64%

Structure and kinematics of active faulting in the northern domain of Western and Central Alborz, Iran and interpretation in terms of tectonic evolution of the region

Rashidi

Nemati

Shafieibafti

et al. 2023

Journal of Asian Earth Sciences

View full text Add to dashboard Cite

“…Left-lateral and right-lateral strike-slip faults with their shear fractures indicates strike-slip component of the strain partitioning in the inclined transpression zone. Transpression deformation zones have been identified in the southern Uplands of Scotland (Tavarnelli et al, 2004); the central Myanmar basin (Khin et al, 2021); the central Iran microcontinent of SE Iran (Ebrahimi et al, 2021); the Zagros of Iran (Rahnamarad et al, 2008;Ghanbarian et al, 2021); and Alborz in northern Iran (Nabavi et al, 2017). According to our structural evidence of the Khousf folded platform, our proposed model is inclined transpression for each limb of the platform.…”

Section: Slip Partitioning and Transpression Deformationmentioning

confidence: 75%

Flexural-slip folding in buckling phases of orogenic belts: Insight into the tectonic evolution of fault splays in the East Iran orogen

et al. 2023

View full text Add to dashboard Cite

Introduction: The East Iran orogen has experienced multiple buckling phases resulting in the formation of strike-slip fault splays. The geometric and kinematic characteristics of these splays are influenced by folding mechanisms. This study focuses on investigating the structural characteristics and tectonic evolution model of the Khousf splay, located in the northern terminus of the Nehbandan right-lateral strike-slip fault system.Methods: Field visits and geometrical properties from map views were used to analyze the structural features of the Khousf splay. The splay was found to consist of a multi-plunging anticline and syncline, referred to as the Khousf anticline and Khousf syncline, respectively. Flexural slip was identified as a significant mechanism for the formation of these structures. Structural evidence, including parasitic folds, active folds, and strike-slip duplexes, suggested that flexural slip occurred on discrete movement horizons among the rock units.Results: Analysis of the parasitic folds in the cores and limbs of the Khousf anticline and syncline revealed M, W, Z, and S shapes, with complex slicken-line patterns observed on faults parallel to the beds at the limbs. The analysis results indicated strain partitioning and inclined left- and right-lateral transpressional zones. Shortening estimates obtained from profiles in the Shekarab inclined transpressional zone were approximately 33%, 65%, and 68% for NE-SW, N-S, and NW-SE profiles, respectively. In the Arc area, which is the core of the anticline, shortening estimates from NE-SW and N-S profiles ranged from 14% to 10%. Structural analysis of the folds in this area revealed broad, close, semi-elliptical, and parabolic shapes, suggesting that secondary folds with NW-SE axis directions have been superimposed on the first-generation folds with E-W axis directions in the Khousf refolded splay.Discussion: The findings of this study highlight the structural characteristics and tectonic evolution model of the Khousf splay in the northern terminus of the Nehbandan right-lateral strike-slip fault system. The results suggest that flexural slip played a crucial role in the formation of the multi-plunging anticline and syncline in the Khousf splay. The presence of parasitic folds and complex slicken-line patterns on faults indicate the complexity of deformation processes. The observed strain partitioning and inclined transpressional zones suggest a complex tectonic history in the study area. The superimposition of secondary folds with different axis directions on first-generation folds adds further complexity to the structural evolution of the Khousf refolded splay. Overall, this study provides new insights into the structural characteristics and tectonic evolution of the Khousf splay in the East Iran orogen.

show abstract

Understanding the Structure and Tectonic Configuration of Bengal Basin for Earthquake Magnitude Prediction

Karim

Shanker

2023

Lecture Notes in Civil Engineering

View full text Add to dashboard Cite

Dextral transpressional shearing and strike-slip partitioning developments in the Central Myanmar Basin during the collision between the India Plate and West Myanmar Block

Cited by 6 publications

References 82 publications

Structure and kinematics of active faulting in the northern domain of Western and Central Alborz, Iran and interpretation in terms of tectonic evolution of the region

Structure and kinematics of active faulting in the northern domain of Western and Central Alborz, Iran and interpretation in terms of tectonic evolution of the region

Flexural-slip folding in buckling phases of orogenic belts: Insight into the tectonic evolution of fault splays in the East Iran orogen

Understanding the Structure and Tectonic Configuration of Bengal Basin for Earthquake Magnitude Prediction

Contact Info

Product

Resources

About