Tectonics and kinematics of an Alpine shear zone near As Sifah (NE Oman)

Al Harthy S, Bauer W, Handoniaina JAN, Al Maawali H, Wischer J, Tamas DM (2022)

Publication Type: Journal article

Publication year: 2022


Book Volume: 15

Journal Issue: 7

DOI: 10.1007/s12517-022-09887-6


The Saih Hatat Dome forms a tectonic window under the overlying allochthonous Samail ophiolite and nappes composed of sediments from the Neotethyan Hawasina Basin. In this window, high- to ultra-high pressure/low-temperature eclogites and blueschists of the so-called lower plate are tectonically overlain by metamorphic rocks, forming the so-called upper plate. In 2018, the footwall of the discontinuity became exposed in a 650-m-long and up to 37-m-deep road cut which gave an insight to structural elements in these highly sheared blueschists. Kinematic indicators point to a top-to-north simple shear movement along low-angle discrete shear zones of decimeter to meter thickness, alternating with low-strain zones that are occupied by folded competent rocks. Fold axes are aligned parallel to the mineral stretching lineations and were formed by simple shear-related shortening of a steep limb of a pre-existing N-S oriented syncline. The structural inventory of the outcrop can be interpreted as the result of the Late Cretaceous exhumation of the NE corner of the Arabian Plate.

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Al Harthy, S., Bauer, W., Handoniaina, J.A.N., Al Maawali, H., Wischer, J., & Tamas, D.M. (2022). Tectonics and kinematics of an Alpine shear zone near As Sifah (NE Oman). Arabian Journal of Geosciences, 15(7). https://dx.doi.org/10.1007/s12517-022-09887-6


Al Harthy, Salima, et al. "Tectonics and kinematics of an Alpine shear zone near As Sifah (NE Oman)." Arabian Journal of Geosciences 15.7 (2022).

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