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Tectonic Development of Wadi Mi’ar Area, Sinai, Egypt: Implications of Low-Temperature Thermochronology Techniques

Article

Last updated: 24 Dec 2024

Subjects

-

Tags

Earth and environmental sciences.

Abstract

The basement rocks of Wadi Mi'ar, cropping out along the eastern flank of the Suez Rift, constitute part of the NE segment of the Neoproterozoic Arabian-Nubian Shield. The whole region is finally reshaped by the Suez Rift initiation during the Oligocene-Miocene. Low-temperature thermochronology techniques are capable of providing new insights into the tectonic development of the Suez Rift by reconstructing the uplifting response of its flanks. Therefore, we provide here thermochronological data for seven collected samples from the basement rocks of the Suez Rift's eastern flank at Wadi Mi'ar. Zircon fission-track technique yielded cooling ages of 339 ± 10 Ma and 334 ± 9 Ma. While the apatite fission-track dated samples yielded ages between 26 ± 5 Ma and 21 ± 4 Ma. These cooling ages and the time-temperature modelling revealed three possible cooling pulses that represent exhumation events which were initiated as a response to three tectonic events; (1) the Neoproterozoic post-accretion erosional event, (2) the Devonian-Carboniferous Hercynian tectonic event, and (3) the Oligocene-Miocene Suez Rift. Furthermore, the Suez Rift initiation was accompanied by more than 3 km of rift flanks uplift to exhume samples from depths equivalent to 110 ˚C (apatite fission-track partial annealing zone) in the studied region. While the northern portion of the flank is dominated by older thermochronologic ages and modest rift flanks elevations.

DOI

10.21608/ajbas.2023.218033.1160

Keywords

Arabian-Nubian Shield, Sinai fission-track, Egypt thermochronology, Fission-track, The Suez Rift

Authors

First Name

Sherif

Last Name

Mansour

MiddleName

-

Affiliation

Geology Department, Faculty of Science, Port Said University, Port Said 42522, Egypt

Email

sherif@sci.psu.edu.eg

City

Port Said

Orcid

0000-0002-3326-6433

Volume

4

Article Issue

4

Related Issue

43711

Issue Date

2023-10-01

Receive Date

2023-06-16

Publish Date

2023-10-01

Page Start

727

Page End

738

Online ISSN

2682-275X

Link

https://ajbas.journals.ekb.eg/article_306688.html

Detail API

https://ajbas.journals.ekb.eg/service?article_code=306688

Order

306,688

Type

Original Article

Type Code

947

Publication Type

Journal

Publication Title

Alfarama Journal of Basic & Applied Sciences

Publication Link

https://ajbas.journals.ekb.eg/

MainTitle

Tectonic Development of Wadi Mi’ar Area, Sinai, Egypt: Implications of Low-Temperature Thermochronology Techniques

Details

Type

Article

Created At

24 Dec 2024