Geo-Investigations on the Qarat Kibrit Salt Dome Faulting System South of Adam, Oman—In Search of Anomalies Favorable for Uranium and Associated Minerals

Sundararajan Narasimman*, Ebrahimy Alaeddin, Bernhard Pracejus, Talal Al-Hosni

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The development of salt domes, often arising from depths of some 10 km or more, causes intense faulting of the surrounding host rocks (salt tectonics). The fractured rocks then present ideal space for oil that can migrate and get trapped. If such moving of hydrocarbons passes uranium-carrying rock units (e.g., shales), uranium is collected and enriched by organic carbon compounds. Brines from the salt body is also ideal carriers for oxidized uranium species and will further dislocate uranium when in contact with uranium-enriched oils. Uranium then has the potential to mineralize in the vicinity of the dome (blue halite is evidence for radiation having affected salt deposits). Based on this, the Qarat Kibrit salt dome was investigated by very low-frequency electromagnetic (VLF-EM) and magnetic surveys along five traverses approximately 250 m in length (10 m intervals) in order to identify subsurface fault systems. In-phase and quadrature components of the VLF-EM signal were recorded at two transmitter frequencies (24.0 and 24.9 kHz) along with the total magnetic field. The Karous-Hjelt current density pseudo section delineates the subsurface faults at depths between 10 and 40 m which is substantiated by the Hartley spectral depth from the total magnetic field. The stacked profiles of the line joining the Fraser peaks have brought out two plausible trends/directions of faults. Furthermore, the in situ XRF measurements that were carried out in the field are unable to establish any possible uranium enrichment within the salt-tectonic system, and there seems to be no evidence for an enrichment of uranium.

Original languageEnglish
Title of host publicationAdvances in Geophysics, Tectonics and Petroleum Geosciences - Proceedings of the 2nd Springer Conference of the Arabian Journal of Geosciences CAJG-2, Tunisia 2019
EditorsMustapha Meghraoui, Narasimman Sundararajan, Santanu Banerjee, Klaus-G. Hinzen, Mehdi Eshagh, François Roure, Helder I. Chaminé, Said Maouche, André Michard
PublisherSpringer Nature
Pages349-352
Number of pages4
ISBN (Print)9783030730253
DOIs
Publication statusPublished - 2022
Event2nd Springer Conference of the Arabian Journal of Geosciences, CAJG-2 2019 - Sousse, Tunisia
Duration: Nov 25 2019Nov 28 2019

Publication series

NameAdvances in Science, Technology and Innovation
ISSN (Print)2522-8714
ISSN (Electronic)2522-8722

Conference

Conference2nd Springer Conference of the Arabian Journal of Geosciences, CAJG-2 2019
Country/TerritoryTunisia
CitySousse
Period11/25/1911/28/19

Keywords

  • Fault
  • Salt tectonics
  • Total magnetic field
  • Uranium
  • Very low-frequency electromagnetic signals

ASJC Scopus subject areas

  • Architecture
  • Renewable Energy, Sustainability and the Environment
  • Environmental Chemistry

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