Tectonic controls on Late Cretaceous sedimentation on the southern Tethyan passive margin, Tunisia: new evidence of structural segmentation and early basin inversion

Bachari, Mabrouk; Belkhiria, Wajdi; Negra, Mohamed Hédi; Groshény, Danièle; Soltani, Akrem

doi:10.1080/00206814.2023.2243498

Cited by 3 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The NW-SE and NE-SW major faults and fractures are responsible for the metallurgic mechanism and the rise of deep water during water/rock contact, as well as having equally important roles in the rechargeability of surface-and shallow-water reservoirs by rainwater (Figure 2c). The geological, geomorphological and tectonic evolution of the rocks forming the major tectonic units of the study area can be traced back some 500 million years to when they were located on different continents (Gondwana and Laurasia) [19].…”

Section: Geological and Tectonic Settingmentioning

confidence: 99%

Environmental Radioactivity, Ecotoxicology (238U, 232Th and 40K) and Potentially Toxic Elements in Water and Sediments from North Africa Dams

Hamed,

Ayadi,

Hadji

et al. 2024

Sustainability

View full text Add to dashboard Cite

The natural radioactivity of 238U, 232Th and 40K was measured in water and sediment samples collected from Sidi Salem dam (Tunisia) and Aïn Dalia dam (Algeria) in the Tuniso-Algerian transboundary basin. The samples were measured using a TERRA detector of gamma, beta, and alpha rays, and atomic absorption and gamma-ray spectrometry were used to analyze the levels of radionuclides and toxic elements, respectively. Potentially toxic elements (Fe, Pb, Zn, Ni, Cr, Cu and Cd) and associated health risks in surface water and sediment of dams were investigated in this present study. The concentrations of Fe, Pb, Zn, Ni, Cr, Cu and Cd in surface water ranged from 5.430 to 9.700 mg·L−1, 0.022 to 0.168, 0.018 to 0.142, 0.065 to 0.366, BDL to 0.0351, BDL to 0.071 and BDL to 0.048 mg·L−1, respectively. In the sediments, the concentrations of Fe, Pb, Zn, Cu, Ni, Cd and Cr were of the order of 136.7, 3.41, 3.22, 0.213, 0.182, 0.15 mg·L−1 and BDL, respectively. The mean radioactivity rates in the water samples were 1.72, 0.068 and 94.6 Bq·L−1 for 238U, 232Th and 40K, respectively (Tunisia dam), and were 1.9, 0.09 and 131.43 Bq·L−1 for 238U, 232Th and 40K, respectively (Algeria dam). The mean 238U, 232Th and 40K radioactivity concentrations measured in the sediment samples were 2.67, 0.18 and 197.87 Bq·kg−1, respectively (Tunisian dam), and were 4.34, 0.27 and 287.61 Bq·kg−1, respectively (Algeria dam). The activity concentration of 40K was higher than that of 238U and 232Th for the water and sediment samples. The activity concentrations follow the order 40K > 238U > 232Th. The cumulative impact of these radio-geochemical elements can cause immediate serious problems in the ecosystem due to their high potential toxicity to the environment and human health in this study area and can be transposable to any other similar region. A good knowledge of monitoring quality and quantity for transboundary water resources and international collaborations are essential to safeguard human health (women’s breast cancer, thyroid cancer, neurological impact) and avoid conflicts, especially during climatic upheavals of drought.

show abstract

Section: Geological and Tectonic Settingmentioning

confidence: 99%

Environmental Radioactivity, Ecotoxicology (238U, 232Th and 40K) and Potentially Toxic Elements in Water and Sediments from North Africa Dams

Hamed,

Ayadi,

Hadji

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

Traversing the rift: A review of the evolution of the West and Central African Rift System and its economic potential

Lenhardt,

Omietimi,

Edegbai

et al. 2025

Earth-Science Reviews

View full text Add to dashboard Cite

Environmental Radioactivity, Ecotoxicology (Uranium-238, Thorium-232 and Potassium-40) and Toxic Heavy Metals Contents in Water and Sediments from North Africa Dams. Tuniso-Algerian Transboundary Southern Mediterranean Basin

Hamed,

Ayadi,

Hadji

et al. 2023

Preprint

View full text Add to dashboard Cite

Natural radioactivity of 238U, 232Th and 40K for liquid and solid samples collected from Sidi Salem dam (Tunisia) and Aïn Dalia dam (Algeria) were measured using TERRA detector of rays (gam-ma, beta, and alpha), Atomic adsorption and Gamma-ray spectrometry were used to analyze the levels of radionuclides and toxic heavy metals, respectively. Toxic heavy metals (Fe, Bb, Zn, Ni, Cu, Cr and Cd) and associated health risks in surface water and sediment of dams have been in-vestigated in this present study. The radioactivity mean rates in the water samples were 1.72±0.01, 0.068±0.01 and 94.6±1.04 Bql-1 for 238U, 232Th and 40K respectively (Tunisia dam) and were 1.9± 0.24, 0.09±0.01 and 131.43±1.03 Bql-1 for 238U, 232Th and 40K respectively (Algeria dam). The 238U, 232Th and 40K radioactivity mean concentration measured in the sediment samples were 2.67±0.01, 0.18±0.012 and 197.87±2.01 Bqkg-1 respectively (Tunisian dam) and were 4.34±0.05, 0.27±0.05 and 287.61±3.34 Bqkg-1 respectively (Algeria dam). The activity concentration of 40K was higher than that of 238U and 232Th for the water and sediment samples. The mean activity concen-trations follow the order 40K > 238U > 232Th. The cumulative impact can be a serious immediate radiological health burden on the ecosystem, environment and people's health in this study area and can be transposable to any other similar region. The good knowledge of monitoring quality and quantity for the transboundary water resources and the international collaborations are es-sential to safeguard human health (women’s breasts cancer, thyroid cancer, neurological im-pact…), and avoid the conflicts, especially during these climatic upheavals of drought.

show abstract

Tectonic controls on Late Cretaceous sedimentation on the southern Tethyan passive margin, Tunisia: new evidence of structural segmentation and early basin inversion

Cited by 3 publications

References 35 publications

Environmental Radioactivity, Ecotoxicology (238U, 232Th and 40K) and Potentially Toxic Elements in Water and Sediments from North Africa Dams

Environmental Radioactivity, Ecotoxicology (238U, 232Th and 40K) and Potentially Toxic Elements in Water and Sediments from North Africa Dams

Traversing the rift: A review of the evolution of the West and Central African Rift System and its economic potential

Environmental Radioactivity, Ecotoxicology (Uranium-238, Thorium-232 and Potassium-40) and Toxic Heavy Metals Contents in Water and Sediments from North Africa Dams. Tuniso-Algerian Transboundary Southern Mediterranean Basin

Contact Info

Product

Resources

About