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<p>The primary objective of this study is to investigate the geological structures and mineralogical composition of the Maaziz basin in northern Morocco, which features Triassic sedimentary rocks overlying a Paleozoic basement. This research aims to contextualize the basin’s characteristics within the framework of other Triassic deposits in the region to enhance understanding of its geological evolution. The basin formed during the early stages of the Atlantic opening and was significantly influenced by late Triassic extensional tectonics that reactivated Hercynian faults, resulting in neofractures and graben structures. Evidence of synsedimentary tectonic activity is indicated by variations in sedimentary thickness and angular unconformities. Field observations, along with mineralogical and geochemical analyses, aid in reconstructing the depositional environment, with X-ray diffraction (XRD) identifying dominant minerals such as quartz, brushite, gypsum, and phyllosilicates, which reflect climatic transitions from semi-arid to arid conditions. Additionally, Scanning Electron Microscopy (SEM) and X-ray fluorescence (XRF) analyses reveal the impact of volcanic activity on sediment chemistry. The lithostratigraphic sequence illustrates the interplay between detrital sediments and evaporitic facies, shaped by aridity and contemporaneous volcanism. Overall, the findings provide a characterization of the Maaziz basin’s geological evolution, emphasizing the importance of understanding these processes within the context of regional geology.</p>

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Triassic sediments of the Maaziz basin: mineralogical, geochemical characterization with paleoenvironmental implications

  • 期刊论文

  • 发表日期：

    2026年3月4日

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  • Imane Kounti,
  • Mohammed Saadi,
  • Sahar El Kasmi,
  • Boubker Boukili,
  • Nacir EL Moutaouakkil,
  • Soukaina Mouljebouj,
  • Wiame El Moutchou

摘要

The primary objective of this study is to investigate the geological structures and mineralogical composition of the Maaziz basin in northern Morocco, which features Triassic sedimentary rocks overlying a Paleozoic basement. This research aims to contextualize the basin’s characteristics within the framework of other Triassic deposits in the region to enhance understanding of its geological evolution. The basin formed during the early stages of the Atlantic opening and was significantly influenced by late Triassic extensional tectonics that reactivated Hercynian faults, resulting in neofractures and graben structures. Evidence of synsedimentary tectonic activity is indicated by variations in sedimentary thickness and angular unconformities. Field observations, along with mineralogical and geochemical analyses, aid in reconstructing the depositional environment, with X-ray diffraction (XRD) identifying dominant minerals such as quartz, brushite, gypsum, and phyllosilicates, which reflect climatic transitions from semi-arid to arid conditions. Additionally, Scanning Electron Microscopy (SEM) and X-ray fluorescence (XRF) analyses reveal the impact of volcanic activity on sediment chemistry. The lithostratigraphic sequence illustrates the interplay between detrital sediments and evaporitic facies, shaped by aridity and contemporaneous volcanism. Overall, the findings provide a characterization of the Maaziz basin’s geological evolution, emphasizing the importance of understanding these processes within the context of regional geology.