List of Articles geophysics

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  1 - Integration of geological and geophysical studies in order to mineral exploration at the Zaveh mineralization area, NE Iran
  Azadeh Malekzadeh Shafaroudi Bahareh Boroziniat Mohammad Reza Haidarian Shahri
  10.30495/ijes.2021.685384
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  2 - Investigating the Pollution of Radioactive Elements Based on Airborn Radiometric Geophysical Measurements in Goljeh (Zanjan province)
  Iren Hosseini , Shahram Baikpour Afshar Ziazarifi
  The study area is located in the southeastern quarter of Hashtjin 1:100000 geological map in Zanjan province. The area is located in both Eastern Alborz and Central Iran geological settings and known as Gollejeh/ Gulluja region. A wide spectrum of extrusive and intrusiv More

  The study area is located in the southeastern quarter of Hashtjin 1:100000 geological map in Zanjan province. The area is located in both Eastern Alborz and Central Iran geological settings and known as Gollejeh/ Gulluja region. A wide spectrum of extrusive and intrusive igneous rocks as well as volcanoclastic sediments are exposed in the investigated area. Structural elements such as faults along with lithological heterogenities led to differential erosion and creation a various topography. The aim of the study is to measure the contamination of the radioactive elements of uranium, thorium and potassium in such geological setting. A total of 52107 samples were systematically gathered by airborn radiometric geophysical method. Statistical analysis and iso-concentrational mapping overlain on the satellite and geological map of the area show that the high concentration of these radioactive elements is generally associated with the igneous rocks such as granitic rocks distributed in the eastern part of the study area (e.g. Varmaziarabd village). The low concentrations of the U, Th and K could mainly be observed over volcanoclastic rocks in the middle parts of the study area (e.g. Habash and Tristan villages). Average concentration of the radioactive elements does not show a serious contamination in the area, while the maximum concentration of the thorium elements exceeds the standard of WHO.    Manuscript profile
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  3 - Evaluation of Electrical Resistivity Tomography and Electromagnetic with Very Low Frequency Method in Identifying Buried Karst in Shaho Rifts (The Case of Quri Qaleh Cave)
  Ronak Shokati Amjad maleki Farzad Shirzaditabar
  Karst and karst cavities are one of the most challenging subjects. Given that karst areas cover approximately 20% of the land area, Identifying and investigating the location of karst buried cavities can be useful in various usages such as tourism development, subsidenc More

  Karst and karst cavities are one of the most challenging subjects. Given that karst areas cover approximately 20% of the land area, Identifying and investigating the location of karst buried cavities can be useful in various usages such as tourism development, subsidence prevention and karst water resources. In the rifts of Shaho, located in Kermanshah province, karst landforms, including caves and buried cavities, are well stretched. The current study attempted to identify rapid and early karst cavities using an easy and low-cost method in geomorphological studies. To this end, in Shaho rifts (Quri Qaleh cave and its surroundings), two geophysical methods namely Electrical Resistivity Tomography (ERT) and Very Low Frequency Electromagnetism (VLF) were utilized and compared. Initially, by determining the location of the cave on the ground, the profile performing route was designed perpendicular to the cave route. Then, 5 profiles were performed by VLF and 4 profiles by ERT method. Four ERT profiles perpendicular to profiles 2, 4 and 5 of VLF were taken and finally the results of the two methods were compared. In addition to determining the exact location of the cave, the results of both methods revealed anomalies outside the cave. Other findings of the research include the possibility of rapidly achieving the results and the cheaper use of the VLF method compared to other identification methods. Manuscript profile