List of Articles Travertine

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  1 - Determination of Travertine Outcrop Types in Tazerj (Northern Hormozgan) using Mineralogical and Geochemical Data
  Jamal Tarrah Zahra Abedpour Seyed Mohammad Mirhosseini
  The Tazerj travertine deposits are located 25 km northwest of Haji Abad and 5 km northeast of Tazerj Village in Hormozgan Province, southern Iran. This area is part of the Folded Zagros Zone. The studied travertine deposits are located on Eocene deposits and were most l More

  The Tazerj travertine deposits are located 25 km northwest of Haji Abad and 5 km northeast of Tazerj Village in Hormozgan Province, southern Iran. This area is part of the Folded Zagros Zone. The studied travertine deposits are located on Eocene deposits and were most likely formed through the dissolution and re-deposition of groundwater and atmospheric waters onto the Asmari limestone. The petrographic evidence shows calcite to be the dominant mineral forming the microscopic sections of the Tazerj travertine deposits. The textural characteristics of the sediments confirm that microbial and biological activity was present at the time of deposition. XRD results confirm the existence of calcite-type calcium carbonate. In addition, XRF results confirm low levels of strontium and relatively high levels of magnesium. Finally, the geological evidence indicates that the rocks were created as a result of tectonic activity. The circulation of atmospheric deep water and its reappearance on the ground as hot springs through fractures and faults, formed meteogenic travertine deposits in Tazerj along large faults and fractures. The temperature of the hot springs responsible for creating the travertine deposits is estimated at approximately 30 °C. Manuscript profile
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  2 - The Study of geochemistry contamination of heavy metals in travertine deposits and soil in Gorveh- Takab Region, NW Iran
  ریحانه Roshanak فرید Moor بهنام Keshavarzi
  Biogeochemical cycle begins with rock, so geology and geochemistry of rock and soil erosion play the mostimportant role in the distribution and concentration of potentially toxic elements in each ecosystem. In this study,rock and soil samples from Gorveh, Bijar and Taka More

  Biogeochemical cycle begins with rock, so geology and geochemistry of rock and soil erosion play the mostimportant role in the distribution and concentration of potentially toxic elements in each ecosystem. In this study,rock and soil samples from Gorveh, Bijar and Takab cities were analyzed using ICP-MS instrumental method.Geochemical analyses indicate high amounts of heavy metals such as As, Ni, Cd, Se and Co in soil andtravertine samples, of which arsenic is prominent (>10000 ppm). XRD analysis revealed how heavy metals arepresent in the travertines of the area and by integrating mineralogical and geochemical results, the main reasonfor high concentration of As in these deposits was shown to be the presence of arsenic bearing minerals. Theenvironmental indices including enrichment factor, contamination factor, pollution load index, potentialecological risk index were calculated and indicated that the majority of the samples are categorized as highlycontaminated. Average arsenic concentration in rock and soil samples is 423 and 1089 (mg/kg) respectively. Themain reason for such high heavy metals contents -especially arsenic- in the area is believed to be the existence ofmany hot springs representing waning stages of volcanic activity. Manuscript profile
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  3 - Selection of suitable extraction method for Mahallat travertine mines using Analytical Hierarchy Process (AHP)
  Saeed Dehghan Ghasem Sattari Hamed Boustanzar Mohammad- Ali Aliabadi
  Nowadays various methods such as wire saw, chain saw and water jet can be used to extract dimensional stones.These methods have some advantages and disadvantages in respect to different criterion such as technical,economical, geological, and environmental and etc. There More

  Nowadays various methods such as wire saw, chain saw and water jet can be used to extract dimensional stones.These methods have some advantages and disadvantages in respect to different criterion such as technical,economical, geological, and environmental and etc. Therefore, choosing a suitable method in stone mineextraction to achieve more efficiency considering technical and environmental aspects is necessary. In this paperfor selection suitable extraction method for travertine mines in Mahallat, analytical Hierarchy Process (AHP) andExpert Choice software is used. For this purpose, eight criteria including geological aspect, environmentalaspect, extraction time, cost, safety, cutting quality, application facility and performance method and threeextraction alternative including wire saw, chain saw and water jet have been taken into account. Regarding toresults of AHP analyze the chainsaw method with priority of 0.471 is the best mining extraction method forquarry mines in Mahallat. The results show that replacement of chainsaw method instead of usual method (wiresaw) caused to improvement of technical, economical, geological and environmental conditions of travertinemines of Mahallat. Manuscript profile
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  4 - Estimating of uniaxial compressive strength by using point load index for travertine rock of Mahallat
  Saied Dehghan Ghasem Sattari
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