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Journal of Mountain Science

, Volume 10, Issue 5, pp 734–742 | Cite as

Origin of sulfur and mode of gypsum formation in central Iraqi soils

  • Sabar Rahi Jasem Aljeboory
  • Ahmad Muhaimeed
  • MohammadHady FarpoorEmail author
  • K. A. Saliem
Article
  • 143 Downloads

Abstract

The δ18O and δD values of gypsum crystallization water together with δ18O and δ34S of sulfates were used as reliable techniques to study source of sulfur and mode of gypsum formation in selected central Iraqi soils. Six representative pedons on different geologic units were studied. The slope of 3.2 for δ18O and δD plot of gypsum crystallization water showed that evaporation was the major process of gypsum deposition in the study area. The mean δ34S value of +17.58 ‰ showed that Cretaceous sea sulfate followed by Tertiary is the source of sulfur in studied soils. The heavier δ34S value (+17.58 ‰) of the study area compared to central Iran (+13.5 ‰) proved that gypsum in central Iraq soils has been formed in the later stage of evaporation and that Iraqi landforms were cut off from the Tethys seaway after central Iran was evolved.

Keywords

Sulfur geochemistry Gypsum crystallization water Tethys Sea Iraq 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Sabar Rahi Jasem Aljeboory
    • 1
  • Ahmad Muhaimeed
    • 1
  • MohammadHady Farpoor
    • 2
    Email author
  • K. A. Saliem
    • 3
  1. 1.Soil Science Department, College of AgricultureUniversity of BaghdadBaghdadIraq
  2. 2.Soil Science Department, College of AgricultureShahid Bahonar University of KermanKermanIran
  3. 3.Ministry of AgricultureBaghdadIraq

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