NDLI: A comparison between karst development in two main zones of Iran: case study—Keyno anticline (Zagros Range) and Shotori anticline (Central Iran)

Content Provider	Springer Nature Link
Author	Chitsazan, Manouchehr Karimi Vardanjani, Hossein Karimi, Haji Charchi, Abbas
Copyright Year	2015
Abstract	This study focuses on the karstic groundwater of two main zones of Iran: Keyno anticline (Zagros Range) and Shotori Mountains (Central Iran). Mean annual precipitation of these areas is 1100 and 150 mm, respectively. The major carbonate rocks of Shotori Mountains consist of the Permian Jamal formation limestones, the middle Triassic Shotori formation dolomites, and middle to upper Jurassic Esfandiar formation grey limestones. Results of isotope analysis demonstrated that samples do not show serious evaporation effect and rain directly infiltrates into aquifers. By analyzing the hydrographs of karst springs, it is revealed that the contribution of quick flow is less than 33 % in all of them. Relatively stable discharge and electrical conductivity, low recession coefficients, and high base flow component imply a diffuse system in related aquifers. According to these studies, it seems that there is no developed karst system in Shotori Mountains, and some large voids observed in well logs can be attributed to the paleoclimate. Because of the complexity in structure and very low precipitation, the Shotori Mountains have many differences compared to other karstic area of Iran, such as the Zagros belt. Geomorphology studies show obvious differences between karstic features in this area and typical karstic area. There are not any advanced morphological karst features such as poljes and sinkholes and other typical features (rill karren, runnel karren, etc.) replace with vespiary features, microspitz karren, and similar features. Purity of limestone in Shotori Mountains is the same as Zagros, and then the main reason for morphological differences can be attributed to the lower precipitation in Shotori area. On the other hand, the main controlling factor in valley generation in this area is tectonic (faults and rejuvenation); therefore, there are no real karstic valleys.
Starting Page	10833
Ending Page	10844
Page Count	12
File Format	PDF
ISSN	18667511
Journal	Arabian Journal of Geosciences
Volume Number	8
Issue Number	12
e-ISSN	18667538
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-06-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Desert Karst features Time series Paleoclimate Dissolved fractured aquifers Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Environmental Science

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