Inspecting geothermal prospects in an integrated approach within the West Azarbaijan Province of Iran

Ebrahimi, Davar; Nouraliee, Javad; Dashti, Ali

doi:10.1016/j.geothermics.2018.09.007

Cited by 7 publications

(6 citation statements)

References 32 publications

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“…A growth rate of 3000 MW renewable energy per year is planned to guarantee the supply a part of electrical energy demands (Najafi and Ghobadian 2011). Geologic data and published researches on the geothermal susceptibility of Iran confirmed the existence of economic geothermals throughout this country (Amoatey et al 2021;Ebrahimi et al 2019b;Yousefi et al 2010;Yousefi et al 2007). Therefore, the geologic background of Iran is promising that this land has enough potential to yield considerable amounts of geothermal energy.…”

Section: Discussionmentioning

confidence: 97%

Study of geothermal energy potential as a green source of energy with a look at energy consumption in Iran

Dashti

Korzani

2021

Geotherm Energy

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Regarding disadvantages of fossil fuels, renewables like geothermals can be an eco-friendly source of energy. In Iran, the availability of fossil fuels and poor policies surrounding subsidies (ranked as the first in giving subsidies) caused high energy consumption (1.75 times higher than the global average). Energy is mainly provided by fossil fuels that leads to high CO2 emission. This study evaluates the energy consumption trend and potentials of more sustainable resources like geothermals in Iran. The formation of geothermals is tightly linked with geological prerequisites that are partly present within Iran. Adjacency of the metamorphic with volcanic zones, existence of numerous faults and seismic activity of Iran are notable geological characteristics confirming the geothermal potential. In Iran, 18 regions are being explored as the most promising geothermal prospects. To test the potentials of one of these regions, a geothermal power plant with a capacity of 5 MWe is installed in the Sabalan Field. Northwest (where Sabalan Field is located), central (like Mahalat Region) and southeast of Iran (Makran Zone) can be regarded as promising zones for hosting geothermal prospects.

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Section: Discussionmentioning

confidence: 97%

Study of geothermal energy potential as a green source of energy with a look at energy consumption in Iran

Dashti

Korzani

2021

Geotherm Energy

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“…Mahallat is also another possible geothermal site located in the Markazi Province of Iran. Three negative gravity anomaly zones and faults (acting as preferential pathways for hydrothermal fluids circulation) are confirmed in this area [21][22][23][24][25][26][27][28][29] . Published documents mainly presented all interpretations on the Mahalat geothermal region merely based on the geophysical data.…”

mentioning

confidence: 88%

“…Installation of the first Iranian geothermal power plant at the Sabalan Field (northwest of Iran) is the result of some country-wide exploration projects. In addition, further detailed geothermal exploration studies have been carried out in different parts of Iran [17][18][19][20][21][22][23][24][25]26 .Mahallat is also another possible geothermal site located in the Markazi Province of Iran. Three negative gravity anomaly zones and faults (acting as preferential pathways for hydrothermal fluids circulation) are confirmed in this area [21][22][23][24][25][26][27][28][29] .…”

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confidence: 99%

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Appraising Mahallat Geothermal Region using thermal surveying data accompanied by the geological, geochemical and gravity analyses

Nouraliee

Ebrahimi

Dashti

et al. 2021

Sci Rep

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Mahallat Geothermal Region, located in the central part of Iran, is known as one of the largest low-temperature geothermal fields. In this study, Mahallat geothermal resource has been evaluated based on integrated geological, geochemical and geophysical analyses. Gravity data revealed three major negative anomaly zones. Based on the geochemical analyses, quartz geothermometers are more reliable than others and confirmed that the reservoir is about 90 °C. Lithological properties of Jurassic layers and high sulphate content observed in geochemical data showed traces of the coal-rich layers on the hot fluids. Measured temperatures in 7 boreholes with the depths ranging from 50 to 100 m, have proposed that expected geothermal gradient will be about 81.5 °C/km. Among all drilled boreholes, the data coming from only one resulted in this almost reliable gradient. Other boreholes are clearly too shallow or affected by upflow or downflow of water along existing faults. Geological, geochemical, gravity and measurements of drilled boreholes suggested the existence of a shallow reservoir with an approximate temperature of 90 °C. Regarding gravity and observed faults, geothermal reservoir is elongated parallel to one of the main faults of the region with NE-SW strike.

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“…The study area is known for its geothermal potential (Yousefi et al, 2010), being part of the Hmadean -Tabriz volcanic belt with active volcanism located nearby. According to Afshar et al (2017) and Ebrahimi et al (2019) Mohammadi et al (2019) that different substrate controls different aspects of travertine characteristics and consequently water chemistry. This means that, based on integration of hydrochemical and geological data it is possible to deduce the hydrothermal reservoir, its depth and temperature in addition to information on fluid flow path, fluid mixing and fluid-rock interaction.…”

Section: Reservoir Type Temperature and Depthmentioning

confidence: 99%

Hydrogeochemistry, stable isotope composition and geothermometry of CO2-bearing hydrothermal springs from Western Iran: Evidence for their origin, evolution and spatio-temporal variations

Mohammadi

Vaselli

Muchez

et al. 2020

Sedimentary Geology

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This study aims to hydrochemically characterise three CO2-bearing springs representing distinct hydrofacies in NW Gorveh (western Iran) and interpret them in the light of their geological setting. The results of laboratory measurements of elemental concentrations, stable oxygen, carbon and hydrogen isotopes, dissolved and particulate organic and inorganic carbon (DIC, DOC, POC, PIC) and alkalinity are combined with in situ measurements of pH and temperature. Parameters such as alkalinity, DIC, Ca 2+ and pCO2 concentration display a strong, positively correlated values, with systematic decrease from the spring vent in down-flow direction for the three spring systems. The inverse correlation of pH and δ 13 CDIC is caused by CO2 degassing. The δ 18 O and δD values show no significant variation, related to minor or no evaporation due to normal ambient temperatures. The low concentration of POC and PIC and DOC compared to that of DIC and the lack of correlation between them reflects predominant inorganic carbon in these fluids.Spring I is oversaturated in calcite with additional dissolution of CO2, and despite high concentrations of Na + and Cl -, undersaturated in halite, indicating a fluid of geothermal origin and/or reflecting steady state dissolution. This is related to water-rock interaction processes with carbonate and evaporitic rocks, 2 that affected the isotopic signature of δ 18 O, which is shifted to the right of the global meteoric water line. Spring I also represents a partially equilibrated and mature (deep) chloride type water. Spring Ⅱ and Ⅲ are less saline and represent a different fluid circulation and/or reflecting shorter residence time.The two latter springs are characterised by peripheral (shallow) dilute chloride-bicarbonate type waters.Decreasing key parameters especially in Spring Ⅲ during the winter suggest that superficial mixing with rain and meteoric water results in high temporal variations. Cation and stable carbon isotope geothermometry applied to the studied springs reveal an average reservoir temperature of ~210, 110 and 90 °C for Spring I and II and III, respectively. The geochemical and isotopic data allowed to depict a conceptual model where the hydrothermal reservoir for Spring I is residing in carbonate and evaporitic rocks (most likely the Qom Formation) situated at a depth of 3-4 km whereas those of Spring Ⅱ and Ⅲare likely sourced from a shallower depth (1-2 km) in correspondence with carbonate and porous and permeable volcanic rocks.Integration of hydrofacies with conceptual hydrological and geological models forms the base towards a proper understanding of water circulation patterns, increasingly important for sustainable water management and geothermal applications.insights into fluid-rock interaction processes, origin of waters, reservoir depth and temperature (e.g. Giggenbach and Glover, 1992). Considerable research has been devoted to address the elemental composition and isotope characteristics of hydrothermal waters and related inorganic carbonate deposits (e.g.

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Inspecting geothermal prospects in an integrated approach within the West Azarbaijan Province of Iran

Cited by 7 publications

References 32 publications

Study of geothermal energy potential as a green source of energy with a look at energy consumption in Iran

Study of geothermal energy potential as a green source of energy with a look at energy consumption in Iran

Appraising Mahallat Geothermal Region using thermal surveying data accompanied by the geological, geochemical and gravity analyses

Hydrogeochemistry, stable isotope composition and geothermometry of CO2-bearing hydrothermal springs from Western Iran: Evidence for their origin, evolution and spatio-temporal variations

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