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Chandrasekharam D.,King Saud University | Chandrasekharam D.,Indian Institute of Technology Bombay | Lashin A.,King Saud University | Lashin A.,Benha University | And 3 more authors.
Environmental Earth Sciences | Year: 2015

The current thermal regime around the red Sea was initiated by a mantle plume beneath Ethiopia, Eretria, Yemen and SW of Saudi Arabia at about 31 Ma before the present. The evolution of the geothermal systems around the Red Sea is coeval to the initial onset of volcanism over the separated land masses (Eritrea, Ethiopia, Djibouti, Yemen, Saudi Arabia and Egypt at 14 Ma. The entire tectono-magmatic activities around the Red Sea gave rise to several geothermal provinces over the continents surrounding the Red Sea, represented by thermal springs and fumaroles at several locations in Eretria, Djibouti, Ethiopia, Yemen and Saudi Arabia. These countries have the potential to develop these resources, like Ethiopia, to mitigate CO2 emissions in countries like Saudi Arabia and to enhance the GDP (gross domestic product) of the economically backward countries. The geothermal resources have the potential to make these countries energy independent in future. © 2014, Springer-Verlag Berlin Heidelberg. Source


Chandrasekhar V.,GeoSyndicate Power Pvt. Ltd. | Chandrasekharam D.,Indian Institute of Technology Bombay
Transactions - Geothermal Resources Council | Year: 2011

The Himalayan Geothermal Belt extends to a length of about 1500 km from the NW Himalayas to the north-eastern part of India and runs parallel to the Main Boundary Thrust. This belt hosts more than 100 thermal springs with issuing temperatures varying from 57 to 98°C The geothermal systems along the Himalayan Geothermal Belt (HGB) is controlled by the younger granite intrusives which span in age from 1 Ma to 21 Ma. These are the leucogranites that are generated within the crust due to shear heating coupled with radiogenic heat from the radioactive decay of U, Th and K. The chemical constituents in the thermal waters support the involvement of the leucogranites in controlling the circulation of the thermal fluids and also hosting the geothermal reservoirs. Source


Chandrasekharam D.,Indian Institute of Technology Bombay | Varun C.,GeoSyndicate Power Pvt. Ltd. | Garg G.,Indian Institute of Technology Bombay | Singh H.K.,Indian Institute of Technology Bombay | Trupti G.,Indian Institute of Technology Bombay
Transactions - Geothermal Resources Council | Year: 2014

Siwana Ring Complex falling within the Malani Igneous Suit in Rajasthan, India hosts large volumes of high heat generating granites with high concentration of radioactive elements and the heat generated by these plutons vary from 4 to 41 μw/m3. Thermal waters issuing through these granites are chloride rich due to long period of circulation within these granites. Such granites are potential candidates for future EGS projects in India and elsewhere. Copyright © (2014) by the Geothermal Resources Council. Source


Lashin A.,King Saud University | Lashin A.,Benha University | Chandrasekharam D.,Indian Institute of Technology Bombay | Chandrasekharam D.,King Saud University | And 3 more authors.
Journal of African Earth Sciences | Year: 2014

The entire western Arabian shield is the domain of both hydrothermal and enhanced geothermal systems associated with volcanic centres (Harrats) and high heat generating granites. The most prominent sites of hydrothermal systems are located around Al-Lith and Jizan. The hydrothermal system in Al Lith is controlled by high heat generating (~11μW/m3) post orogenic granites. The high heat flow value of >80mW/m2 across Al-Lith coast is due to such granite intrusives, presence of dike swarms that intrude into the granites as well as position of Moho at shallow level. Although the thermal waters are chloride rich, Red Sea involvement is not observed. Long residence time and water rock interaction with granites are the main processes responsible for chloride enrichment in the thermal waters. Oxygen isotope shift indicates presence of high temperature geothermal system in the area. The tritium values indicate that the circulating waters are >75years old. © 2014 Elsevier Ltd. Source


Chandrasekharam D.,Indian Institute of Technology Bombay | Chandrasekharam D.,King Saud University | Lashin A.,Benha University | Lashin A.,King Saud University | And 5 more authors.
Journal of African Earth Sciences | Year: 2015

Jizan geothermal province has evolved over an oceanic ridge slice which is under plated a thin continental crust. The area is characterized by high heat flow and high geothermal gradient and hosts several thermal and warm springs whose chemistry indicates a high temperature reservoir within the granites. The geophysical data indicated that the thermal fluids are fault controlled. The residence time of the fluids, estimated based on 14C, is about 33 kilo years. Oxygen isotope shift suggests that the reservoir temperature is around 220°C. It is estimated that the province can generate electricity of the order of 134×106kWh which can be effectively utilized to meet future fresh water demand and save CO2 emissions by decreasing the domestic oil and gas consumption. © 2015 Elsevier Ltd. Source

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