| Title | Volcanology and Geothermal Research by Using Hydrothermal Alteration Processes of Well NWS-4 at Sabalan Volcano Geothermal Project, Iran |
|---|---|
| Authors | Zahed Mousavi, Ali Darvishzadeh |
| Year | 2010 |
| Conference | World Geothermal Congress |
| Keywords | Geothermal, Alteration minerals, Mt. Sabalan, Meshkin shahr, Iran |
| Abstract | The Mt. Sabalan Hypabbusal basement batholiths with monzogranite compenent have been replaced inside of Eocene volcanic rocks during Miocene-Pliocene. Due to this replacement other suitable geological and hydrological conditions, a geothermal reservoir has been formed around Mt. Sabalan. Based on resistivity surveys combined with other geological & geochemical data, the area at N-W Sabalan located 20 km to south of Meshkin shahr was selected for geothermal exploration drilling. The well NWS-4 is one of the three exploration wells in this area. The result of studies show that an alteration system at NWS-4 has neutral pH & alteration zones consist of average argillic, phyllic & propylitic. In addition, by correlating extent temperature stability of alteration minerals for approximate well thermometry, the alteration temperature can be estimated to be 240 °C. |