EurekaMag.com logo
+ Translate

Geochemical signature of the Kizildere geothermal field, western Anatolia, Turkey


, : Geochemical signature of the Kizildere geothermal field, western Anatolia, Turkey. International Geology Review 44(2): 153-163

The Kizildere thermal waters are located in the northern part of the Buyuk Menderes rift zone. The Paleozoic metamorphic rocks from the basement of the studied area and are discordantly overlain by Pliocene clastic sediments. The thermal waters are associated with NE-SW- and NW-SE-oriented faults, representing a compressional event that followed extensional formation of the rift zone. The hydrothermal alteration includes phyllic, argillic, silicic, hematitized, and carbonatized alteration zones. Precambrian to Cambrian metamorphic and Pliocene sedimentary rocks are distinguished from one another by enrichment patterns for Hg, Sb, As, Tl, Ag, and Au, and depletion patterns for alkaline and alkaline-earth elements in connection with degree of hydrothermal alteration. The thermal waters have surface temperatures of up to 100 degrees C and reservoir temperatures from 148 to 198 degrees C in the Sazak formation and from 200 to 212 degrees C in the Igdecik formation. Hydrogeochemically, Kizildere thermal waters are of the Na-HCO (sub 3) -(SO (sub 4) ) type. Metalloids of As and Sb and some trace elements (e.g., B and F, indicating high-temperature water-rock interaction), are found in high concentrations. Isotopic data reveal that Kizildere thermal waters do not contain measurable (super 3) H. Conversely, some nearby thermal springs with temperatures of up to 88 degrees C contain atmospheric and anthropogenic (super 3) H (up to 6.5 TU). Therefore, there is evidence for a mixing process between the fresh groundwater and deep thermal water. The Kizildere thermal waters are of meteoric origin. Stable isotope values of delta D and delta (super 18) O show that the mixed groundwater-thermal water systems lie along the meteoric water line, whereas high-temperature, deep groundwater systems deviate from the meteoric water line in showing a water-rock interaction at high-temperature conditions. These data agree well with the results of hydrogeochemical analyses indicating intensive water-rock interaction and reactions with silicates. Due to the deep circulation, the water is heated by recent subvolcanic activity. Overprinting by reactions with crystalline rocks was intensified by outgassing of magmatic CO (sub 2) and H (sub 2) S, proven by isotope analyses of delta (super 13) C, delta (super 34) S, and delta (super 11) B. Although intense geochemical near-surface reactions occur, the geochemical features of high-temperature, water-rock interaction dominate the chemical and isotopic characteristics of the studied waters.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 018450364

DOI: 10.2747/0020-6814.44.2.153

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Westgren M.; Stangenberg M.; Selbing A., 1989: Feto placental blood volume in severely anemic erythroblastotic fetuses. The feto-placental blood volume was studied using a hemoglobin hemodilution technique in 15 erythroblastotic fetuses at 43 intravascular transfusions. Four severely anemic fetuses (Hb 30 g/l) had significantly larger blood volumes than 11 moderate...

Acil, Y.; Vetter, U.; Brenner, R.; Behrens, P.; Mueller, P. K.; Brinckmann, J., 1995: Ehlers-Danlos syndrome type VI Collagen cross-link pattern in urine, bone and cartilage. Calcified Tissue International 56(5): 446

Dillon Jeremy S.; Sorenson Curtis J., 2007: Relict cryopedogenic features in soils with secondary carbonate horizons, western Wyoming, USA. We document relict cryopedogenic features in strongly developed calcic horizons on a flight of fluvial terraces in a mid-latitude, intermontane basin in western Wyoming, USA. The calcic horizons show many distinctive cryopedogenic features includi...

Causse J.B., 1989: The twenty fine points of otosclerosis surgery. American Journal of Otology 10(1): 75-77

Hoeppll R.; Gunders, A. E., 1962: A comparison of akin changes caused by onchocerciasis and aging. Forty-five Africans with Onchocerca volvulus infection and 10 non-infected controls were examined for histological changes in the skin. Both series included young people and persons of advanced age. The following was found In noninfected subjects,...

Raggueneau J L.; Levante A.; Lienhart A.; Chollet A.; Thurel C., 1980: The technique of anesthesia for the prevention and treatment of gaseous embolism in the neuro surgical sitting position. The sitting position in neurosurgery always gives 3 problems for the anesthetist: in maintaining the cerebral perfusion pressure, not aggravating intracranial hypertension and detecting gaseous embolism. The clinical signs of air embolism often lo...

Meyers, R., 1992: The twelve who survive; strengthening programmes of early childhood development in the Third World. Of every 13 children born in 1991, statistical evidence predicted that 12 would survive (92%). Against this background, the book argues that increased attention to a child's creative and coping potential and to social and emotional well-being...

Fridolf T.; Ahren B., 1991: Glp 17 36amide stimulated insulin secretion in rat islets is sodium dependent. We examined the Na+-dependency of the effects of GLP-1(7-36) amide in normal, overnight cultured rat islets. It was found that GLP-1(7-36) amide stimulated insulin secretion, 45Ca2+-efflux, and 86Rb+-efflux from prelabelled islets. All these effec...

Heckert Andrew B.; Lucas Spencer G.; Hunt Adrian P., 2005: Triassic vertebrate fossils in Arizona. The Triassic System in Arizona has yielded numerous world-class fossil specimens, including numerous type specimens. The oldest Triassic vertebrates from Arizona are footprints and (largely) temnospondyl bones from the Nonesian (Early Triassic: Sp...

Weber M.A.; Neutel J.M.; Cheung D.G., 1989: Hypertension in the aged a pathophysiologic basis for treatment. American Journal of Cardiology 63(16): 25H-32H