Academic Journal
Large compositional differences in the gases released from the Kizildag ophiolitic body (Turkey): Evidences of prevailingly abiogenic origin
| العنوان: | Large compositional differences in the gases released from the Kizildag ophiolitic body (Turkey): Evidences of prevailingly abiogenic origin |
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| المؤلفون: | D'Alessandro, Walter, Yüce, Galip, Italiano, Francesco, Bellomo, Sergio, Gülbay, Ahmet H., Yasin, Didem U., Gagliano, Antonina Lisa |
| المساهمون: | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia, Hacettepe University, Department of Geological Engineering, Hydrogeology Division, Beytepe, 06800 Ankara, Turkey, Eskisehir Osmangazi University, Department of Geological Engineering, Meselik, 26480 Eskisehir, Turkey |
| سنة النشر: | 2018 |
| المجموعة: | Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
| مصطلحات موضوعية: | Gas geochemistry, Serpentinization, Hydrogen, Abiogenic methane, Stable isotopes, 04. Solid Earth |
| الوصف: | We investigated the geochemical features of the gases released from the Kizildag ophiolitic complex (Hatay, Turkey). Twenty-three samples both dissolved in hyperalkaline waters and free gases (bubbling gases and dry seeps) were collected. Samples were analysed for their chemical (He, H2, O2, N2, CH4 and CO2) and isotopic (He, d13C-CH4, d2H-CH4, d2H-H2) composition including the content and C-isotopic composition of C2 to C5 alkanes in free gases. Analytical results evidence H2 production through low temperature (<80 C) serpentinization processes and subsequent abiogenic CH4 production through Fischer-Tropsch-type reactions. In some sample small additions of methane either of microbial or of thermogenic origin can be hypothesized. At one of the sites (Kisecik) a clear fractionation pattern due to microbial methane oxidation leading to strongly enriched isotopic values (d13C þ15‰ and d2H 68‰) and depletion in methane concentrations has been evidenced. At the dry gas seep of Kurtbagi methane flux measurements have been made and a preliminary output estimation of about 1000 kg per year has been obtained. ; Published ; 174-184 ; 7T. Variazioni delle caratteristiche crostali e precursori sismici ; JCR Journal |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | Marine and petroleum geology; /89 (2018); http://www.sciencedirect.com/science/article/pii/S0264817216304469?via%3Dihub |
| DOI: | 10.1016/j.marpetgeo.2016.12.017 |
| الاتاحة: | https://www.earth-prints.org/handle/2122/10622 http://www.sciencedirect.com/science/article/pii/S0264817216304469?via%3Dihub https://doi.org/10.1016/j.marpetgeo.2016.12.017 |
| Rights: | CC0 1.0 Universal ; http://creativecommons.org/publicdomain/zero/1.0/ |
| رقم الانضمام: | edsbas.7EA7067F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.marpetgeo.2016.12.017 |
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