Procedia Earth and Planetary Science最新文献_第3页

What is the Real ΔGr Function of Albite Dissolution? 钠长岩溶蚀的真实ΔGr功能是什么

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/j.proeps.2016.12.035

C. Gruber , I. Kutuzov , Y. Zakon , J. Ganor

{"title":"What is the Real ΔGr Function of Albite Dissolution?","authors":"C. Gruber , I. Kutuzov , Y. Zakon , J. Ganor","doi":"10.1016/j.proeps.2016.12.035","DOIUrl":"10.1016/j.proeps.2016.12.035","url":null,"abstract":"<div>One of the most significant environmental variables that affect albite dissolution rate is deviation from equilibrium (ΔGr). Most of the studies that describe the effect of ΔGr on albite dissolution rate were conducted under alkline pH (8.8-9.2), elvetad temperatures (80-300 °C) and for Amelia Courthouse (USA) albite. Comparison of the f(ΔGr) derived from those studies to the only f(ΔGr) from low temperature (25 °C), circum neutral pH and EVJE (Norway) albite leads to different ΔGr functions. Yet, except for the study of1, rate laws for silicate minerals dissolution, which are based on experiments conducted under ambient conditions, are lacking. Here we present new experimental results of single point batch experiments (SPBE) of albite dissolution in a isotopically spiked solution. The novel method that use Si isotopes2 enables detecting rates that otherwise can’t be detected under ambient conditions. Albite dissolution rates were determined under neutral-acidic pH, temperatures of 3.6, 25 and 50 °C, and a wide range of undersaturation conditions. The dependency of the dissolution rate on deviation from equilibrium (f(ΔGr)) was in agreement with the prediction of previous studies. However, the value of ΔGcrit was found to be significantly different, suggesting an effect of extrinsic properties of the environment.</div>","PeriodicalId":101039,"journal":{"name":"Procedia Earth and Planetary Science","volume":"17 ","pages":"Pages 148-152"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proeps.2016.12.035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91369300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Hydrogeological, Hydrogeochemical and Isotope Geochemical Features of Geothermal Waters in Tekkehamam and Environs, Western Anatolia, Turkey 土耳其西安纳托利亚Tekkehamam及周边地区地热水水文地质、水文地球化学及同位素地球化学特征

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/j.proeps.2016.12.057

Elif Ece Yılmaz, Nevzat Özgür

{"title":"Hydrogeological, Hydrogeochemical and Isotope Geochemical Features of Geothermal Waters in Tekkehamam and Environs, Western Anatolia, Turkey","authors":"Elif Ece Yılmaz, Nevzat Özgür","doi":"10.1016/j.proeps.2016.12.057","DOIUrl":"https://doi.org/10.1016/j.proeps.2016.12.057","url":null,"abstract":"<div>From Early to Middle Miocene, the continental rift zones of the Büyük Menderes, the Küçük Menderes and the Gediz were formed by extensional tectonic features, which generally strike E-W and are represented by a great number of geothermal waters, epithermal Hg, Sb and Au mineralizations, and volcanic rocks of Middle Miocene to recent age. The geothermal waters and epithermal mineralizations are related to faults, which strike preferentially NW-SE and NE-SW and are located transversely to the general strike of the rift zones. These faults are probably generated by compressional tectonic stress, which leads to the deformation of uplift between two extensional rift zones. One of these continental rift zones is the rıft zone of the Büyük Menderes which is ascribed to a great number of geothermal waters such as those issuing in very important locations of Kızıldere, Tekkehamam, Salavatlı, Germencik and others with a geothermal capacity of 860 MWe in the next future. The geothermal waters of Tekkehamam and surroundings are identified to belong to the Na+K>Ca>Na and HCO3>SO4>CI facies. According to the Cl-SO4-HCO3 diagram the geothermal waters might be heated by a magmatic source due to the high content of sulfate and boron in geothermal waters. Geochemical thermometers were applied to the collected samples in the region. According to the Na-K-Mg diagram (1), part of the geothermal waters can be considered as equilibrated geothermal waters. According to the results of geochemical thermometers, the reservoir temperatures of geothermal waters range from 160 to 250°C. The δ2H values of geothermal waters are between -61.9 to -51.8, while δ18O values range from -9.23 to -5.84. The tritium contents of geothermal waters are between 0.7 to 3.3 TU. These results show that there is no mixing with cold groundwaters.</div>","PeriodicalId":101039,"journal":{"name":"Procedia Earth and Planetary Science","volume":"17 ","pages":"Pages 177-180"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proeps.2016.12.057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138421583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Springs of Gandll K’in Gwaayaay (Hot Spring Island) Gwaii Haanas National Park Reserve ☆ 瓜伊哈纳斯国家公园保护区(Gwaii Haanas National Park Reserve)

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2017.01.032

S. Grasby, P. Bartier

引用次数: 0

Brief History of Natural Mineral Water Characterization by Laboratório de Análises of Instituto Superior Técnico - Portugal 葡萄牙高级tacimicnico研究所的Laboratório de Análises描述天然矿泉水的简史

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2017.01.035

Susel Caetano, Bárbara Alfaiate, Georgina Sarmento, M. Dias, M. Baião, F. Macieira, Ricardo Santos, S. Monteiro, M. C. Vaz, C. Rocha

引用次数: 1

Episodic microbial methanogenesis, methane oxidation and sulfate reduction in deep granite fractures at Forsmark, Sweden 瑞典Forsmark深部花岗岩裂缝中间歇性微生物产甲烷、甲烷氧化和硫酸盐还原

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.158

H. Drake, C. Heim, M. Whitehouse, C. Broman, M. Åström

引用次数: 6

Geological and Geophysical Perspective of Supercritical Geothermal Energy in Subduction Zone, Northeast Japan 日本东北部俯冲带超临界地热能的地质和地球物理远景☆

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/j.proeps.2016.12.066

Noriyoshi Tsuchiya , Ryoichi Yamada

引用次数: 6

North-eastern Morocco: A high Geothermal Prospect☆ 摩洛哥东北部:地热资源丰富

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2017.01.003

A. Correia, A. Rimi, Y. Zarhloule, J. Carneiro

引用次数: 6

Glacial Meltwater and Moraine Interaction: Evolution of Near-surface Waters at Kangerlussuaq, Western Greenland☆ 冰川融水和冰碛相互作用:格陵兰岛西部Kangerlussuaq近地表水域的演变[j]

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2017.01.027

I. Puigdomenech, E. Tullborg, A. Kontula, Tiina Lamminmäki

引用次数: 0

Influence of Spatial Heterogeneity and Hydrological Perturbations on Redox Dynamics: A Column Study 空间异质性和水文扰动对氧化还原动力学的影响:一个柱状研究

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2017.01.046

B. Arora, B. Mohanty

引用次数: 4

Reactive Transport Modeling of Arsenic Mobilization in Groundwater of the Red River Floodplain, Vietnam 越南红河漫滩地下水中砷动员的反应输运模型

Procedia Earth and Planetary Science Pub Date : 2017-01-01 DOI: 10.1016/j.proeps.2016.12.003

Dieke Postma , Pham Thi Kim Trang , Helle Ugilt Sø , Vi Mai Lan , Rasmus Jakobsen

引用次数: 5