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Shu Zhang, Yong Zhang, Gang Huang, Bo Zhang, Yichan Li, Xin Chen, Junkang Xu and Yujie Wei
Granites, widely distributed in the Earth?s crust, undergo pedogenic processes, shaping diverse soil-mantled landscapes influenced by climatic factors in different regions. Investigating the geochemical signatures in granite weathering profiles across va...
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Tong Wu, Shang Shi, Minghao Ren, Jingwen Wang and Jinyu Dong
Long-term erosion of granite?a type of hard rock?by hydrothermal fluids and tectonic movement can lead to a fragmentation of the internal structure of the original rock, transfer/replacement of mineral elements, and alteration of the rock?s basic propert...
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Jorge E. Morales Leal,Andrew Menzies,Hans-G. Wilke,José Zuluaga
Pág. 185 - 207
The El Peñón low-sulfidation epithermal deposit, located in the Paleocene metallogenic belt in the Antofagasta region, northern Chile, consists of Au-Ag bearing veins and hydrothermal breccias hosted in volcanic rocks and surrounded by alteration haloes ...
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Zhigang Zeng, Zuxing Chen and Haiyan Qi
The in situ element concentrations and the sulfur (S), and lead (Pb) isotopic compositions in anglesite were investigated for samples from seafloor hydrothermal fields in the Okinawa Trough (OT), Western Pacific. The anglesite grains are of two kinds: (1...
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Yongwei Gong, Guohong Zhang, Yan Hao and Linmei Nie
Bioretention facilities with different inflow concentrations, growing media and plants were examined to determine whether the soil in these facilities was polluted with heavy metals and whether runoff had obvious toxic effects on plants. Using Beijing so...
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Jacinta García-Talegón, Adolfo Carlos Iñigo, Rosa Sepúlveda and Eduardo Azofra
After subjecting Zamora building stones to accelerated ageing tests, colour changes were studied, namely: (a) freezing/thawing and thermal shock (gelifraction and thermoclasty), and (b) combination of freezing/thawing plus thermal shock and salt crystall...
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Abdul Ghaffar Fazal, Muhammad Umar, Faisal Shah, Muhammad Armaghan Faisal Miraj, Hammad Tariq Janjuhah, George Kontakiotis and Abdul Khaliq Jan
The geochemical investigation of shales from the Early to Middle Cretaceous Chichali Formation in the Hazara Basin was conducted to determine the origin, tectonic setting and evolution, paleo-weathering conditions, and paleo-oceanographic reconstruction....
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Mayra A. Vargas-Escudero,Carlos A. Ríos-Reyes,Mario García-González,Adriana Ortiz-Orduz
Pág. 472 - 495
The exploration well ANH-CR-Montecarlo-1X, in the southern part of the Cesar-Ranchería basin in Colombia, cuts sedimentary rocks assigned to the Cogollo Group (Barremian-Cenomanian). The present study integrates petrographic techniques (thin section micr...
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Simone Vezzoni, Diego Pieruccioni, Yuri Galanti, Cristian Biagioni and Andrea Dini
The reconstruction of the polymetamorphic history of basement rocks in orogens is crucial for deciphering past geodynamic evolution. However, the current petrographic features are usually interpreted as the results of the metamorphic recrystallization of...
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Ibrahim M. Ahmed, Mohamed Jalludin and Moumtaz Razack
The hydrogeological system of the Goda Mountains Range (GMR) in the Republic of Djibouti (Horn of Africa), hosted by volcanic and sedimentary formations, is the only water resource in the Tadjourah region for more than 85,000 inhabitants. Water needs are...
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