Inicio  /  Andean Geology  /  Vol: 26 Núm: 1 Par: PP (1999)  /  Artículo
ARTÍCULO
TITULO

Geochemical characteristics and evolution paths of the superficial brines in the Llamara Salar (Chile).

Pedro L. Lopez    
Luis F. Auque    
Ingrid Garces    
Guillermo Chong    

Resumen

The geochemical evolution of the superficial brines in the 'Salar de Llamara' saline system is studied in this paper. Systematic sampling of saline solutions and sediments has pointed out the continuous equilibrium state of brines with respect to calcite and gypsum along the evaporative path. The high evaporation rate causes a progressive increasing in the concentration of brines, up to ionic strengths near 6 molal. From the mineralogical analysis of solid saline samples and the physicochemical treatment of solutions, a process of glauberite precipitation has been identified during the final stages. The formation of glauberite is associated with the partíal simultaneous dissolution of the previously precipitated gypsum. The thermodynamic viability of this process has also been confirmed through the theoretical simulation of the evaporation process performed with the geochemical code PHRQPITZ.

 Artículos similares

       
 
Deyang Zhao, Xiaocheng Zhou, Yongxian Zhang, Miao He, Jiao Tian, Junfeng Shen, Ying Li, Guilan Qiu, Fang Du, Xiaoming Zhang, Yao Yang, Jun Zeng, Xuelian Rui, Feng Liao and Zhijun Guan    
Studying the hydrogeochemical characteristics of hot springs provides essential geochemical information for monitoring earthquake precursors and understanding the relationship between fluids, fractures, and earthquakes. This paper investigates the hydrog... ver más
Revista: Water

 
Nazeer Asmael, Alain Dupuy, Paul McLachlan and Michel Franceschi    
The complex and interconnected water challenges linked to global climate change and natural and anthropogenic water resources pressure have become major challenges in the 21st century. The Garonne River and its accompanying alluvial aquifers are consider... ver más
Revista: Water

 
Abongile Xaza, Harold Wilson Tumwitike Mapoma, Tamiru A. Abiye, Sumaya Clarke and Thokozani Kanyerere    
The Heuningnes Catchment in the Republic of South Africa was used as a case study in this research to describe the application of saltwater fraction/quantification and hydrogeochemistry methods to evaluate the extent of saline intrusion in the coastal aq... ver más
Revista: Water

 
Gokulan Ravindiran, Sivarethinamohan Rajamanickam, Sujatha Sivarethinamohan, Balamurugan Karupaiya Sathaiah, Gobinath Ravindran, Senthil Kumar Muniasamy and Gasim Hayder    
Most water systems that support ecosystems and feed humans are depleted or stressed. Aquifer characteristics, topography, subsurface activities, climate, and geochemical processes regulate groundwater availability, a reliable source of fresh water. Globa... ver más
Revista: Water

 
Haya M. Alogayell, Eman Mohamed M. EL-Bana and Mohamed Abdelfattah    
The present work focuses on a comprehensive hydrochemical assessment of groundwater within a shallow aquifer located in the central region of Saudi Arabia. This aquifer serves as the principal source of groundwater supply for agricultural irrigation purp... ver más
Revista: Water