Description and characterization of secondary salt minerals in the Chota Basin, Ecuador

This research studies the secondary sales in the Chota sedimentary basin and its classification taking into account the functional chemical concentrations. In this study area there are white salt like crusts are found in soils, walls of constructions, drainages, and outcrops. These structures are distributed throughout the stratigraphy of the area of interest. Therefore, as a first step, this research works on concepts such as the occurrence of sales, effects and the most common types of sales. In addition, to carry out the field work, recent studies of stratigraphic characterization of the material that makes up the study area are considered to develop the subsequent random sampling that corresponds to samples that are difficult to identify by hand. Therefore, the methodology for this mineralogical characterization is based on the analysis of mineral phases from X-ray diffraction (XRD) data, this analysis provides a mineralogical evaluation and a semi-quantitative analysis of the compounds taken in the field. Finally, the recognized sales were Sulfates, Carbonates, Borates and Nitrates, which is consistent with the literature, of these groups the most abundant is Sulfates with 37% and according to the stratigraphic arrangement the largest amount of white minerals are found in the Quaternary deposits. In addition, there are also Arsenates, Phosphates, Silicates, Oxides of Hydrates and Hydroxides detected with the X-ray diffraction technique.

• Glavni avtor: Zapata Paredes, Karen Melina (author)
• Format: bachelorThesis
• Jezik: eng
• Izdano: 2022
• Teme: Cuenca sedimentaria del Chota; Sales secundarias; Costras salinas; Cristales de sal; Ambientes áridos; Chota sedimentary basin; Secondary salts; Saline crusts; Salt crystallization; Arid environments
• Online dostop: http://repositorio.yachaytech.edu.ec/handle/123456789/546