Study of hydro-chemical characteristics and genesis in Kashi Reach of Kizil River Basin in Xinjiang
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Abstract:
Based on analyzing water chemistry data of 17 river water samples, the hydro-chemical characteristics and genesis in Kashi reach of Kizil River were studied by the means of Piper trilinear nomograph, principal component analysis and factor analysis. The results showed that the differences of hydrochemical types between the upstream and the middle or lower reaches reflected that the weathering dissolution of evaporates was the dominant influencing factor of the hydrochemical compositions of the river water, while the high quantity of SO42- in river originated from the weathering dissolution of the gypsum salt series in neogene stratigraphic. The evaporites weathering was dominated by gypsum salt weathering, while rock salt weathering took the second place, carbonate weathering contributed less, and the last was albite weathering.
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