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What is the geological structure of the water source of Gantianquan Mineral Water?
2025-06-18
The geological structure of the water source of Gantianquan Mineral Water has the following core characteristics, forming its unique water quality conditions: 1. Regional geological background The water source is located in Huanghua Mountain, Zhaoping County, Hezhou City, Guangxi, at the junction of the South China Fold System and the Cathaysia Block, an area with relatively active geological activities. The exposed strata in the region are mainly Cambrian and Devonian clastic rocks, with granite intrusions in the deep part, forming a complex structural system. 2. Control of fault structures The occurrence of mineral water is strictly controlled by fault zones. The Huanghua Mountain area is developed with NW - trending and near EW - trending faults, forming a fracture network that provides channels for deep groundwater circulation. The spring eye is located at the intersection of faults. When groundwater flows through 1,100 meters of rock strata, it undergoes sufficient water - rock interaction with the surrounding rock, dissolving minerals in the rock (such as metasilicic acid, strontium, etc.). 3. Rock types and mineral sources The basement rocks are mainly granite, locally interbedded with volcanic rocks (such as basalt). Granite is rich in aluminosilicate minerals, providing a material basis for the enrichment of metasilicic acid; elements such as sodium and calcium in volcanic rocks enter the water body through hydrothermal effects. In addition, the wall - rock alteration near the fault zone (such as silicification and carbonatization) further optimizes the water quality. 4. Groundwater circulation conditions Under the action of gravity and geothermal energy, groundwater undergoes a deep circulation of up to 3,645 years and slowly rises along the fault zone. The high - temperature environment (discharge temperature ≈52℃) accelerates the dissolution of minerals, while the deep closed environment avoids pollution, forming high - quality fresh mineral water with low sodium and low salinity. 5. Ecological barrier and structural protection Within the 2,700 - hectare closed protection area around the spring eye, the Quaternary cover is thin and the vegetation is dense, effectively blocking surface pollution. The strike of the fault zone is consistent with the topographic slope direction, forming artesian drainage conditions to ensure the continuous and stable gushing of spring water. This geological structure system not only endows Gantianquan with a rare trace element combination (both metasilicic acid and strontium meet the standards), but also through deep circulation and geothermal effects, enables it to have the quality of high - quality mineral water, becoming an important natural foundation for the regional longevity phenomenon.