Characterisics of hydrogen and oxygen isotopes of deep ground water  in the Panxie mining area in Huainan Coalfield

GE Tao; CHU tingting; LIU Guijian; FAN Xiang; WU Dun

doi:10.3969/j.issn.0253-2778.2014.02.006

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Characterisics of hydrogen and oxygen isotopes of deep ground water in the Panxie mining area in Huainan Coalfield

School of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China) Abstract: 34 water samples (i.e, rainfall, surface water, groundwater from the Taiyuan Formation limestone aquifer, the Ordovician limestone aquifer and the Cambrian limestone aquifer) were collected from the Panxie mining area of Huainan Coalfield,and TDS (total dissolved solids), hydrogen and oxygen isotopes (δD and δ8O) were determined. Different evaporation slopes and deuterium excesses of individual aquifers indicate that there are different evaporation rates and residence times among them. The Taiyuan Formation limestone aquifer has a stronger hydraulic connection with the surface water compared with the Ordovician limestone aquifer. Isotope composition of the limestone water is associated with mixing between shallow recharge groundwater and a contribution including mineralized fluids from the deep aquifer. The primary factor responsible for δD and δ8O excursion may be attributed to water-rock interaction in the limestone aquifer. Key words: hydrogen isotope

Cite this:

https://doi.org/10.3969/j.issn.0253-2778.2014.02.006

Received Date: 15 July 2013
Rev Recd Date: 08 October 2013
Publish Date: 28 February 2014

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Abstract

Abstract

34 water samples (i.e, rainfall, surface water, groundwater from the Taiyuan Formation limestone aquifer, the Ordovician limestone aquifer and the Cambrian limestone aquifer) were collected from the Panxie mining area of Huainan Coalfield,and TDS (total dissolved solids), hydrogen and oxygen isotopes (δD and δ8O) were determined. Different evaporation slopes and deuterium excesses of individual aquifers indicate that there are different evaporation rates and residence times among them. The Taiyuan Formation limestone aquifer has a stronger hydraulic connection with the surface water compared with the Ordovician limestone aquifer. Isotope composition of the limestone water is associated with mixing between shallow recharge groundwater and a contribution including mineralized fluids from the deep aquifer. The primary factor responsible for δD and δ8O excursion may be attributed to water-rock interaction in the limestone aquifer.

Abstract

34 water samples (i.e, rainfall, surface water, groundwater from the Taiyuan Formation limestone aquifer, the Ordovician limestone aquifer and the Cambrian limestone aquifer) were collected from the Panxie mining area of Huainan Coalfield,and TDS (total dissolved solids), hydrogen and oxygen isotopes (δD and δ8O) were determined. Different evaporation slopes and deuterium excesses of individual aquifers indicate that there are different evaporation rates and residence times among them. The Taiyuan Formation limestone aquifer has a stronger hydraulic connection with the surface water compared with the Ordovician limestone aquifer. Isotope composition of the limestone water is associated with mixing between shallow recharge groundwater and a contribution including mineralized fluids from the deep aquifer. The primary factor responsible for δD and δ8O excursion may be attributed to water-rock interaction in the limestone aquifer.