Research Article

Hydrogeochemical Characteristics and Geothermometry Applications of Thermal Waters in Coastal Xinzhou and Shenzao Geothermal Fields, Guangdong, China

Table 6

Fresh water and seawater percentages in thermal waters from Xinzhou and Shenzao geothermal fields.

LabelNameTypeBased on δ18OBased on δ2H

(%)

(%)

(%)

(%)

In Xinzhou geothermal field
 XH01New holeTD71.52%28.48%79.79%20.21%
 XH02DunTD72.85%27.15%78.40%21.60%
 XH03TaTD71.85%28.15%77.95%22.05%
 XH04JiaTD80.13%19.87%80.24%19.76%
 XH05DongweiTD80.79%19.21%87.58%12.42%
 XH08XitingTD89.07%10.93%82.49%17.51%
 XC01ShanbianAW100.00%0.00%100.00%0.00%
In Shenzao geothermal field
 SH01ShenanTD63.91%36.09%57.16%42.84%
 SH02ShenzhongTD58.94%41.06%55.67%44.33%
 SH03ShenliTD63.25%36.75%59.05%40.95%
 SH04ShenhaiTD64.24%35.76%60.04%39.96%
 SC02ZhenhaiSW0.00%100.00%0.00%100.00%

Samples SC02 (seawater) and XC01 (cold fresh water) accepted as the end members of the mixing. TD, thermal drill; AW, agricultural well; RF, rainfall; SW, seawater; , the fraction of fresh water; , the fraction of seawater.