Assessment of Chaves Low-Temperature CO2-Rich Geothermal System (N-Portugal) Using an Interdisciplinary Geosciences Approach
Table 2
Reservoir temperatures (°C) of Chaves low-temperature CO2-rich geothermal waters and of Vilarelho da Raia, Vidago, and Pedras Salgadas cold CO2-rich mineral waters, estimated from chemical geothermometers. Adapted from [29, 60].
Local
Ref.
Chalc. (1)
Quartz (2)
Na-K-Ca (3)
Na-K-Ca (Mg) (4)
Na/K (5)
Na/Li (6)
K2/Mg (7)
V. da Raia
Facha
70
100
146•
124
101
116
103
Chaves
AC1
90
120
203+
118
188
178
120
AC2
91
121
210+
132
204
193
125
Spr. 3
92
121
206+
121
191
178
123
Vidago
AC16
72
102
126•
96
176
211
93
AC18
74
104
177•
89
171
188
111
P. Salgadas
AC17
92
121
106•
92
127
177
80
Notes: (1) Fournier and Truesdell (1974) - in [54]; (2) [56] - cooling by conduction; (3) [57]; (4) [58]; (5) White and Ellis (1970) - in [56]; (6) [59]; and (7) [63]. Borehole water; spring waters; +; •.
