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BDFGeotherm - a web database of geothermal fluids in Switzerland

BDFGeotherm – General information on Loetschberg

Site description
Country Switzerland
Canton/Province Bern
Use None
Geology
Surface formation Granite
Age of surface formation Hercynian
Reservoir formation Granite
Age of reservoir formation Hercynian
Geological setting Aar Massif
Loetschberg
Loetschberg
Loetschberg has 3 sampling points
and 3 geological logs are available (*)

S6015 (LOETS-S6015)
S83370 (LOETS-S8370)
S12320 (LOETS-S12320)
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Site: Loetschberg
Sampling point: S6015
Sample name: LOETS-S6015
Description
Samplig point type: Tunnel
X-coord: 621'300
Y-coord: 143'200
Elevation: 1200 masl
Depth: 800 m
Hydraulics
Flow rate: 0.01 l/s
Surface temperature: 19.3 °C
Max. measured temp.: no data
Hydraul. conduct.: no data
Exploitation mode: Free flow
Hydrochemistry
Sampling date: 14.07.1991
Geochemical type: Ca>Na-SO4>Cl
Temperature: 19.3 °C
Electrical conductivity: 2580 µS/cm
pH: 8.69
Cations (mg/l)
Li: 3.1
Na: 270
K: 1.14
Mg: 0.3
Ca: 396
Sr: 9.5
Anions (mg/l)
F: 4.2
Cl: 273
SO4: 1315
HCO3: 18
Undissociated (mg/l)
SiO2: 13.7
TDS: 2304 mg/l
Ionic balance: -5.01 %
Isotopes
Sampling date: 14.07.1991
δ18O: -16.10 ‰
D: -119.00 ‰
3H: 4.3 TU
14C: no data
Resid. time: 20-40 years/date
Infiltration area: no data
Geothermal parameters
Min. reservoir temp.: 20 °C
Max. reservoir temp.: 20 °C
Reservoir depth: no data
Geoth. gradient: no data
Geoth. potential: 1 kWth
Geological log
LOETS-S6015
LOETS-S6015
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