Field Trips 2023

Field Trip March

Tracer-Test Field Trip

Wednesday, March 29
24/7 measurements in boreholes on levels 3,4,5 and 6. The 8 conductivity tools which Roman Zorn has prepared an which measure the conductivity continuously, work very well. We measure in parallel at other locations with WTW of Piewak , George (TSU) and Roman Zorn.
The Weather is horrible.

Tuesday, March 28
24/7 measurements in boreholes on levels 3,4,5 and 6.

Monday, March 27
Injection of water… it took several hours to get the water into the borehole Spartak.

Sunday, March 26
After arrival of more loggers we installed them in the tunnels LG 4D and LG 4G and one on Tunnel 5 and one in Tunnel 6.
In the morning Zaza broke something at the car on the road to the damtop. We stirred the salt soup.
In the late afternoon Birgit left for Tbilisi. But we had an extra stop in Zugdidi because of the car. Finally the car was changed an Jura has brought us to Tbilisi where we arrived at ca. 10 in the evening.
In the afternoon it was getting warmer which improved the salt dissolution.

Saturday, March 25
Filling the tank with water and salt… cooking the salt soup.  100 kg of NaCl have been put into the big blue barrel.
In the afternoon Roman arrived with the conductivity sensors. Hurrah.
The eastern road to the warehouse is blocked by a landslide.


Friday, March 24
In the morning we opened Spartak well in really misty weather conditions. In the drillhole a lot of stones are stuck that had been falling from the top. We tried whether the well still takes water, which it did. 10 l of water disappeared in less than 3 min. Thus we decided to use it still for the tracer test because the well has nearly 300 m depth.
We measured the water levels in 4 other wells (Damtop N , Damtop S, Platform E, Platform W).

The team of Koba Gogoxia from Engurhesi provided the Spartak well with a tank. They promised to fill it the next day in order that we can dissolve 100 kg of NaCL in it.
In the afternoon we installed the conductivity loggers of TSU in Tunnel 3/1 in the access tunnel (close to Rummel well) and 3/2 locations in the dam (close to Shumov new drillings).

Thursday, March 23
We marked the potential locations of tracer test measurements in level 3 and 4. Tornike from TSU on the balcony of level 3.

On level 3 we met the drilling team of Alexey Shumov who drilled cores to identify the properties of the concrete in this section of the dam.

Wednesday, March 22
We selected measurement points for conductivity measurements in horizons 5 and 6 (the lower levels). On the photo you see Alexander (GTU) and Thomas leaving the tunnel and being back to daylight.
In the evening we successfully installed Wellcad on the computer of Tornike. After some basic explanations we tried on his own and did really well.

Tuesday, March 21
Arrival at Enguri in early evening. Warm welcome by the ladies.

Geological Field Trip

Tuesday, March 28
Return to Germany

Monday, March 27
We helped Thomas Röckel with his measurements in the tunnels of the Enguri dam.

Sunday, March 26
Dennis and Konstantin wanted to do a hike which should cross 2-3 fault zones on the right side of the dam but the weather and a guard dog didn’t play along so unfortunately we had to return after 2h with no measurements.

Saturday, March 25
With Thomas Röckel we visited the part behind the dam again and measured slicken slides.
Also in late morning we said goodbye to Onise and his team who left to Tbilisi.

Friday, March 24
We walked the road behind the dam on the east side of the reservoir where we tried to find indicators for the bigger fault zone. After that we drove down the road to Mestia again and visited the area of the old quarry. There we tried to map the Cretaceous – Jurassic contact in the east further inland and drove the road further to the north and found interesting veins in middle Jurassic.

Demur, Dennis and Konstantin at hard work at a the middle Jurassic outcrop

Thursday, March 23
We did a boat trip on the reservoir and investigated the fault zone from water, some of us climbed out of the boat to take measurements. We visited the western side of the fault zone, the Cretaceous – Jurassic contact and the eastern side of the fault zone.

Pictures of the fault zone in the west


Dennis as our proud skipper

Picture of the contact zone in the west, notice the brecciated part in the Cretaceous on the left

Wednesday, March 22
First we went to the Olori valley and – unfortunately – we found nothing but cemented springs. After that we drove along the road to Mestia east of the reservoir to further search the area for outcrops.

Konstantin taking measurements of a possible fault plane

Tuesday, March 21
During wet and cloudy weather we hiked on the southeastern side of the Enguri dam again searching for clues of the bigger fault system. We found some minor fault systems in shales of Oligocene age and later the contact between Cretaceous and Paleocene. So we assume that we hiked in the zone of the bigger fault.

Shale outcrop with Dennis as scale

From left to right: Konstantin, Onise, Demur and Alexandre search for outcrops by drone

View to the north in the possible fault zone which we climbed up

Monday, March 20
Unfortunately heavy rain so we stayed in the Hotel.

Sunday, March 19
We (Dr. Onise Enukidze, Dr. Alexandre Razmadze and Demur Merkviladze from TSU and Dr. Dennis Quandt and Konstantin Kuhn from KIT) searched for indicators of the bigger fault on the western side of the reservoir at the contact of Cretaceous and upper Jurassic. The weather was sunny but a bit windy. Since the water level is very low we could find clues much lower than the expedition in July 2022.

Saturday, March 18
Arrival in the early evening at Enguri Hotel and a warm welcome by Onise from TSU and his team.

 The thrust fault of the outcrop which we visited again by boat on March 23rd. View direction is to the north.