The drilling operations at Gebestorf-Brüel (AG) are almost finished. Here a few impressions of the last few cores (consolidated material, thus not targeted by my sampling for noble-gas analysis).
At present we are installing an on-line gas monitoring system at an hydrothermal well in the city of Beppu (Oita Prefecture, Japan), along the Japan Median Tectonic Line. This project is performed within the frame of a scientific collaboration between the Institute of Geological Sciences of the University of Bern, the Swiss Federal Institute of Aquatic Science and Technology (Eawag) (Dr. Kipfer), the Atmosphere and Ocean Research Institute (AORI) of The University of Tokyo (Dr. Sano), and the Institute for Geothermal Sciences of Kyoto University (Dr. Shibata).
The monitoring aims to provide a comprehensive dataset to infer any possible relation between gas geochemistry and seismic activity in the surrounding region. The measurements will last until the end of May 2018.
The Quaternary drilling in Riniken started on March 5th, 2018. This is the first borehole of a series that will be performed by Nagra in other regions of Switzerland.
We collected samples for noble-gas analysis in the sediment pore water within the frame of a pilot project aiming to assess the performance of the He-U/Th dating method. A few impressions of the fieldwork can be found below.