Fig. 11
From: 120 years of georesources research in Switzerland: the Swiss Geotechnical Commission (1899–2018)
Main SGTK research focus areas derived from the topics of the Geotechnical Series monographs from 1899 to 2012. Vertical axis: % of the total amount of reports. Note (1) the clear focus on hydrocarbons in the first three decades, (2) the shift in the 1930s towards ore deposits, (3) the hydrocarbons interlude in the 1940s and 50s, (4) the increasing diversification from the 1970s onwards and (5) the fast decline of number of reports since the 1980s