Bulletin of the Geological Society of Finland 2021:2

Bulletin of the Geological Society of Finland 2021:2 includes articles among others: Pentti Hölttä, Irmeli Mänttäri, Hannu Huhma, Matti Kurhila, Tapio Ruotoistenmäki and Asko Kontinen, Growth of the Archean sialic crust as revealed by zircon in the TTGs in eastern Finland; Raul Mollehuara-Canales, Nikita Afonin, Elena Kozlovskaya, Juha Lunkka and Daniele Pedretti, Leveraging active-source seismic data in mining tailings: Refraction and MASW analysis, elastic parameters, and hydrogeological conditions; Jukka-Pekka Ranta, Nick Cook and Sabine Gilbricht, SEM-based automated mineralogy (SEM-AM) and unsupervised machine learning studying the textural setting and elemental association of gold in the Rajapalot Au-Co area, northern Finland.