The Polish Geological Society successfully held the 1st edition of the Core Logging School (COLOS) from September 15th to 18th in the Holy Cross Mountains, Poland. The primary goal of the school was to provide participants with both the theoretical foundation and practical skills in sedimentological borehole core logging. Borehole cores offer crucial insights into deposit-bearing successions, climate change, natural disasters, and even the origins of life, making this event highly appealing to geologists from diverse fields, including geosciences, mining, and environmental science.

Twenty two participants at various stages of their professional careers, attended the school. The 1stCOLOS programme combined lectures on methods, case study applications, and practical exercises. Theory sessions were held at the European Centre for Geological Education in Chęciny, while the two-day practical component took place at the Central Core Depository in Chmielnik.

Participants worked on two siliciclastic formations: fine-grained the Ludlow Kociewie Formation from the East European Platform and the Miocene Machów Formation from the Carpathian Foredeep. These strata, deposited as shelf-margin deltas and submarine fans, exhibit significant sedimentological variations, providing excellent material for practical logging exercises and discussions.