This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Diagrams of varve correlations from de Geers geochronology of the last years. en Diagrams of varve correlations figure from article De Geer geochronology of the last years Congrs Gologique International session geochronology of the last years Congrs Gologique International session springer page De Geer geochronology