Time constraints on the deposition of a mineralisation-proximal metavolcaniclastic rock at Byngsbodberget, northwest of Falun, Bergslagen, Sweden

A metavolcaniclastic rock at Byngsbodberget, northwest of Falun in Bergslagen, Sweden, has been dated to approximately 1900 ± 9 million years using U-Pb SIMS zircon analysis. This age is interpreted as representing the main volcanic event that contributed material to the studied rock, providing a key time constraint for the local volcanic stratigraphy. The study utilized way-up indicators to determine the position of the rock within the volcanic sequence, suggesting it marks the lower parts of the local stratigraphy. This research contributes crucial data to understanding the stratigraphic framework of mineralization-proximal metavolcanic rocks in the region, which host numerous historic mines and mineralizations.

Lewerentz, A., Ripa, M., & Morris, G. (2021). Time constraints on the deposition of a mineralisation-proximal metavolcaniclastic rock at Byngsbodberget, northwest of Falun, Bergslagen, Sweden. Gff, 143(4), 321–327. https://doi.org/10.1080/11035897.2021.1896573