The Børglum fault was active in historical times. Comment on ‘The near-surface structure in the area of the Børglum fault, Sorgenfrei-Tornquist Zone, northern Denmark: Implications for fault kinematics, timing of fault activity and fault control on tunnel valley formation’ by Brandes et al. [Quat. Sci. Rev. 289 (2022) 107619]

Abstract

Brandes et al. (2022) provided a detailed study of the Børglum fault, a branch of the Sorgenfrei-Torquist Zone, in northern Denmark, based on seismic profiles, borehole, and outcrop data. They suggest that the last fault displacement occurred between 14.5ka and 12ka. We wish to highlight the widespread deformed churches in the region: their damage was caused by seismic activity in historical times (13–16th century). Displacement along the Børglum fault, therefore, did not cease before the Holocene but rather has been active at least up to the 16th century.