AUTHOR=Molén Mats O. TITLE=Comment to: Detecting upland glaciation in Earth’s pre-pleistocene record JOURNAL=Frontiers in Earth Science VOLUME=11 YEAR=2023 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2023.1120975 DOI=10.3389/feart.2023.1120975 ISSN=2296-6463