Macholdt-HimaPetroglyphs-Suppl-2019_v8.2 – Supplemental material for Rock varnish on petroglyphs from the Hima region, southwestern Saudi Arabia: Chemical composition, growth rates, and tentative ages

Supplemental material, Macholdt-HimaPetroglyphs-Suppl-2019_v8.2 for Rock varnish on petroglyphs from the Hima region, southwestern Saudi Arabia: Chemical composition, growth rates, and tentative ages by Dorothea S Macholdt, Klaus Peter Jochum, Abdullah Al-Amri and Meinrat O Andreae in The Holocene