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Journal Article

Contour marks as potential indicators of evaporation rates in the early Permian continental vertebrate site Bromacker (Thuringia, Central Germany)


Pint,  Anna
External Organizations;

Hildebrandt,  Anke
External Organizations;


Landwehrs,  Jan Philip
Potsdam Institute for Climate Impact Research;


Feulner,  Georg
Potsdam Institute for Climate Impact Research;

Scholze,  Frank
External Organizations;

Nyakatura,  John
External Organizations;

Ispas,  Leon
External Organizations;

Grützner,  Christoph
External Organizations;

Frenzel,  Peter
External Organizations;

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Pint, A., Hildebrandt, A., Landwehrs, J. P., Feulner, G., Scholze, F., Nyakatura, J., Ispas, L., Grützner, C., Frenzel, P. (2023): Contour marks as potential indicators of evaporation rates in the early Permian continental vertebrate site Bromacker (Thuringia, Central Germany). - Palaeogeography, Palaeoclimatology, Palaeoecology, 628, 111749.

Cite as: https://publications.pik-potsdam.de/pubman/item/item_28660
Reconstructing the climate of the past requires archives that bear proxy information on temperature, precipitation, or atmospheric composition, for example. In this study we use contour marks as potential water level marks in mud sediments to reconstruct local evaporation rates at the Bromacker lagerstaette site in the Early Permian. The measured values indicate a daily evaporation of 1.5–3.75 mm with a median value of 2.25 mm/day. The calculated evaporation rates are compared with modern ones to estimating moisture, precipitation and seasonal climate. For evaluating reconstructed precipitation and evapotranspiration rates, values simulated by global climate models and calculated from geochemical datasets are furthermore incorporated. For the first time, quantitative data and models elucidate the climate of the Tambach Formation and Bromacker lagerstaette against the background of the pivotal transition from the Carboniferous Ice House to the Permian Hothouse climate. Our results suggest a strongly seasonal climate with wet summers and dry winters in a mountainous region based on unexpectedly low temperatures (10.9–15.0 °C) considering the palaeo-location of the site in the tropical belt during the Early Permian. According to the modern vegetation model by Holdridge a moist forest biome is suggested for the Bromacker lagerstaette.