Articles | Volume 18, issue 7
https://doi.org/10.5194/cp-18-1529-2022
https://doi.org/10.5194/cp-18-1529-2022
Research article
 | 
05 Jul 2022
Research article |  | 05 Jul 2022

Development of longitudinal dunes under Pangaean atmospheric circulation

Hiroki Shozaki and Hitoshi Hasegawa

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Subject: Continental Surface Processes | Archive: Terrestrial Archives | Timescale: Pre-Cenozoic
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Cited articles

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Short summary
Atmospheric circulation in the supercontinent of Pangaea is thought to have been significantly different from today. We present the spatial distribution of palaeowind directions recorded in Lower Jurassic aeolian sandstones in the western US. This reveals the development of longitudinal dunes formed by a combination of westerly, northwesterly, and northeasterly palaeowinds. The reconstructed palaeowind pattern at ~19–27°N is consistent with the model-generated surface wind pattern in Pangaea.