Climate of the Past
Climate of the Past
CP
Articles | Volume 18, issue 7
Articles | Volume 18, issue 7
https://doi.org/10.5194/cp-18-1529-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-18-1529-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 7
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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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.
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