Did you know that sand records its transport history as it moves across Earth's surface? We developed a new tool to investigate billion-year-old rocks by looking at microscopic features on zircon sand grains. Check out our new paper in @geosociety.bsky.social to see how!

doi.org/10.1130/G537...

I also like to use some of their examples from previous underwater experiments (Reffet et al., 2010; doi.org/10.1130/G308...) to show how acute and obtuse diverging winds result in different dune types (inspired by @agunn.bsky.social 's Sharp Lecture last year):

Their underwater experiments and model comparison with modern aeolian dunes shows that the orientation relative to the RDD is the one that maximizes the growth rate. Also explains how dunes of different morphologies can exist under the same wind regime:

Check out our paper in @agu.org where we provide evidence for a continuous transport pathway around Titan’s equatorial dune fields, only interrupted by the Xanadu region (with implications for the nature of Titan’s sand grains!) agupubs.onlinelibrary.wiley.com/doi/full/10....

dune find of the day: laterally linked and lone barchans in the Bodélé Depression, Chad (near 17.12°N, 17.87°E)