Geology of Dunes and dry playas interest you ? ( I know I Know )

[Old55]

https://www.sciencedirect.com/science/article/pii/S1875963713000487. 20,000 years ago the weather really sucked around here ! Eolian deposition cycles since AD 500 in Playa San Bartolo lunette dune, Sonora, Mexico: Paleoclimatic implications

 

[Old55]

Many it was no picnic 20000 years ago either !https://a.atmos.washington.edu/academics/classes/2001Q1/211/Group_projects/group_D_F00/index.html

 

[Jungle Jim]

Out here in the Yuma desert we have 20,000 year old pack rat poop piles with Pinion Pine cones, Joshua Tree seed pods, Juniper berries and Giant Ground Sloth hair embedded in them.

Also, the dunes around the coast of Sonora are composed entirely of ground up marine life shells.

JJ

 

[Old55]

Out here in the Yuma desert we have 20,000 year old pack rat poop piles with Pinion Pine cones, Joshua Tree seed pods, Juniper berries and Giant Ground Sloth hair embedded in them.

Also, the dunes around the coast of Sonora are composed entirely of ground up marine life shells.

JJ

This is a good read if you have the time