3 April 2020

Friday Fold: Saudi Arabia

Posted by Callan Bentley

To Saudi Arabia for today’s Friday fold, visible here at Wadi Fatima:

Annotated to show the rough trace of bedding:

This is a contribution from Ezra Zaini. He says:

In addition to the rampant folding, the area is affected by regional faulting (Najd F.S to the north and extensional faulting related to the Red Sea to the west). The formation itself is known for alternating beds of limestones and reddish purple siliceous/lithified mudstones. It and other surrounding formations unconformably overlay Precambrian Arabian Shield with all of them being dated back to the Cenozoic. (Oligocene-Miocene is what’s been agreed upon.)

Zooming in more closely:

And annotated:

I hope you’re doing well, dear reader.

It’s been a rough week, and it doesn’t look like it’s going to get better any time soon. Vicarious armchair geology is all that’s safe at the moment, it would seem.

If you have cool folds to share, please get in touch.