Jordan
Title: Desert Abstract - False Bedding Planes
Desert Abstract - False Bedding Planes (56) *
Jamesp Gold Star Critiquer/Gold Note Writer [C: 1369 W: 9 N: 6334] (18906)
[Only registered members may post.] [Threaded View] [Translate]
To corjan3: Sorry but . . . Jamesp Gold Star Critiquer/Gold Note Writer [C: 1369 W: 9 N: 6334] (18906)::2012-03-14 1:58
Hi Neels

The surface is quite flat - it was inside what would have been a dwelling at one time. The trough you can see is not a groove as the 'wall' is perfectly smooth.

I was not intending to give a detailed analysis with the post, more a layman's version, as most members come to the site from a biological perpective as you will have noticed.

I understand what you are saying, but even so, the formation here is highly debateable.

Thanks for your comments,

Best wishes

James
Re: To corjan3: Sorry but . . . corjan3 Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 430 W: 49 N: 964] (4707)::2012-03-14 4:55
Hi James,
My apology if I was wrong. I then ahve no other explanation and I accept you identification. I have been measuring palaeocurrent directions on different kinds of cross-bedding, both trough and planar, and I have never seen that type of geometry. However, I do not claim to have seen it all. Perhaps some kind of ripple structure then?
Thank you and best wishes.
Neels
Re: To corjan3: Sorry but . . . corjan3 Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 430 W: 49 N: 964] (4707)::2015-08-27 17:29
Hi James,
After a long time I bumped into this photo again tonight and I suggest that the layers may be stromatolites formed by algal mats fossilised with silica or, more probably, calcium carbonate replacement. Best wishes.
Neels