The Ghubrah Bowl depression No2. David A Lockwood Black & White. 12/04/201713/04/2017 The Ghubrah Bowl depression. Like this:Like Loading... Related TaggedGhubrah Bowl.Jebal GhubrahJebelJebel AkhdarWadi Mistall Published by David A Lockwood Amateur photographer with an interest in Prehistory (Rock Art). View all posts by David A Lockwood Published 12/04/201713/04/2017
4 thoughts on “The Ghubrah Bowl depression No2.”
Thanks! Impressive as ever. Of course I did have to go look up Permian etc Doesn’t seem to matter how often I attempt memorising geological periods, they disappear. A mnemonic is required. Love big numbers like 700 million.
So did I 🙂
From my book ‘Oman’s Geological Heritage’ or as near as I could gather all the technicalities.
Ahem – what IS the Ghubrah Bowl depression…a geological oddity caused by what?
I am not geologically literate !
As far as I understand these things: The Ghubrah Bowl was formed because Permian sandstones, siltstones & conglomerates were eroded out from much harder Pre-Cambrian Diamictites & Permian Carbonates; forming the ridge of mountains surrounding the area. Some of these are more than 700 million years old & deposited by glacial action when Oman was nearer the equator & most of the earth was covered in ice, the “snowball earth” theory.