Fossils on Friday – Crossbedding & Horizontal Deposition Pt. 4!

Hello all, and welcome back to Fossils on Friday, and our continued delve into the geological world of crossbedding and horizontal deposition!

Over the last few weeks, we have looked into red rocks in the USA and the UK, particularly focussing on Texas and Shropshire. We’ve also looked into the way that they were deposited, and how the layers form sideways. Now, we finally begin to wrap it all up, but we need to discuss how these layers and deposits were all formed in the first place!

We have established that these formations were deposited sideways by horizontally-moving water. Great. Now let’s ask “How big was this body of water?”

Let’s begin in the UK. The Triassic red rocks begin up in Scotland. They run down into Yorkshire, around Filey. Down into Cheshire, and then into Shropshire. They run all down the midlands, showing up in outcrops and cuttings, before moving into Bristol and Aust Cliff. Then down through Somerset, and onto the South Coast, particularly around Exmouth – Budleigh Salterton. So these red rocks, and the water that formed them, once covered the entirety of the UK.

But, as you all know, it doesn’t stop there. Over the Atlantic the red rocks crop up again. From Florida through Texas, New Mexico, Arizona, up through Utah, Colorado and heading North. The red beds are found throughout Europe, and down through Africa, and over in Australia.

The red rocks are truly a worldwide occurrence. Do you see the implication? The body of water that deposited the red rocks was worldwide as well. And another thing about the water – it was a flood. We know this because of the size of some of the boulders found in the red rocks – up to the size of a car. In order to move such large boulders and sediments, the water has to be moving at incredible speeds – speeds only obtainable in a flood.

The Bible records a worldwide flood in the days of Noah. A global watery catastrophe that covered the earth, ripping apart land masses and destroying all life on the planet. Not only does this record fit perfectly with geology, including the formation of the red rocks, it also very nicely provides all the processes needed for fossilisation.

As we move forward in Blog About Britain, we will be exploring some other rock layers and types that also give evidence to the flood of Noah’s day.