Interbedded layers are evidence of a catastrophic origin of the geologic column.
In the Grand Canyon the cambriam muav and the mississippian redwall limestone is interbedded.
Nicolas Steno first proposed that interbedding can only occur during contemporaneous deposition, so a 200 million year time gap between the cambrian and mississippian is impossible according to this principle of geology.
The catastrophic origin of these layers is further corroborated by billions of orthocone nautiloids found by Steve Austin.
The picture from the Grand Canyon a prime example of something I posted about last week. Recently it was posted that I refuse to comment upon pictures showing examples of geology and I replied that I have done so quite often, but perhaps this impression came from my mentioning that there is a danger in making geologic determinations from photos as it is difficult to correctly ascertain spatial relationships between strata. Here is an example of what I was saying, where a wrong conclusion has been reached. However, an experienced geologist that has worked in the field would not make the mistake made here as it is relatively easy to see in this photograph that there is no inter-bedding of the Redwall Limestone and the underlying Muav Limestone. Having a portion enlarged makes this even more clear.
As I posted in another thread a long time ago, the strata indicated as inter-bedded appear to me to be the Temple Butte Limestone underlying the Redwall Limestone. This unit has weathered into a series of ledges that here are being claimed as inter-bedding with the Muav yet clearly are not. It is bedded, as shown by multiple ledges, but there is no evidence of inter-bedding with the Muav which weathers into a characteristic slope. The individual beds can be followed laterally as far as one can determine from looking at a photo.
I have commented on that unconformity claim before and why I feel it is bogus and an example of poor geology that was poorly documented. It was not done where this photo was taken, and the scale of the inter-bedding was less than what appears to be claimed in this photo. However, I would bet that it was this study that caused somebody to make a claim for this photo. I have also commented on Steve Austin's work with nautiloids and nobody was able to tell me why Austin has never published his findings if they were so conclusive and impressive. All we have is the oft-quoted abstract which does not give outcrop locations or data such as the numbers of fossils in the outcrops he studied, etc.
I also do not remember Steno writing about inter-bedding, and I doubt that he ever did so directly. His contributions were very significant but he wrote about the lateral continuity of facies and not inter-bedding. I believe I once saw a creationist piece that jumped to this conclusion but I do not think this can be verified in the actual writings of Steno. He is not attributed with coming up with such a concept outside of perhaps some creationist claims. What he actually wrote about was the observation that sediments that form strata are deposited from water.