I'm betting the "lab experiment" doesn't look anything like the graphic, but seeing as there is no reference to any paper on this "experiment" (or any reference to who performed it or where or when ... ) it is hard to discuss the actual data.
Dollars to doughnuts it's Berthault.
Claim CD240. Note that No Aswers in Genesis has moved; home.austarnet.com.au/stear must be replaced by noanswersingenesis.org.au. E.g.
Berthault's Stratigraphy: Rediscovering What Geologists Already Know and Strawman Misrepresentations of Modern Applications of Steno's Principles
.