tyb
https://www.instagram.com/reel/DGhfpgHsOg6/
The boss knows what he's doing, we'll have to see how it all plays out.
inb4 the 4am shitshow
I’ll admit it aligns with the MO for the last 8 years
Tyb
Limestone Erosion rates say this is way more recent, within the mainstream time frame.
Sphinz and enclosure wall are
WAY older that we are told due to the classic cater erosion, but this church you posted wouldn't make the cut without constant maintenance and thus knowledge of the structure.
This varies a lot depending on climate, but here's some figures from Enos (1991)
All units are in mm/kyr (m/Myr)
Lowland, Maritime, temperate (i.e NW Europe): 32+/-11
Mountain, Maritime, temperate (Cent. Europe): 102+/-65
Mountain, Maritime, temperate (Mt Ranier): 3000-8000
Mediterranean, high-mountains (Italy, France): 449
The above are general figures. For limestones only, there are also figures for chemical weathering:
Jamaica: 73
Derbyshire: 83
Mendips: 63
Texas: 5
For coastal erosion of limestones:
Red Sea, reef limestones: 1000
Bikini Atoll, beach rock: 300
Aldabra Atoll, reef limestone (intertidal): 500-4000
For a waterfall, I think something along the lines of 100 mm/kyr would be about right. I suspect there are papers on this kind of thing for specific examples, rather than the general paper I referenced above.
Enos, P. (1991) Sedimentary parameters for computer modeling. Bulletin of the Kansas Geological Survey, 1991, 233, 64-99