Oh ye who is berift of technical savvy.....I am amused at your haughty ignorance.
Unfortunately, I was unable to locate "Cosmogenic Exposure Dating For Dummies", so this will have to do.
Essentially, As long as the surface area tested is exposed to the atmosphere, and NOT DISTURBED....by for instance, water-borne erosion, it will CONTINUOUSLY be bombarded by cosmic rays at a known and constant rate.
The "resolution" you ask for is CONTINUOUS, as long as the area is not disturbed.
If you read the scientific article referenced:
Had the following key pieces of data:
(1) "Here we assess the age of cessation of erosion, as a consequence of aridification, on *EROSION-SENSITIVE LANDFORMS* in the Coastal Cordillera."
(2)[results of tests] "The majority of the ages are older than 19 Ma (n = 9) with clusters at 20 Ma (n = 3) and 25 Ma (n = 5)(Fig. 4). One clast yielded an exposure age of ca. 37 Ma. Few clasts are younger: one age is ca. 9 Ma, and two identical ages are ca. 14 Ma. "
The one that got MY attention was the test site that was situated on an alluvial fan. An alluvial fan in geological terms is a 'fan or cone-shaped deposit of water-transported material'. Look it up.
"and the alluvial fan (E) both give ages ca. 120 ka." .
So even what little water the Atacama Desert DID experience left a recognized erosional remnant, which is dated at 120 THOUSAND years ago.
You're Noachian Flood story is * A_G_A_I_N * put to rest.
I think we can officially add this to the list of flood refutations so to bring the total to 14.