It look like you have not answered my question. Here again:
How much of an error are you talking about? A decade? A thousand years? A million years? Which dating methods are you talking about?
The errors vary with the type of testing. I tried to show you there is no set error.
From what I understand a piece of wood dated just prior to the flood might produce an error date to be 50,000 years older than a piece of wood taken from a tree that grew just after the flood.
Now about the New Zealand testing: Basically with that test the wrong type of testing was used:
Which creates quite a problem for Old Earthers....How many erroneous dates made it into text book and were presented s fact?
Here's AI on the subject of dating new lava...
Oh goody...an AI answer.
Why This Happens
Geologists and volcanologists do not view this as proof that radiometric dating is broadly invalid, but rather as a well-documented analytical limitation called the excess argon problem.
Yes, broadly invalid...is still invalid.
How many false dates have been put into text books and passed off as truth?
The Scientific Consensus
Volcanologists are well aware of this anomaly and therefore avoid using Potassium-Argon dating on fresh, young volcanic rocks.
That's nice.
About the Grand Canyon...That reflects two different events. The younger lava flows are not under the older flows, but are physically lower because erosion deepened the canyon with the youngest situated closer to the river channel while the older is stacked higher up on the canyon walls.
LOL...as you said...the so-called older is higher up.
Your coal example...How was the testing done? How do you know that there was not Situ production? Carbon would have fully decayed. Where's the science?
It then appears that with all this in-situ contamination the Old earthers claim exist...how do they discriminate against it?
Old-earth advocates repeat the same two hackneyed defenses, even though they were resoundingly demolished years ago. The first cry is, “It’s all contamination.” Yet for thirty years AMS radiocarbon laboratories have subjected all samples, before they carbon-14 date them, to repeated brutal treatments with strong acids and bleaches to rid them of all contamination.
6And when the instruments are tested with blank samples, they yield zero radiocarbon, so there can’t be any contamination or instrument problems.
The second cry is, “New radiocarbon was formed directly in the fossils when nearby decaying uranium bombarded traces of nitrogen in the buried fossils.” Carbon-14 does form from such transformation of nitrogen, but actual calculations demonstrate conclusively this process does not produce the levels of radiocarbon that world-class laboratories have found in fossils, coal, and diamonds
ref