Your’s was a bad date, mine was a catastrophe

Transformation of chemical elements, due to solar plasma storm waves, might change dating results for specific techniques.

Traces of an enormous solar storm that battered the atmosphere and showered Earth in radioactive particles more than 2,500 years ago have been discovered under the Greenland ice sheet.

Scientists studying ice nearly half a kilometre beneath the surface found a band of radioactive elements unleashed by a storm that struck the planet in 660 BC.

It was at least 10 times more powerful than any recorded by instruments set up to detect such events in the past 70 years, and as strong as the most intense known solar storm, which hit Earth in AD 775...
Radioactive particles from huge solar storm found in Greenland | The Guardian

Your's was a bad speed date, our dating was catastrophic

catastrophe dating techniques

Electromagnetic excitation of planets, particles, humans. Radiating life and death.

Scientists have come to realise over the past decade that intense solar storms can leave distinct traces when they crash into the planet. When high energy particles slam into the stratosphere, they collide with atomic nuclei to create radioactive isotopes of elements such as carbon, beryllium and chlorine. These can linger in the atmosphere for a year or two, but when they reach the ground they can show up in tree rings and ice cores used to study the ancient climate.

Muscheler’s team analysed two ice cores drilled from the Greenland ice sheet and found that both contained spikes in isotopes of beryllium and chlorine that date back to about 660 BC. The material appears to be the radioactive remnants of a solar storm that battered the atmosphere.

The scientists calculate that the storm sent at least 10bn protons per square centimetre into the atmosphere.
Radioactive particles from huge solar storm found in Greenland | The Guardian

Your's was a bad date, mine turned into a Carrington Event

catastrophic dates

Other previous plasma and electromagnetic storm waves have struck, gone through, transformed ours planets electromagnetospheres including atmospheric layers, ocean and Telluric currents and geological strata.

Carrington Event: Geomagnetic storm of 1859, also called Carrington storm, largest geomagnetic storm ever recorded. The storm, which occurred on Sept 2, 1859, produced intense auroral displays as far south as the tropics. It also caused fires as the enhanced electric current flowing through telegraph wires ignited recording tape at telegraph stations.

On the previous day, British astronomer Richard Carrington of the Royal Greenwich Observatory had made the first observations of a white-light solar flare, a bright spot suddenly appearing on the Sun. Carrington noted the coincidence (but did not claim a direct connection) between the geomagnetic storm and the solar flare, thus prefiguring the discipline of space weather research.

It is now thought that the active region on the Sun that produced the white-light flare also produced a fast coronal mass ejection (CME), a large eruption of magnetized plasma that subsequently produced the geomagnetic storm. Although CMEs are often associated with solar flares, the two can occur independently.
Carrington geomagnetic storm of 1859 | Encyclopaedia Britannica

Why should I care about other peoples catastrophic dating techniques?

Recently, it has been confirmed that extreme solar proton events can lead to significantly increased atmospheric production rates of cosmogenic radionuclides. Evidence of such events is recorded in annually resolved natural archives, such as tree rings [carbon-14 (14C)] and ice cores [beryllium-10 (10Be), chlorine-36 (36Cl)].

Here, we show evidence for an extreme solar event around 2,610 years B.P. (∼660 BC) based on high-resolution 10Be data from two Greenland ice cores. Our conclusions are supported by modeled 14C production rates for the same period. Using existing 36Cl ice core data in conjunction with 10Be, we further show that this solar event was characterized by a very hard energy spectrum. These results indicate that the 2,610-years B.P. event was an order of magnitude stronger than any solar event recorded during the instrumental period and comparable with the solar proton event of AD 774/775, the largest solar event known to date.

The results illustrate the importance of multiple ice core radionuclide measurements for the reliable identification of short-term production rate increases and the assessment of their origins.
Multiradionuclide evidence for an extreme solar proton event around 2,610 B.P. (∼660 BC)

If the event is electromagnetically different. Explosive plasmasphere discharges like Chelyabinsk meteorite, Tunguska, Barringer Meteorite Crater...

The original crystallization age of the parent body asteroid, says Righter, might be 4.5 billion years old. But in this case, he says, they found multiple ages using three or four different chronologic detection techniques.

Righter says he and colleagues found evidence for about a dozen different parent-body impact events in pieces of the Chelyabinsk meteorite they studied; ranging from 300 million years ago to as recently as 27 million years ago.

“Geologically, that’s very young,” said Righter. “Ages determined on ordinary chondrites can be as old as over 4 billion years old. But there’s hardly ever any evidence for these young ages.”
NASA Surprised By Chelyabinsk Russian Meteor Fragments

Society for Interdisciplinary Studies news report

Monster solar storm that hit Earth discovered in the past - The comments section is well worth a browse as various ideas are given an airing. They include a short discussion on whether it could, or not, have affected C14 dating methodology. I can't think of anything in particular that is recorded from the era that might have a connection - but would auroral phenomena at lower latitudes have been that remarkable. The Chinese might come up with something as they recorded heavenly portents. Interestingly, it is 50 years later that we had a C14 anomaly from the ruins of Nineveh (around 610BC). Three skeletons were C14 dated between 150 and 180 years too old to the 8th century BC rather than the early 7th century BC). There are also problems in early to mid Iron Age Britain - an occupation downturn (or dark age) of sorts, not fully understood or addressed. The date also coincides with the first calibration curve - where it diverged from the raw C14 data.

Another point to bear in mind is that the later 640s BC witnessed a population collapse in the Assyrian empire (and the beginning of its downfall) closely followed by an eruption of Scythians on the northern border, an idependence movement in Egypt and in Judah (of Josiah) etc.
Big Solar Event 660BC | Society for Interdisciplinary Studies