# The TL dates are firing dates

> Still possible: The TL dates record the original firing, so the Iron Age, medieval and modern groups are objects made in those periods.

Source: https://mysteriesdept.com/mysteries/glozel/answers/ANS0DEDX1WN3PWC/the-tl-dates-are-firing-dates  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Glozel: the inscribed tablets of the Fradin field](https://mysteriesdept.com/mysteries/glozel)[Do the thermoluminescence dates on the Glozel ceramics record the original firing or a later reheating?](https://mysteriesdept.com/mysteries/glozel/questions/QST0DEDTPR71P95/do-the-thermoluminescence-dates-on-the-glozel-ceramics)Answer

Answer · Glozel: the inscribed tablets of the Fradin field

# The TL dates are firing dates

The TL dates record the original firing, so the Iron Age, medieval and modern groups are objects made in those periods.

**Still possible** Answers **1** question0

## Where it stands

**Still possible** One piece of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- Surface and core TL agree on every object.
- Objects of one typological class fall into one date group.

## What would rule it out

- Paired measurements show different ages in surface and core on a substantial share of objects.

## Evidence 1 for · 1 against

[Control TL measurements on local medieval and Gallo-Roman sherds gave dates consistent with their archaeological age…](https://mysteriesdept.com/mysteries/glozel/evidence/EVD0DEDYTFFZFYT/control-tl-measurements-on-local-medieval-and-gallo-roman)

Suggestive

FOR

[Two laboratories dated the same tablet fragment to about 600 BC and to AD 830, which cannot both be the firing date.](https://mysteriesdept.com/mysteries/glozel/evidence/EVD0DEDYVZMBR9X/two-laboratories-dated-the-same-tablet-fragment-to-about-600)

Supported

AGAINST

## The questions it answers

[Do the thermoluminescence dates on the Glozel ceramics record the original firing or a later reheating?](https://mysteriesdept.com/mysteries/glozel/questions/QST0DEDTPR71P95/do-the-thermoluminescence-dates-on-the-glozel-ceramics)

Open2 answers, none ahead

## Cite it

```
Mysteries Department. (2026). The TL dates are firing dates [Answer ANS0DEDX1WN3PWC]. https://mysteriesdept.com/r/ANS0DEDX1WN3PWC
```

Key

**ANS** 0DEDX1WN3PWC

Kind

Answer · hypothesis

Proposed

[Session 1](https://mysteriesdept.com/mysteries/glozel/sessions/SES0DEEA8YVZY8C/session-1-glozel-seeded-corpus-readings-and-open-data) · 31 Oct 2026

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