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aidaanva committed Jan 31, 2025
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58 changes: 37 additions & 21 deletions assets/documentation/radiocarbondates/README.md
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Expand Up @@ -160,11 +160,11 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
## reference_citation_depth

- Where/when was the sample physically dated?
- 1: radiocarbon date was published in the ancient metagenomics study.
- 2: the date was published in an earlier study.
- 3: the date was published in a different publication from the secondary citation.
- Unknown: when it is unsure where the date was published.
- NA: for samples were not dating information is available.
- `1`: radiocarbon date was published in the ancient metagenomics study.
- `2`: the date was published in an earlier study.
- `3`: the date was published in a different publication from the secondary citation.
- `Unknown`: when it is unsure where the date was published.
- `NA`: for samples were not dating information is available.

- Missing value: `Unknown` or `NA`.

Expand All @@ -173,7 +173,9 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
- Digital Object Identifier (DOI) of the publication were the precise-radiocarbon date was published.

- Specify:

-`Unknown` when `reference_citation_depth` is set to `Unknown`.

- `NA` for samples were not dating information is available.

- Missing value: `Unknown` or `NA`.
Expand Down Expand Up @@ -208,10 +210,13 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
## spectrometry_type

- The spectrophotometry method used to measure the delta carbon-13 value (δ13C or d13C):
- Isotope Ratio Mass Spectrometer (IRMS).
- Accelerated Mass Spectrometer (AMS).

- `IRMS`:Isotope Ratio Mass Spectrometer.

- `AMS`: Accelerated Mass Spectrometer.

- Specify:

-`NR` when this is not reported.
-`NA` when the sample has no radiocarbon date.

Expand All @@ -225,9 +230,12 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field

- Valid values:
- `TRUE`: pretreatment applied

- `FALSE`: no pretreatment applied
- `NR`: pretreatment not reported or unsure whether a pretreatment was applied.
- `NA`: date is not a radiocarbon date.

- `NR`: pretreatment not reported or unsure whether a pretreatment was applied

- `NA`: date is not a radiocarbon date


## pretreatment_type
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- This is normally the value that the C14 lab will report.

- Specify:
- `-99999` if a radiocarbon date is reported but the uncalibrated date is not reported.
- `-99999` if a radiocarbon date is reported but the uncalibrated date is not reported

-`NA` if date is not a radiocarbon date


## uncalibrated_uncertainty_plus_minus

- Uncertainty value around uncalibrated date in calendar year date Before Present notation, typically indicated by ± in the C14 lab report.

- Specify:
- `-99999` if a radiocarbon date is reported but the uncalibrated uncertainty is not reported.

- `-99999` if a radiocarbon date is reported but the uncalibrated uncertainty is not reported

-`NA` if date is not a radiocarbon date


## delta_13c

- The δ13C value of the dating in ppm (‰).
Expand Down Expand Up @@ -315,8 +328,8 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
- Whether a calibration for the radiocarbon date is reported.

- Values:
- TRUE
- FALSE
- `TRUE`
- `FALSE`

- `NA` should be used when date is not radiocarbon date.

Expand Down Expand Up @@ -437,7 +450,9 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
- Accepted values: `TRUE` or `FALSE`

- Specify `NA` if:

- Date is not a radiocarbon date

- No reservoir effect was reported/mentioned.


Expand All @@ -460,8 +475,9 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
- If a reservoir effect was reported but the applied offser is not reported specify `-99999`.

- Specify `NA` if:
- Date is not a radiocarbon date
- No reservoir effect was reported.

- Date is not a radiocarbon date
- No reservoir effect was reported.

## reservoir_offset_reported_sd

Expand All @@ -470,8 +486,8 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
- If a reservoir effect was reported but the standard deviation of the actual offset applied is not reported specify `-99999`

- Specify `NA` if:
- Date is not a radiocarbon date
- No reservoir effect was reported for the specific sample.
- Date is not a radiocarbon date
- No reservoir effect was reported for the specific sample.

## reservoir_aquatic_carbon_perc

Expand All @@ -480,8 +496,8 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
- If a reservoir effect was reported but the carbon percentage from aquatic contribution is not reported specify `-99999`

- Specify `NA` if:
- Date is not a radiocarbon date
- No reservoir effect was reported for the specific sample.
- Date is not a radiocarbon date
- No reservoir effect was reported for the specific sample.

## reservoir_aquatic_carbon_perc_sd

Expand All @@ -490,5 +506,5 @@ The SRS code is to the left of the SAMEA-like code under the **sample:** field
- If a reservoir effect was reported but the standard deviation of the carbon percentage from aquatic contribution is not reported specify `-99999`

- Specify `NA` if:
- Date is not a radiocarbon date
- No reservoir effect was reported for the specific sample.
- Date is not a radiocarbon date
- No reservoir effect was reported for the specific sample.

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