| carbon_nitro_ratio |
Atomic ratio of carbon to nitrogen |
| carbon_proportion |
Proportion of carbon in a non-proteinaceous sample used for dating (such as c... |
| conventional_age |
The uncalibrated age from the laboratory measurement |
| conventional_age_error |
The 1-standard deviation around the conventional radiocarbon age (C14) measur... |
| coordinate_precision |
A decimal representation of the precision of the coordinates given in the dec... |
| decimal_latitude |
The geographic latitude (in decimal degrees, using the spatial reference syst... |
| decimal_longitude |
The geographic longitude (in decimal degrees, using the spatial reference sys... |
| delta_13_c |
The delta carbon-13 value of the sample (δ13C), which is the ratio of the sta... |
| delta_13_c_calculation_method |
Whether the radiocarbon date was calculated with an AMS derived δ13C, an IRMS... |
| delta_13_c_error |
The error associated with the delta carbon-13 (δ13C) value expressed (‰) nota... |
| delta_13_c_method |
Which spectrophotometry method was used to measure the delta carbon-13 value, |
| delta_15_n |
The delta nitrogen-15 value of the sample (δ15N), which is the ratio of the s... |
| delta_15_n_error |
The error associated with the delta nitrogen-15 (δ15N) value expressed (‰) no... |
| delta_34_s |
The delta sulfur-34 value of the sample (δ34S), which is the ratio of the sta... |
| delta_34_s_error |
The error associated with the delta sulfur-34 (δ34S) value expressed (‰) nota... |
| entries |
A list of multiple radiocarbon determinations |
| f14c |
The F14C value from the laboratory measurement, i |
| f14c_error |
The 1-standard deviation uncertainty around the F14C (C14) measurement, |
| lab_code |
Unique laboratory code designation of the institution that made the measureme... |
| lab_id |
The unique identifier associated with a specific radiocarbon determination, |
| measurement_method |
Type of measurement method the determination was made by |
| pretreatment_method_description |
Description of specific pretreatment method used for decontamination of sampl... |
| pretreatment_method_protocol |
A DOI, URL, or PMID to a publication describing the specific method of pretre... |
| pretreatment_methods |
Specify the types of general pretreatment methods applied for decontamination |
| pretreatment_proportion_yield |
Proportion of weight after pretreatment to sample starting weight represented... |
| pretreatment_yield |
Amount of sample remaining after pretreatment in miligrams (mg) |
| recrystalisation |
Sample shows evidence of recrystalisation which should be accounted for durin... |
| sample_anatomical_part |
Anatomical part from which the sample is derived |
| sample_ids |
Any identifier associated with the sample under measurement |
| sample_location |
Name of the geographic location from which the sample originated |
| sample_material |
Material of the sample used to extract carbon used for radiocarbon dating mea... |
| sample_starting_weight |
Amount of sample material used at beginning of measurement in miligrams (mg) |
| sample_taxon_id |
A taxonomic ID of the organism from which the sample used to extract carbon u... |
| sample_taxon_id_confidence |
Specify the level of confidence of an exact taxon identification |
| sample_taxon_scientific_name |
A scientific name of the taxon corresponding to the taxonomic ID, or when a |
| suspected_reservoir_effect |
Specify whether there is a suspected carbon reservoir effect that |
| suspected_sample_contamination |
Specify whether the sample has suspected contamination that may influence mea... |
| suspected_sample_contamination_description |
If a sample has a suspected contamination (suspected_sample_contamination), p... |