---
# System prepended metadata

title: IsoBank Metadata Fields by Group

---

# IsoBank Metadata Fields by Group
*Last revised: 2021-10-11*  

Each metadata field below is defined with the following elements:

- **Field Name**: A display name for the metadata field.
- **Ingest Template Column Name**: The name of the column in an ingest template CSV file created using the Template Generator tool.
- **Description**: Text describing the information that the metadata field should contain as a value. 
- **Use**: An indication of whether the metadata field is "Required", "Recommended", "Optional", "Conditionally Required", or "Conditionally Recommended".
- **Use Condition**: The condition dictating when a "Conditionally Required" metadata field becomes "Required", or a "Conditionally Recommended" metadata field becomes "Recommended". "None" indicates that there are no conditions.
- **Number of Values Allowed**: An indication of the minimum and maximum number of values that can be added to the metadata field.
- **Expected Value Type**: Indication of the type of value the field takes, this will be used for validation.
- **Controlled Terms**: A list of valid terms or link to published terms that are valid.

## Collected Sample
**Field Name**: Chronometric Age Measurement (BP)  
**Ingest Template Column Name**: chronometric_measurement  
**Description**: The chronometric age reported as the minimum of an age estimate in years before the present (BP).  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Chronometric Age Standard Deviation  
**Ingest Template Column Name**: chronometric_standard_deviation  
**Description**: The standard deviation on the the chronometric age measurement.  
**Use**: Conditionally Recommended  
**Use Condition**: Chronometric Age Measurement (BP)  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Chronometric Dating Method  
**Ingest Template Column Name**: chronometric_method  
**Description**: The method of dating used for the chronometric age measurement.  
**Use**: Conditionally Required  
**Use Condition**: Chronometric Age Measurement (BP)  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Chronometric Laboratory Identifier  
**Ingest Template Column Name**: chronometric_lab_id  
**Description**: The unique identifier (or code) for the chronometric dating laboratory.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collected Sample Identifier  
**Ingest Template Column Name**: collected_sample_id  
**Description**: The identifier(s) used by an investigator for the collected sample.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collected Sample Mass  
**Ingest Template Column Name**: collected_sample_mass  
**Description**: The mass of a collected sample.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Collected Sample Mass Unit  
**Ingest Template Column Name**: collected_sample_mass_unit  
**Description**: The unit of measure for the mass of a collected sample.  
**Use**: Conditionally Required  
**Use Condition**: Collected Sample Mass  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|milligrams|
|grams|
|kilograms|
|ounces|
|pounds|  

**Field Name**: Collected Sample Preservative  
**Ingest Template Column Name**: collected_sample_preservative  
**Description**: The preservative used on the collected sample by the investigator.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:    
|Terms|
---
|freezing|
|drying|
|salting|
|formalin|
|ethanol|
|buffer|
|other preservative|
|unknown preservative|  

**Field Name**: Collected Sample Preservative Description  
**Ingest Template Column Name**: collected_sample_preservative_description  
**Description**: An additional description of the preservative used on the collected sample by the investigator.  
**Use**: Conditionally Required  
**Use Condition**: Collected Sample Preservative: other preservative  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collected Sample Repository Name  
**Ingest Template Column Name**: collected_sample_repository_name  
**Description**: The name of the repository for long-term storage of a sample (or parts of a sample) collected in the field by the investigator.  
**Use**: Conditionally Recommended  
**Use Condition**: Collected Sample Repository Type  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collected Sample Repository Type  
**Ingest Template Column Name**: collected_sample_repository_type  
**Description**: The type of repository for long-term storage of a sample (or parts of a sample) collected in the field by the investigator.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|government repository|
|museum repository|
|private lab repository|
|research station repository|
|university lab repository|
|other repository|  

**Field Name**: Collected Sample Size Measurement  
**Ingest Template Column Name**: collected_sample_size_measurement  
**Description**: The numeric measure for a parameter of the collected sample that indicates the size of the collected sample.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Collected Sample Size Parameter  
**Ingest Template Column Name**: collected_sample_size_parameter  
**Description**: A description of the paramater measured to indicate the size of the collected sample. For example, "width" or "wing length".  
**Use**: Conditionally Required  
**Use Condition**: Collected Sample Size Measurement  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collected Sample Size Range Maximum  
**Ingest Template Column Name**: collected_sample_max_size_range_measurement  
**Description**: Maximum size in the size range of collected sample particles.  
**Use**: Conditionally Recommended  
**Use Condition**:  Material Type: particulate organic matter, plankton, airborne aerosol, soil, sediment, water particulate, wet deposition particles  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Collected Sample Size Range Maximum Unit  
**Ingest Template Column Name**: collected_sample_max_size_range_unit  
**Description**: Units for maximum size of collected particles.  
**Use**: Conditionally Required  
**Use Condition**: Collected Sample Size Range Maximum  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|nanometer|
|micrometer|
|millimeter|
|centimeter|  

**Field Name**: Collected Sample Size Range Minimum  
**Ingest Template Column Name**: collected_sample_min_size_range_measurement  
**Description**: Minimum size in the size range of collected sample particles.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: particulate organic matter, plankton, airborne aerosol, soil, sediment, water particulate, wet deposition particles  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Collected Sample Size Range Minimum Unit  
**Ingest Template Column Name**: collected_sample_min_size_range_unit  
**Description**: Units for minimum size of collected particles.  
**Use**: Conditionally Required  
**Use Condition**: Collected Sample Size Range Minimum  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|nanometer|
|micrometer|
|millimeter|
|centimeter|    

**Field Name**: Collected Sample Size Unit  
**Ingest Template Column Name**: collected_sample_size_unit  
**Description**: The unit of measure for the size of a collected sample.  
**Use**: Conditionally Required  
**Use Condition**: Collected Sample Size Measurement  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|millimeters|
|centimeters|
|decimeters|
|meters|
|inches|
|feet|
|yards|  

**Field Name**: Collected Sample Storage Container  
**Ingest Template Column Name**: collected_sample_storage_container  
**Description**: The type of storage container used for the collected sample by the investigator.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|sealed vial|
|combusted foil|
|acid-leached HDPE bottle|
|stainless steel canister|
|other container|  

**Field Name**: Collected Sample Storage Container Description  
**Ingest Template Column Name**: collected_sample_storage_container_description  
**Description**: An additional description of the type of storage container used for the collected sample by the investigator.  
**Use**: Conditionally Recommended  
**Use Condition**: Collected Sample Storage Container: other container  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collected Sample Storage Temperature (Celsius)  
**Ingest Template Column Name**: collected_sample_storage_temperature_celsius  
**Description**: The temperature in Celsius at which the sample material was stored by the investigator.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: External Record Identifier  
**Ingest Template Column Name**: external_record_id  
**Description**: An identifier to locate a record about the collected sample in an external service.  
**Use**: Conditionally Recommended  
**Use Condition**: Collected Sample Source: existing collection  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: External Record Provider  
**Ingest Template Column Name**: external_record_provider  
**Description**: An external service managing information about a collected sample and its stewardship.  
**Use**: Conditionally Recommended  
**Use Condition**: Collected Sample Source: existing collection  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|Arctos|
|Bird Banding Laboratory|
|BCO-DMO|
|R2R|
|NEON|  

**Field Name**: External Sample Identifier  
**Ingest Template Column Name**: external_sample_id  
**Description**: An identifier for the collected sample created by an external service, for example the International Geo Sample Number (IGSN).  
**Use**: Conditionally Required  
**Use Condition**: External Sample Identifier Provider  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: External Sample Identifier Provider  
**Ingest Template Column Name**: external_sample_id_provider  
**Description**: An external service that mints unique identifiers for physical samples collected by researchers, for example the International Geo Sample Number (IGSN).  
**Use**: Conditionally Required  
**Use Condition**: External Sample Identifier  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|IGSN|  

## Collection Context
**Field Name**: Archeological Time Period  
**Ingest Template Column Name**: archeological_period  
**Description**: The name of the archaeological time period.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Atom Percent Enrichment  
**Ingest Template Column Name**: atom_percent_enrichment  
**Description**: Percent enrichment of natural abundance of reference material. Used if Experimental Manipulation includes Artificial Enrichment.  
**Use**: Conditionally Required  
**Use Condition**: Experimental Manipulation: artificial enrichment  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Biome  
**Ingest Template Column Name**: biome  
**Description**: The naturally occurring community of flora and fauna occupying the habitat.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collected Sample Source  
**Ingest Template Column Name**: collection_source  
**Description**: An indication of where the collected sample was acquired. For example, whether it was gathered in the field, acquired from a museum collection, or derived from a controlled lab experiment.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|field|
|existing collection|
|lab|
|unknown|  

**Field Name**: Collection Date  
**Ingest Template Column Name**: collection_date  
**Description**: The date or date and time when sample collection occurred.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Date  
**Controlled Terms**: None  

**Field Name**: Collection Description  
**Ingest Template Column Name**: collection_description  
**Description**: An additional description of the sample collection event.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collection Protocol  
**Ingest Template Column Name**: collection_protocol  
**Description**: Reference to a published sample collection protocol.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collection Site Description  
**Ingest Template Column Name**: collection_site_description  
**Description**: An additional description of the collection site.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collection Site Identifier  
**Ingest Template Column Name**: collection_site_id  
**Description**: The investigator's identifier for a collection site.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Culture Group  
**Ingest Template Column Name**: culture_group  
**Description**: Archaeological or anthropological category describing the context in which a sample was collected.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Experimental Design  
**Ingest Template Column Name**: experimental_design  
**Description**: Reference to a published experimental design.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Experimental Manipulation  
**Ingest Template Column Name**: experimental_manipulation  
**Description**: The experimental manipulation(s) performed, possibly none.  
**Use**: Conditionally Recommended  
**Use Condition**: Collected Sample Source: field  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|none|
|artificial enrichment|
|precipitation addition|
|precipitation reduction|
|nitrogen addition|
|phosphorus addition|
|litter addition|
|litter removal|
|fire|
|community composition alteration|
|elevated CO2|
|captive feeding|
|warming|
|unknown|
|other|  

**Field Name**: Experimental Manipulation Description  
**Ingest Template Column Name**: experimental_manipulation_description  
**Description**: An additional description of the experimental manipulation.  
**Use**: Conditionally Required  
**Use Condition**: Experimental Manipulation: other  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Geological Time Period  
**Ingest Template Column Name**: geological_period  
**Description**: The name of the geological time period.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Stratigraphic Layer  
**Ingest Template Column Name**: stratigraphic_layer  
**Description**: The most specific stratigraphic layer or unit possible, either formally identified or not.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Verbatim Collection Date  
**Ingest Template Column Name**: verbatim_collection_date  
**Description**: An estimated date of collection, if the exact date is unknown.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

## Collection Location
**Field Name**: Collection Latitude (Decimal Degrees)  
**Ingest Template Column Name**: collection_decimal_latitude  
**Description**: The geographic latitude in decimal degrees of the geographic center of a collection location. Uses the spatial reference system optionally given in Geodetic Datum.

Positive values are north of the Equator, negative values are south of it. Permitted values lie between -90 and 90, inclusive.  
**Use**: Conditionally Recommended  
**Use Condition**: Collected Sample Source: field  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Collection Locality  
**Ingest Template Column Name**: collection_locality  
**Description**: The specific description of the place. A helpful reference may be: https://www.geonames.org  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Collection Longitude (Decimal Degrees)  
**Ingest Template Column Name**: collection_decimal_longitude  
**Description**: The geographic longitude in decimal degrees of the geographic center of a collection location. Uses the spatial reference system optionally given in Geodetic Datum.

Positive values are east of the Greenwich Meridian, negative values are west of it. Permitted values lie between -180 and 180, inclusive.  
**Use**: Conditionally Recommended  
**Use Condition**: Collected Sample Source: field  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Geodetic Datum  
**Ingest Template Column Name**: geodetic_datum  
**Description**: The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which the geographic coordinates given in Latitude and Longitude as based.  
**Use**: Conditionally Recommended  
**Use Condition**: Collection Latitude (Decimal Degrees), Collection Longitude (Decimal Degrees)  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Maximum Depth (Meters)  
**Ingest Template Column Name**: max_depth_meters  
**Description**: The greater depth of a range of depth below the local surface, in meters.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Maximum Distance Above Surface (Meters)  
**Ingest Template Column Name**: max_distance_above_surface_meters  
**Description**: The greater distance in a range of distance from a reference surface in the vertical direction, in meters. Use positive values for locations above the surface, negative values for locations below. 

If depth measures are given, the reference surface is the location given by the depth, otherwise the reference surface is the location given by the elevation.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Maximum Elevation (Meters)  
**Ingest Template Column Name**: max_elevation_meters  
**Description**: The upper limit of the range of elevation (altitude, usually above sea level), in meters.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Minimum Depth (Meters)  
**Ingest Template Column Name**: min_depth_meters  
**Description**: The lesser depth of a range of depth below the local surface, in meters.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Minimum Distance Above Surface (Meters)  
**Ingest Template Column Name**: min_distance_above_surface_meters  
**Description**: The lesser distance in a range of distance from a reference surface in the vertical direction, in meters. Use positive values for locations above the surface, negative values for locations below. 

If depth measures are given, the reference surface is the location given by the depth, otherwise the reference surface is the location given by the elevation.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Minimum Elevation (Meters)  
**Ingest Template Column Name**: min_elevation_meters  
**Description**: The lower limit of the range of elevation (altitude, usually above sea level), in meters.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

## Investigator Information
**Field Name**: Investigator Email  
**Ingest Template Column Name**: investigator_email  
**Description**: The email of the primary investigator serving as the contact point for the related analysis record.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Investigator Name  
**Ingest Template Column Name**: investigator_name  
**Description**: The full name of the primary investigator serving as the contact point for the related analysis record.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Investigator ORCID Identifier  
**Ingest Template Column Name**: investigator_orcid  
**Description**: The ORCID Identifier of the primary investigator serving as the contact point for the related analysis record.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

## Material Sample
**Field Name**: Material Sample Description  
**Ingest Template Column Name**: material_sample_description  
**Description**: An additional description of the material sample submitted for analysis.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Material Sample Identifier  
**Ingest Template Column Name**: material_sample_id  
**Description**: The investigator's identifier for a material sample submitted for analysis.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Material Sample Mass (Grams)  
**Ingest Template Column Name**: material_sample_mass_grams  
**Description**: The mass in grams of the material sample submitted to a lab for analysis.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Material Sample Size Range Maximum  
**Ingest Template Column Name**: material_sample_max_size_range_measurement  
**Description**: Maximum size in the size range of material sample particles prepared for analysis.  
**Use**: Conditionally Recommended  
**Use Condition**: Preparation Step: sieving, filtration  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Material Sample Size Range Maximum Unit  
**Ingest Template Column Name**: material_sample_max_size_range_unit  
**Description**: Units for the maximum size in the size range of material sample particles prepared for analysis.  
**Use**: Conditionally Required  
**Use Condition**: Material Sample Size Range Maximum  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|nanometer|
|micrometer|
|millimeter|
|centimeter|    

**Field Name**: Material Sample Size Range Minimum  
**Ingest Template Column Name**: material_sample_min_size_range_measurement  
**Description**: Minimum size in the size range of material sample particles prepared for analysis.  
**Use**: Conditionally Recommended  
**Use Condition**: Preparation Step: sieving, filtration  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Material Sample Size Range Minimum Unit  
**Ingest Template Column Name**: material_sample_min_size_range_unit  
**Description**: Units for the minimum size in the size range of material sample particles prepared for analysis.  
**Use**: Conditionally Required  
**Use Condition**: Material Sample Size Range Minimum  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|nanometer|
|micrometer|
|millimeter|
|centimeter|    

**Field Name**: Material Type  
**Ingest Template Column Name**: material_type  
**Description**: The type of material(s) in a sample submitted for analysis.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1  
**Expected Value Type**: Tree  
**Controlled Terms**: [Terms Hierarchy](https://docs.google.com/spreadsheets/d/11oV01XLONqKEKeqmTpsUnC8plYpNBFneDj1YTX1Rrz4/edit#gid=722730324)  

**Field Name**: Preparation Date  
**Ingest Template Column Name**: preparation_date  
**Description**: The date or date and time when sample preparation occurred.  
**Use**: Conditionally Recommended  
**Use Condition**: Preparation Description  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Date  
**Controlled Terms**: None  

**Field Name**: Preparation Description  
**Ingest Template Column Name**: preparation_description  
**Description**: An additional description of the preparation that resulted in a material sample submitted for analysis.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Preparation Protocol  
**Ingest Template Column Name**: preparation_protocol  
**Description**: The reference to a published sample preparation procedure.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Preparation Step  
**Ingest Template Column Name**: preparation_step  
**Description**: Preparation step(s) performed on the collected sample that resulted in a material sample submitted for isotopic analysis.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|acid fumigation|
|acidification|
|adduction|
|alkali treatment|
|centrifugation|
|chemi
cal extraction|
|column chromatography|
|cryogenic extraction|
|demineralisation|
|density fractionation|
|derivatisation|
|digestion|
|drying|
|filtration|
|gelatinisation|
|homogenisation|
|hydrolysis|
|lipid extraction|
|liquid-liquid extraction|
|none|
|other|
|oxidation|
|poisoning|
|preservative removal|
|reduction|
|rinsing|
|saponification|
|serial subsampling|
|sieving|
|solvent extraction|
|sonication|
|unknown|  

**Field Name**: Subsample Datum Point  
**Ingest Template Column Name**: subsample_datum  
**Description**: A description of the point on a collected sample from which the subsampling distance was measured.  
**Use**: Conditionally Recommended  
**Use Condition**: Preparation Step: serial subsampling  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Subsample Position  
**Ingest Template Column Name**: subsample_position  
**Description**: A physical or distance measure from the subsample datum point, indicating which portion of a collected sample was subsampled.  
**Use**: Conditionally Recommended  
**Use Condition**: Preparation Step: serial subsampling  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Subsample Position Unit  
**Ingest Template Column Name**: subsample_position_unit  
**Description**: The unit of measure for the subsample distance from the datum point.  
**Use**: Conditionally Recommended  
**Use Condition**: Preparation Step: serial subsampling  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

## Material-specific Information
**Field Name**: Bone Element  
**Ingest Template Column Name**: bone_element  
**Description**: The name of the bone element.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: bone  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Dental Element  
**Ingest Template Column Name**: dental_element  
**Description**: The type of tooth.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: tooth  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|incisor|
|canine|
|premolar|
|molar|
|undifferentiated|  

**Field Name**: Dental Element Description  
**Ingest Template Column Name**: dental_element_description  
**Description**: A further description of the dental element, or reference to a publication indicating tooth position.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: tooth  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Feather Type  
**Ingest Template Column Name**: feather_type  
**Description**: The type of feather.  
**Use**: Conditionally Required  
**Use Condition**: Material Type: feather  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|body|
|rectrix|
|primary|
|secondary|
|unknown|  

**Field Name**: GBIF Taxon ID  
**Ingest Template Column Name**: gbif_taxon  
**Description**: Internal field for storing matched GBIF taxa.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Maximum Ontogenetic Age  
**Ingest Template Column Name**: max_ontogenetic_age  
**Description**: Maximum ontogenetic age of an organismal collected sample.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Maximum Ontogenetic Age Unit  
**Ingest Template Column Name**: max_ontogenetic_age_unit  
**Description**: Units for maximum ontogenetic age of an organismal collected sample.  
**Use**: Conditionally Required  
**Use Condition**: Maximum Ontogenetic Age  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|years|
|months|
|weeks|
|days|
|hours|  

**Field Name**: Minimum Ontogenetic Age  
**Ingest Template Column Name**: min_ontogenetic_age  
**Description**: Minimum ontogenetic age of an organismal collected sample.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Minimum Ontogenetic Age Unit  
**Ingest Template Column Name**: min_ontogenetic_age_unit  
**Description**: Units for minimum ontogenetic age of an organismal collected sample.  
**Use**: Conditionally Required  
**Use Condition**: Minimum Ontogenetic Age  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|years|
|months|
|weeks|
|days|
|hours|    

**Field Name**: Ontogenetic Age Estimate  
**Ingest Template Column Name**: ontogenetic_age  
**Description**: The ontogenetic age estimate of an organismal collected sample.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: organism  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Ontogenetic Age Unit  
**Ingest Template Column Name**: ontogenetic_age_unit  
**Description**: The unit of measure for the ontogenetic age estimate of an organismal collected sample.  
**Use**: Conditionally Required  
**Use Condition**: Ontogenetic Age Estimate  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|years|
|months|
|weeks|
|days|
|hours|    

**Field Name**: Ontogenetic/Life Stage  
**Ingest Template Column Name**: life_stage  
**Description**: Life or ontogenetic stage of an organismal collected sample.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: organism  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Organism Sex  
**Ingest Template Column Name**: organism_sex  
**Description**: Sex of the organism collected, or organism from which a sample was collected.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|female|
|male|
|intersex|
|unknown|  

**Field Name**: Reproductive Condition  
**Ingest Template Column Name**: reproductive_condition  
**Description**: Reproductive condition of the organism collected, or organism from which a sample was collected.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|breeding|
|non-breeding|
|unknown|  

**Field Name**: Reproductive Condition Description  
**Ingest Template Column Name**: reproductive_condition_description  
**Description**: An additional description of the reproductive condition of the organism collected, or organism from which a sample was collected.  
**Use**: Conditionally Required  
**Use Condition**: Reproductive Condition: breeding  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Scientific Name  
**Ingest Template Column Name**: scientific_name  
**Description**: The full scientific name at the lowest Taxonomic Rank that can be determined. This field is also used to automatically find the Global Biodiversity Information Facility (GBIF) Taxon ID for the sample.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: organism  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Sediment Particle Class  
**Ingest Template Column Name**: sediment_particle_class  
**Description**: The catagorical class based on the size of sediment particles.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: sediment  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|clay|
|silt|
|sand|
|gravel|
|cobbles|
|boulders|  

**Field Name**: Sediment Source  
**Ingest Template Column Name**: sediment_source  
**Description**: The source of sediment.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|alluvial|
|lake|
|marine|
|other|
|stream|
|subaqueous|  

**Field Name**: Soil Description  
**Ingest Template Column Name**: soil_description  
**Description**: A description of the soil.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Soil Horizon  
**Ingest Template Column Name**: soil_horizon  
**Description**: The soil horizon.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|O horizon|
|A horizon|
|E horizon|
|B horizon|
|C horizon|
|R layer|
|permafrost|  

**Field Name**: Taxonomic Rank  
**Ingest Template Column Name**: taxon_rank  
**Description**: Lowest taxonomic rank that can be determined. The taxonomic rank of the most specific name in the Scientific Name.  
**Use**: Conditionally Recommended  
**Use Condition**: Material Type: organism  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|kingdom|
|phylum/division|
|class|
|order|
|family|
|tribe|
|genus|
|species|
|subspecies|
|variety|  

**Field Name**: Water Phase  
**Ingest Template Column Name**: water_phase  
**Description**: The phase of the water.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|gas|
|liquid|
|mixed-phase|
|solid|  

**Field Name**: Water Source  
**Ingest Template Column Name**: water_source  
**Description**: The source of water.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|bottled|
|cave drip|
|cloud or fog|
|dew|
|glacier or ice sheet|
|ground|
|ice core|
|intercepted|
|lake|
|leaf|
|ocean|
|other|
|overland runoff|
|precipitation|
|rime|
|river or stream|
|snow pit|
|soil|
|spring|
|stem|
|tap|
|vapor  |

## Quality Assurance and Control
**Field Name**: Analysis Date  
**Ingest Template Column Name**: analysis_date  
**Description**: The date when analysis occurred.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Date  
**Controlled Terms**: None  

**Field Name**: Analysis Type  
**Ingest Template Column Name**: analysis_type  
**Description**: An indication of the type of analysis conducted by the analytical lab.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1  
**Expected Value Type**: Lookup  
**Controlled Terms**: 
|Terms|
---
|bulk gas|
|bulk solid|
|bulk water|
|compound specific|
|unknown|  

**Field Name**: Analytical Matrix or Compound  
**Ingest Template Column Name**: analytical_matrix  
**Description**: The substance whose chemical constituents were measured during analysis.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Analytical Project Identifier  
**Ingest Template Column Name**: analytical_project_id  
**Description**: The identifier for a group of runs generated by the analytical lab.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Analytical Replicates (Count)  
**Ingest Template Column Name**: analytical_replicate_count  
**Description**: The number of analytical replicates with the same client (material) sample identifier. Analytical replicates are a homogenous sample submitted by an investigator, and split into portions by an analytical lab.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Analytical Run Identifier  
**Ingest Template Column Name**: analytical_run_id  
**Description**: The identifier for an analytical run generated by the analytical lab.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Client Identifier  
**Ingest Template Column Name**: client_id  
**Description**: The identifier for a client generated by the analytical lab.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Corrections  
**Ingest Template Column Name**: corrections  
**Description**: The corrections made to the data by the analytical lab.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|linearity|
|blank|
|amplitude|
|k factor|
|drift|
|kinetic isotope effect of derivatisation|
|exogenous carbon|  

**Field Name**: Instrumentation  
**Ingest Template Column Name**: instrumentation  
**Description**: The instrument used to generate measurements.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|DI-IRMS|
|EA-IRMS|
|HTC-IRMS|
|FIA-IRMS|
|GC-IRMS|
|LC-IRMS|
|TOC/DOC-IRMS|
|CRDS|
|CFHS-IRMS|
|other|
|ICP-MS|
|TIMS|  

**Field Name**: Measurement Scale  
**Ingest Template Column Name**: measurement_scale  
**Description**: Zero-point material that defines the isotope delta-scale to which the measurement is anchored. The international reference scale to which the measurement is being corrected.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|VPDB|
|VSMOW|
|VCDT|
|air|
|unknown|  

**Field Name**: Measurement Unit  
**Ingest Template Column Name**: measurement_unit  
**Description**: The unit of measure for a value.  
**Use**: Required  
**Use Condition**: None  
**Number of Values Allowed**: 1  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|atom percent|
|per mille|
|elemental abundance percent weight|
|elemental abundance moles|
|unknown|  

**Field Name**: Normalization  
**Ingest Template Column Name**: analysis_normalization  
**Description**: The data normalization used by the analytical lab.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|1 point|
|2 point|
|3 point|
|4+ point|  

**Field Name**: Other Instrumentation  
**Ingest Template Column Name**: other_instrumentation  
**Description**: Additional description of the instrument used to generate measurements.  
**Use**: Conditionally Recommended  
**Use Condition**: Instrumentation: other  
**Number of Values Allowed**: 0-1  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Primary Reference Material  
**Ingest Template Column Name**: primary_reference_material  
**Description**: The internationally certified reference material(s) used to anchor measurements to the international reference scale.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Quality Control Material  
**Ingest Template Column Name**: qc_material  
**Description**: The in-house reference material(s) traceable to primary reference materials through internal calibrations. Unused in calibration procedures (e.g."check").  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Quality Control Material Accuracy  
**Ingest Template Column Name**: qc_material_accuracy  
**Description**: The absolute value of the difference between the known and measured values of the quality control material.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Quality Control Material Precision  
**Ingest Template Column Name**: qc_material_precision  
**Description**: The standard deviation of the reference material and quality control material in an analytical run.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Numeric  
**Controlled Terms**: None  

**Field Name**: Secondary Reference Material  
**Ingest Template Column Name**: secondary_reference_material  
**Description**: The tertiary or in-house reference material(s) used to perform calibration procedures.  
**Use**: Recommended  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

## Related Publication
**Field Name**: Related Publication Citation  
**Ingest Template Column Name**: related_publication_citation  
**Description**: The full bibliographic citation for a related publication that uses data from this analysis.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Related Publication Identifier  
**Ingest Template Column Name**: related_publication_id  
**Description**: The identifier number of the selected type for a related publication that uses data from this analysis.  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Text  
**Controlled Terms**: None  

**Field Name**: Related Publication Identifier Type  
**Ingest Template Column Name**: related_publication_id_type  
**Description**: The type of digital identifier for a related publication that uses data from this analysis. For example, a Digital Object Identifier (DOI).  
**Use**: Optional  
**Use Condition**: None  
**Number of Values Allowed**: 0+  
**Expected Value Type**: Lookup  
**Controlled Terms**:  
|Terms|
---
|DOI|  
