> For the complete documentation index, see [llms.txt](https://docs.geosamples.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geosamples.org/metadata-schema/migration-from-the-legacy-schema/field-crosswalk-old-greater-than-new.md). # Field crosswalk (old -> new) *** ### description: How SESAR 1.0 sample fields map to the current schema. icon: table ## Field crosswalk (old → new) This is the sample-field mapping used when SESAR 1.0 records were loaded into the current registry. Vocabulary **list** names (sample type → object type, and so on) are on [Renamed vocabularies](/metadata-schema/migration-from-the-legacy-schema/renamed-vocabularies.md). Unlisted fields kept the same name: **IGSN**, **sample name**, **latitude** and **longitude** (including end coordinates), **country**, **province / state**, **county**, **city**, **locality**, **location description**, **size**, **purpose**, **elevation**, **depth in core**, **vertical datum**, **cruise / field program**, **publish date**, and archive contacts. ### Renamed fields | SESAR 1.0 | Now | Notes | | ------------------------------------------- | --------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | User code | SESAR code (`sesar_code`) | | | Sample type (and subtype) | Object type | Mapped through the object-type list ([value mapping](/metadata-schema/migration-from-the-legacy-schema/sample-type-to-object-type.md)). The original type is kept as **legacy sample type** | | Field name | Material name (verbatim) (`material_name_verbatim`) | Informal taxonomy / field name | | Description | Sample description | See [Combined text](#combined-text) | | Age min / max / unit | Numeric age min / max / unit | Units were normalized (for example `Ma` → `million years (Ma)`). Unrecognized units were appended to sample description | | Geological age | Geological age (`geologic_age_verbatim`) | Same content; the field name spelling changed | | Geological unit | Geological unit (`geologic_unit`) | Same content, spelling of the field name changed | | Collection method | Sampling method | | | Collection method description | Sampling method description | | | Collection start / end date, date precision | Sampling start / end date, sampling date precision | | | Navigation type | Location method | Form still says **Navigation type / Location method** | | Material (top-level classification) | General material type | Mapped through the material-type list ([value mapping](/metadata-schema/migration-from-the-legacy-schema/classification-to-material-type.md)). Original value kept as **legacy top-level classification** | | Classification | Material types | Mapped through the material-type list ([value mapping](/metadata-schema/migration-from-the-legacy-schema/classification-to-material-type.md)). Original value kept as **legacy classification**. A sample can have more than one material type now | | Parent sample (`origin_sample_id`) | Parent sample | Set from the parent’s sample ID; shown as parent IGSN | | External parent sample type | External parent object type | Mapped through the object-type list | | Other names (`sample_additional_name`) | Other names | Copied as additional names on the sample | | Platform name / type / description | Platform | One platform record (name, type, owner, description). Different descriptions are distinct platforms | | Launch platform name / launch type | Launch platform | | | Launch ID | Launch ID (`launch_label`) | Same idea, stored as launch label | | Collector / collector detail | Collectors | Collector name is the agent; collector detail is the collector description | | Current / original archive | Current / original archive, or **storage location** | If the archive string was a personal storage place, it went to storage location instead of an archive record | | Easting, northing, zone | Geospatial location | UTM is stored separately; it does not replace latitude and longitude | **External sample ID** was copied only when it differed from the sample name. **Continent** is new: it is filled from the sample’s country. ### Combined text **Sample description** is the old **description**, **classification comment**, and **sample comment**, joined with `;`. If the age unit could not be mapped, `Legacy age unit: …` was added. ### Related records (not a single sample field) | SESAR 1.0 | Now | | ------------------------------------------- | ------------------------------------------------------------------------------------------ | | Sample documents (`sample_doc`) | Related resources (`uri_type` local file). Type from MIME (image, text, dataset, or other) | | Publication URLs (`sample_publication_url`) | Related resources. DOI URLs keep type DOI when possible; other URLs are **Other** | | Groups | Sample groups | | Sample delete request | Sample deactivate request (`delete_reason` → deactivate reason) | ### Not carried onto the sample These legacy sample columns were not written as sample fields: | SESAR 1.0 | What happened | | --------------------------- | ------------------------------------------- | | `sample_unit` | Not migrated | | `igsn_digit`, `igsn_to_int` | Internal IGSN counters; not sample metadata | Internal registrant and owner IDs were copied. They are not fields you edit on the sample form. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. 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