GeMS — Appendices

Appendix 1 - Terms and Definitions for the GeoMaterial and GeoMaterialConfidence Fields

Scope and Intent
GeoMaterial Terms
GeoMaterialConfidence Terms

Appendix 2 - Optional Database Elements

Cross Sections (Feature Datasets)
Correlation of Map Units (Feature Dataset)
MiscellaneousMapInformation (Nonspatial Table)
StandardLithology (Nonspatial Table)

Appendix 3 - Parsing a Description of Map Units (DMU) into the DescriptionOfMapUnits Table and the HierarchyKey Field

The DescriptionOfMapUnits Table
The HierarchyKey Field

Appendix 4 - Frequently Asked Questions (FAQs)
Appendix 5 - Changes from NCGMP09 v.1.1 to GeMS

Citation

U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema)—A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org/10.3133/tm11B10.