Macrostrat builds on data published and maintained by others:
- Geologic surveys publish most of the maps Macrostrat integrates. In the United States, the USGS National Geologic Map Database is a primary source of maps and metadata, and its Geolex lexicon defines many of the stratigraphic concepts names are linked to (see Geologic lexicon).
- The International Commission on Stratigraphy maintains the international chronostratigraphic chart, which anchors Macrostrat's timescale and Age model.
- EarthByte and GPlates provide plate rotation models that Macrostrat uses, through its Corelle rotation service, to place maps and columns in their positions in deep time.
- xDD provides access to the geologic literature, the source of Macrostrat's Knowledge graph.
Systems and organizations
- xDD
Literature mentions of geologic units and stratigraphic names, linked from unit and lexicon pages.
- EarthByte and GPlates
Plate rotation models and paleogeographic reconstructions used to place maps and columns in deep time.
- USGS National Geologic Map Database
Source maps and metadata for much of the United States coverage.
- International Commission on Stratigraphy
The international chronostratigraphic chart, the backbone of Macrostrat's time model.
