MacrostratThis is the homepage of Macrostrat's geological lexicons, which are assembled from many data sources including Canada's WebLex, the USGS's Geolex, and other sources. The lexicon is continually updated in partnership with researchers and data providers.
1,534 columns
9,164 packages
35,481 units
1,245,645 measurements
Dictionaries
Stratigraphic names
Names of rock units, organized hierarchically and concepts that capture relationships between differently-named rock unitsIntervals
Time intervalsTimescales
Continuous representations of relative geologic timeLithologies
Names of geologic materialsLithology attributes
Names and descriptions of lithology attributesEnvironments
Depositional environments and formation mechanismsEconomics
Economic uses of geologic materialsMinerals
Mineral names and formulasStructures
Names and descriptions of geologic structuresUnits
Names and descriptions of geologic unitsFossils
Fossil names and descriptions (via the Paleobiology Database)Sift, Macrostrat's legacy lexicon app, is still available for use as it is gradually brought into this new framework.
