macrostrat.org

What it is

Macrostrat is a specialized platform focused on the exploration, integration, and analysis of geological data. It brings together 1,400 regional stratigraphic columns, 33,903 rock units, and more than 2.5 million geological map polygons, forming what is currently the world’s largest homogenized geological map database and providing highly valuable infrastructure for geoscience research.

Core dimensions

• Features and use cases: The platform’s core value lies in geological data search and deep integration. Its data-processing pipeline links geological map polygons with stratigraphic columns, external stratigraphic name dictionaries, and geologic time intervals, thereby increasing the value of raw map data. It also supports cross-searching across dimensions such as paleontology and paleogeography.
• API/SDK: Macrostrat provides a v2 RESTful API with a clear interface design, covering rich routes such as /columns for stratigraphic columns, /units for rock units, /fossils for paleontology, and /geologic_units/map for geological maps. It also offers a dedicated /mobile route to optimize data delivery for mobile clients, but there is no official SDK.
• Open source and pricing: The API data is open under the CC-BY 4.0 license. Users can use it for free, but attribution and citation of the relevant papers are required. No commercial paid plans or self-hosting options are mentioned in the documentation.
• Integrations and ecosystem: Macrostrat is deeply integrated with the Paleobiology Database and incorporates paleogeographic reconstruction data from Wright et al. (2013). Its ecosystem is highly focused on the academic geoscience community.

Pros and cons

Pros: Massive data volume with a high degree of homogenization, greatly reducing the effort needed for geological data cleaning; rich and freely available API endpoints; dedicated optimization for mobile data delivery.
Cons: The explicitly covered regions are currently limited to North America, the Caribbean, New Zealand, and the deep sea, so global coverage remains limited; the professional barrier is very high, making the domain logic difficult for developers without a geology background; lacks commercial SLA guarantees.

Who it is for

Macrostrat is mainly aimed at geologists, paleontologists, geoscience researchers, and GIS developers. It is especially suitable for researchers and engineers who need to build geology-related mobile applications or conduct stratigraphic data mining.

Access from China and alternatives

Access from China is unknown. Academic websites are usually directly accessible, but this should be tested in practice. There are no commercial payment requirements. As alternatives, OneGeology or geological web services provided by USGS may be considered, though Macrostrat has distinctive advantages in data homogenization and API usability.