The Macrostrat tile server provides access to all of its geologic maps as tiled rasters and vectors. The following layers are available:
/carto/{z}/{x}/{y}.{ext}
Available as mvt or png.
The carto layer is for visualization purposes, and makes many assumptions about the relative priority of each map. The layers and scales are seamlessly blended so no scale-dependent decisions can or should be made.
Single-scale map layers are currently disabled due to performance and complexity. They will be re-enabled in a later version of the API.
/tiny/{z}/{x}/{y}.{ext}
Available as `mvt` or `png`.
All maps from the scale `tiny`. You can find a list of available maps at https://macrostrat.org/api/v2/defs/sources?scale=tiny
/small/{z}/{x}/{y}.{ext}
Available as `mvt` or `png`.
All maps from the scale `small`. You can find a list of available maps at https://macrostrat.org/api/v2/defs/sources?scale=small
/medium/{z}/{x}/{y}.{ext}
Available as `mvt` or `png`.
All maps from the scale `medium`. You can find a list of available maps at https://macrostrat.org/api/v2/defs/sources?scale=medium
/large/{z}/{x}/{y}.{ext}
Available as `mvt` or `png`.
All maps from the scale `large`. You can find a list of available maps at https://macrostrat.org/api/v2/defs/sources?scale=large
All tilesets contain two layers - units and lines. Units are the geologic map polygons, and lines are geologic line features such as faults, anticlines, and moraines.
| Field | Description |
|---|---|
map_id |
The unique identifier for a polygon |
source_id |
An integer that corresponds to the original map sources that can be found at https://macrostrat.org/api/v2/defs/sources |
name |
The name of the polygon. Usually either a stratigraphic name or lithological description |
strat_name |
The stratigraphic name of the polygon |
age |
The age indicated by the map author |
lith |
Lithologies, or lithological description |
descrip |
A description of the map unit |
comments |
Comments about the map unit |
t_int |
The Macrostrat interval ID associated with the top age of the map unit |
t_int_name |
The name of the Macrostrat interval associated with the top age of the map unit |
best_t_age |
The best top age that Macrostrat can assign to the unit based on linked resources |
b_int |
The Macrostrat interval ID associated with the bottom age of the map unit |
b_int_name |
The name of the Macrostrat interval associated with the bottom age of the map unit |
best_b_age |
The best bottom age that Macrostrat can assign to the unit based on linked resources |
color |
A hex code associated with the best containing time interval for the map unit |
| Field | Description |
|---|---|
line_id |
The unique identifier for a line feature |
source_id |
An integer that corresponds to the original map sources that can be found at https://macrostrat.org/api/v2/defs/sources |
name |
The name of the line, if available |
descrip |
A description of the line |
type |
A normalized line type (fault, fold, anticline, etc) |
direction |
A normalized direction of the line. Not commonly available. |
Macrostrat's geologic map tiles are free and open under the CC BY 4.0 International license. You are required to cite Macrostrat as well as the original data providers when applicable (the reference corresponding to the source_id of each feature).