| Online link | https://geo-nsdi.er.usgs.gov/metadata/open-file/97-459/metadata.faq.html |
|---|---|
| Description | This Open-File report is a digital geologic map database. This digital map database is compiled from previously published sources combined with some new mapping and modifications in nomenclature. The geologic map database delineates map units that are |
| Originators | Yerkes, Robert F. and Campbell, Russell H. |
| Publication | U.S. Geological Survey Open-File Report 97-459 |
Each polygon is attributed with a map unit abbreviation and a formation name.
http://pubs.usgs.gov/of/2010/1104/pdf/ofr2010-1104-prkarstmap.pdf
Polygons showing extent of potentially karstic areas of Puerto Rico
| Label | Definition |
|---|---|
| OBJECTID_1 | Internal feature number. |
| Shape | Feature geometry. |
| OBJECTID | Internal feature number. |
| MAP_UNIT | Abbreviation of lithology or formation name as defined on the geologic source map. |
| Shape_Length | Length of feature in internal units. |
| Shape_Area | Area of feature in internal units squared. |
| lithology | Lithology or Formation name as defined by the geologic source map |
Polygons showing locations of sinkholes deeper than 30 meters in Puerto Rico
| Label | Definition |
|---|---|
| OBJECTID | Internal feature id, maintained by the GIS |
| DEPRESSION | Description of the sinkhole |
| Shape_Leng | Information maintained by the GIS |
| Shape_Area | Information maintained by the GIS |
Sinkholes between 5 and 30 meters depth
| Label | Definition |
|---|---|
| OBJECTID | Unique identifier for the feature, maintained by the GIS |
| DEPRESSION | Description of the feature |
| Shape_Leng | Information maintained by the GIS |
| Shape_Area | Information maintained by the GIS |