Wilma B. Alemán González, 2010, Karst Map of Puerto Rico: U.S. Geological Survey Open-File Report 2010-1104, U.S. Geological Survey, Reston, VA.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
The map projection used is Polyconic.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.001232
Ordinates (y-coordinates) are specified to the nearest 0.001232
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
Sequential unique whole numbers that are automatically generated.
| Value | Definition |
|---|---|
| Q | Crossbedded Calcarenite (eolianite) (Holocene),: Karstification has occurred at many places in the calcarite formed by induration of sand dunes that accumulated during Quaternary time near the Atlantic coast of Puerto Rico. Kaye (1959a) described ridges of indurated sand dunes at various altitudes above and below sea level, and also described the solution pans and small karren spikes that have formed on the crests and sides of these features by solution |
| Tl | Limestone (Pliocene to Oligocene) |
| Tcm | Chalk and Marl (Miocene and Oligocene) |
| Tls | Limestone (Lower Tertiary) |
| K | Limestone (Cretaceous) |
| Qb | Beach Deposits (Holocene): Grayish-pink, fine - to medium-grained calcite and aragonite sand; contains no quartz or heavy-mineral grains; locally includes rubble from raised reef deposits and beachrock |
| Qbo | Boulder Deposits (Holocene): Deposits of boulders of Isla de Mona Dolomite and Lirio Limestone. Includes boulders as large as 50 m in length |
| Qr | Raised reef platform (Holocene): Fragmental grayish-orange-pink limestone composed chiefly of fossils and fossil fragments; commonly case hardened, locally somewhat chalky. Thickness ranges from 0 to at least 3 m; locally may be as thick as 10 m |
| Tli | Lirio Limestone (Miocene): Very pale orange to grayish-orange-pink fine-grained limestone, thick-bedded and very thick bedded, locally crossbedded; commonly very well indurated, perhaps as a result of surficial solution and reprecipitation; locally chalky; cavernous, most notably in lower 10 m at the periphery of Isla de Mona. Maximum exposed thickness is about 40 m |
| Tm | Isla de Mona Dolomite (Miocene): Very pale to moderate-orange-pink finely crystalline calcitic dolomite, very thick bedded, locally crossbedded; well indurated. Zones of limestone about 5 m thick occur locally at the top and about 15 m and 50 m stratigraphically below the upper contact. Base concealed by the sea. Maximum exposed thickness is about 80 m |
Positive real numbers that are automatically generated.
Positive real numbers that are automatically generated.
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 1173 |
| Resolution: | 1 |
| Value | Definition |
|---|---|
| >30m | Depth greater than 30 meters |
| Range of values | |
|---|---|
| Minimum: | 0.89969946048 |
| Maximum: | 5920.86052273000 |
| Range of values | |
|---|---|
| Minimum: | 0.01369162283 |
| Maximum: | 434681.03283200000 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 31 |
| Value | Definition |
|---|---|
| >5m | Sinkhole deeper than 5 meters, less than 30 meters |
| Range of values | |
|---|---|
| Minimum: | 5.32976412752 |
| Maximum: | 156047.85095399999 |
| Range of values | |
|---|---|
| Minimum: | 0.72157528423 |
| Maximum: | 362221203.84799998999 |
703-648-6932 (voice)
703-648-6953 (FAX)
waleman@usgs.gov
This map will serve as the basis for the Puerto Rico portion of a new national karst map currently being compiled by the U.S. Geological Survey. In addition, this product serves as a standalone, citable source of digital karst data for Puerto Rico.
Monroe, W.H., 1976, The karst landforms of Puerto Rico: U.S. Geological Survey Professional Paper 899, U.S. Government Printing Office, Washington, D.C..
Brigss, R.P., and Seiders, V.M., 1972, Geologic map of the Isla de Mona quadrangle, Puerto Rico: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-718, U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 1951, Puerto Rico.
Person who carried out this activity:
703-648-6932 (voice)
703-648-6953 (FAX)
waleman@usgs.gov
Monroe, W.H., 1976, The karst landforms of Puerto Rico: U.S. Geological Survey Professional Paper 899, United States Government Printing Office, Washington, D.C..
Briggs, R.P, and Seiders, V.M., 1972, Geologic Map of the Isla de Mona quadrangle, Puerto Rico: U. S. Geological Survey Miscellaneous Geologic Investigations Map I-718, U.S. Geological Survey, Reston, VA.
All polygon atrtributes were checked for correct values against original map data by the technical reviewers.
These data were created by delineating the boundaries from scanned paper maps at scales of 1:20,000 and 1:140,000 and then plotted over a base topographic map at a scale of 1:120,000. All 3 maps were of different map projections and some spatial distortions have occurred in the reprojection and registration of the data. Offsets of as much as 100 meters between the karst data and base map topographic features may occur. For optimal presentation, this open-file map is shown at a scale of 1:140,000.
Polygon coverages were queried to screen for empty or inconsistent values. Line geometry is topologically clean.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints: None
703-648-6932 (voice)
703-648-6953 (FAX)
waleman@usgs.gov
USGS Open-File Report 2010-1104
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.
| Data format: | Geologic units and karst features in format Shapefile (version 1.0) Size: 1.0 megabytes |
|---|---|
| Network links: |
<https://pubs.usgs.gov/of/2010/1104/karstmap.zip> |
703-648-6932 (voice)
703-648-6953 (FAX)
waleman@usgs.gov