Donald S. Sweetkind
Melissa M. Masbruch
20191011
Digital subsurface data from USGS Evolution of Sedimentary Basin studies of the San Juan basin and adjacent areas, Utah, Colorado, Arizona, and New Mexico
GeoDatabase
https://doi.org/10.5066/P95ZHI24
US Geological Survey
1993
Stratigraphy, structure, and paleogeography of Pennsylvanian and Permian rocks, San Juan Basin and adjacent areas, Utah, Colorado, Arizona, and New Mexico
publication
Evolution of sedimentary basins: San Juan Basin
Bulletin 1808
n/a
US Geological Survey
https://pubs.er.usgs.gov/publication/b1808
https://doi.org/10.3133/b1808O
The San Juan basin is a significant physical and structural element in the southeastern part of the Colorado Plateau physiographic province. The San Juan basin is in New Mexico, Colorado, Arizona, and Utah and has an area of about 21,600 square miles. The basin is about 140 miles wide and about 200 miles long. In the 1980’s and 1990’s, the U.S. Geological Survey's Evolution of Sedimentary Basins—San Juan basin study produced several reports on aspects of the stratigraphy and sedimentology of the basin. A report of the stratigraphy, structure, and paleogeography of Pennsylvanian and Permian rocks included 18 plates of contoured elevation and thickness data for various units (Huffman and Condon, 1993).
This digital dataset contains spatial datasets corresponding to selected contour maps from the Evolution of Sedimentary Basins—San Juan basin study. The data help define the elevation, thickness, and extent of principal stratigraphic units of the basin. The digital data describe the following stratigraphic units: the Molas Formation, the Rico Formation, the elevation of the top of Permian strata, and the estimated thickness of Permian and Pennsylvanian rocks. Digital data for each unit are contained in individual features classes within a geodatabase (also saved as individual shapefiles). Feature classes have a single attribute, either elevation or thickness, that represents the contoured value. Contoured values are given in feet, to maintain consistency with the original publication, and in meters.
This digital dataset was created as part of a U.S. Geological Survey study to be used as digital geologic input data for subsurface mapping and three-dimensional geologic framework modeling of the Intermountain West. The elevation, thickness, and extent of subsurface geologic units are required to define the geologic layering in any digital geologic framework model; these data, derived from previous USGS studies in the region, provide a fundamental starting point. The intended uses of this dataset include, but are not limited to, natural resource modeling, mapping, and visualization applications.
- DATASETS INCLUDED IN THIS DATA RELEASE –
Bull1808O_Contours.gdb: geodatabase of contour line data
Bull1808O _Shapefiles.zip: zip file containing shapefile versions of feature classes in the geodatabase
DataSources_1808O.xlsx non-spatial table of data provenance, also distributed as a comma-separated (csv) file
Glossary_1808O.xlsx non-spatial table, glossary of terms, also distributed as a comma-separated (csv) file
2017
Publication date
None planned
-109.546386
-106.324723
37.578673
34.999696
ISO 19115 Topic Category
geoscientificInformation
elevation
USGS Thesaurus
structure contours
stratigraphic thickness
USGS Metadata Identifier
USGS:5d8e31cce4b0c4f70d0cc479
Common geographic areas
San Juan
Lower San Juan-Four Corners
Upper Colorado
USGS Geolex (https://ngmdb.usgs.gov/Geolex/search)
Molas Formation
Rico Formation
International Chronostratigraphic chart (http://www.stratigraphy.org/index.php/ics-chart-timescale)
Pennsylvanian
Permian
None
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Acknowledgement of the U.S. Geological Survey and U.S. Bureau of Reclamation would be appreciated in products derived from these data.
Donald S. Sweetkind
MAILING ADDRESS
USGS, MS 980, Box 25046, Denver Federal Center
Denver
CO
80225
US
(303) 236-1828
dsweetkind@usgs.gov
Study was funded by the National Cooperative Geologic Mapping and Water Availability and Use Science Programs of the USGS.
References cited in Metadata:
Huffman, A.C. and Condon, S.M., 1993, Stratigraphy, Structure, and Paleogeography of Pennsylvanian and Permian Rocks, Evolution of Sedimentary Basins—San Juan basin: U.S. Geological Survey Bulletin 1808-O, 50 p., 18 pl.
No formal attribute accuracy tests were conducted. Verification was done by interactive on-screen review.
Map elements and Topology were checked if needed.
Dataset is considered complete for the information presented.
A formal accuracy assessment of the horizontal positional information in the dataset has not been conducted.
A formal accuracy assessment of the vertical positional information in the dataset has not been conducted.
Feature class all A GIS was used to georectify raster images from published sources. Structure contour and isopach data were digitized. The GIS was used to digitize, edit, and attribute the vector datasets.
2016
Final digital datasets and metadata were created and reviewed.
2019
Vector
String
38
NAD_1983_Contiguous_USA_Albers
29.5
45.5
-96.0
23.0
0.0
0.0
coordinate pair
0.6096
0.6096
meters
North_American_Datum_1983
GRS_1980
6378137.0
298.257222101
- DATASETS INCLUDED IN THIS DATA RELEASE –
Bull1808O_Contours.gdb: geodatabase of contour line and polygon data
Bull1808O _Shapefiles.zip: zip file containing shapefile versions of feature classes in the geodatabase
DataSources_1808O.xlsx non-spatial table of data provenance, also distributed as a comma-separated (csv) file
Glossary_1808O.xlsx non-spatial table, glossary of terms, also distributed as a comma-separated (csv) file
-----------------------------------------
Bull1808O_Contours.gdb
----------------------------------------
*****Geodatabase follows structure of GeMS feature class “Isolines”
[https://ngmdb.usgs.gov/Info/standards/GeMS/].
Not all components of the GeMS data model are utilized in this database. Only components used in construction of this database are explained in the following section.*****
FEATURE DATASET: Bull1808O_contours
----------------------------------------
The following feature classes describe unit thickness and have attribute fields as described below:
FEATURE CLASS:
Molas_thk [Line Feature]
Penn_thk [Line Feature]
Perm_thk [Line Feature]
Rico_thk [Line Feature]
DESCRIPTION OF FIELDS:
Type: Term that categorizes what line represents
THK_ft: Thickness of unit, in feet
THK_m: Thickness of unit, in meters
ValueConfidence: Half-width of the uncertainty in thickness; -9999 if value is not assigned
DataSourceID: Foreign key to DataSources table, to track provenance of each data element.
IsoValueLines_ID: Primary key. Values are unique in the database.
The following feature class describes elevation of the top of a unit and has attribute fields as described below:
FEATURE CLASS: Permian_top_elev [Line Feature]
DESCRIPTION OF FIELDS:
Type: Term that categorizes what line represents
ELEV_ft: Absolute elevation of unit, in feet
ELEV_m: Absolute elevation of unit, in meters
ValueConfidence: Half-width of the uncertainty in unit elevation; -9999 if value is not assigned
DataSourceID: Foreign key to DataSources table, to track provenance of each data element.
IsoValueLines_ID: Primary key. Values are unique in the database.
----------------------------------------
NON-SPATIAL TABLE: DataSources_1808O
DESCRIPTION OF FIELDS:
Source: Description of source
FullCitation: complete citation of publication
URL: URL link to data (at time of publication), if available
Notes: Description of how source was used or acquired
DataSource_ID: Primary key. Unique to each data entry (DAS*)
----------------------------------------
NON-SPATIAL TABLE: Glossary_1808O
DESCRIPTION OF FIELDS:
Term: Word for a concept
Definition: Definition or source of definition of term
DefinitionSourceID: Foreign key to "DataSources" non-spatial table
Glossary_ID: Primary key. Unique to each data entry (GLO*)
None
U.S. Geological Survey - ScienceBase
mailing address
Denver Federal Center, Building 810, Mail Stop 302
Denver
Colorado
80225-0046
USA
1-888-275-8747
sciencebase@usgs.gov
Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey.
Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner.
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein.
WinZipped file geodatabase and WinZipped ESRI shapefiles
10.5; 2017
ESRI 10.5 file geodatabase or ESRI shapefile. Note some information such as field names and relationship classes may be altered or removed from the source data during conversion to ESRI shapefile format.
Spatial and attribute information
https://doi.org/10.5066/P95ZHI24
None. This dataset is provided by USGS as a public service.
20200820
Donald Sweetkind
mailing address
PO Box 25046, Denver Federal Center, Mailstop 980
Denver
CO
80225
US
1-303-236-1828
dsweetkind@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
none
none