(1) vector spatial data layers in ArcInfo and ArcView data formats for surficial geologic units and contacts, loess thickness contours, cross-section line locations, and data points for stratigraphic test holes, outcrops, ISGS field notes, water wells, and engineering borings;
(2) raster data layers including the USGS DRG for the Alton quadrangle and a georeferenced TIFF image of the quadrangle portion of the final published map;
(3) JPEG images of information from the final published map including all of the explanatory text, reference text, materials descriptions, lithostratigraphic units and interpretations, three photographs, two cross-sections, and two figures depicting clay and illite contents in the Glasford Formation;
(4) metadata in several FGDC compliant formats for all spatial layers;
(5) an ArcView project file (.apr) and associated legend files (.avl); and
(6) a word processing document containing the map author's detailed notes regarding data points.
The vector data include name and modifier for geologic unit, map symbol, a qualitative statement on the relative accuracy of the mapped location of unit boundaries, loess thickness contour values, clay content of the Glasford Formation, the percentage of illite in the clay mineral fraction of the Glasford, magnetic susceptibility, and the soil horizon sampled.
Vector data are in the geographic coordinate system, decimal degrees, NAD83. Raster data are in the UTM coordinate system, zone 15, meters, NAD27.
For a detailed list of the files included in the data product, see the Supplemental_Information section.
The data were published in 1999 on an ISGS Illinois Geologic Quadrangle entitled Surficial Geology Map, Alton Quadrangle (Illinois Portion) Madison County, Illinois by David Grimley. The data in this compilation do not include all the information on the published map. Refer to the published map for a complete explanation of the Quaternary geology of the Alton quadrangle.
The nominal scale is 1:24,000.
Detailed List Of Files included in the product ---------------------------------------------- Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00001 contents.dbf 17 dBase list of files in data bundle dp00001 data_pt.dbf 10 shapefile dBase component data points dp00001 data_pt.prj 1 shapefile projection component data points dp00001 data_pt.shp 4 shapefile data points dp00001 data_pt.shp.xml 18 shapefile metadata component for ArcGIS 8x data points dp00001 data_pt.shx 2 shapefile component data points dp00001 drg.tfw 1 TIFF georeferencing file USGS DRG of quadrangle dp00001 drg.tif 11384 GeoTIFF USGS DRG of quadrangle dp00001 loess_ln.dbf 1 shapefile dBase component loess contours dp00001 loess_ln.prj 1 shapefile projection component loess contours dp00001 loess_ln.shp 4 shapefile loess contours dp00001 loess_ln.shp.xml 14 shapefile metadata component for ArcGIS 8x loess contours dp00001 loess_ln.shx 1 shapefile component loess contours dp00001 dp00001.apr 165 ArcView 3x project contains all spatial data layers and georeferenced images Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00001 qtgeo.tfw 1 TIFF georeferencing file georeferenced image of the mapped quad as it appears on the published map dp00001 qtgeo.tif 32862 GeoTIFF georeferenced image of the mapped quad as it appears on the published map dp00001 qtgeo.tif.xml 12 shapefile metadata component for ArcGIS 8x georeferenced image of the mapped quad as it appears on the published map dp00001 qtgeo_ln.dbf 6 shapefile dBase component geologic contacts - map boundaries dp00001 qtgeo_ln.prj 1 shapefile projection component geologic contacts - map boundaries dp00001 qtgeo_ln.shp 333 shapefile geologic contacts - map boundaries dp00001 qtgeo_ln.shp.xml 14 shapefile metadata component for ArcGIS 8x geologic contacts - map boundaries dp00001 qtgeo_ln.shx 4 shapefile component geologic contacts - map boundaries dp00001 qtgeo_py.dbf 26 shapefile dBase component geologic units dp00001 qtgeo_py.prj 1 shapefile projection component geologic units dp00001 qtgeo_py.shp 624 shapefile geologic units dp00001 qtgeo_py.shp.xml 14 shapefile metadata component for ArcGIS 8x geologic units dp00001 qtgeo_py.shx 2 shapefile component geologic units dp00001 readme.htm 18 ASCII text imbedded in HTML describes this data bundle dp00001 xs_ln.dbf 1 shapefile dBase component cross-section location and designation dp00001 xs_ln.prj 1 shapefile projection component cross-section location and designation dp00001 xs_ln.shp 1 shapefile cross-section location and designation dp00001 xs_ln.shp.xml 14 shapefile metadata component for ArcGIS 8x cross-section location and designation dp00001 xs_ln.shx 1 shapefile component cross-section location and designation Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00001/avlegend data_pt.avl 4 ArcView 3x legend data point legend dp00001/avlegend loess_ln.avl 2 ArcView 3x legend loess contour legend dp00001/avlegend qtgeo_ln.avl 4 ArcView 3x legend geologic contacts and boundaries legend dp00001/avlegend qtgeo_py.avl 6 ArcView 3x legend geologic units legend dp00001/avlegend xs_ln.avl 2 ArcView 3x legend cross-section legend Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00001/covers data_pt.e00 24 ArcInfo coverage in export/interchange format data points dp00001/covers loess.e00 18 ArcInfo coverage in export/interchange format loess contours dp00001/covers qtgeo.e00 985 ArcInfo coverage in export/interchange format geologic units and contacts dp00001/covers xs_ln.e00 4 ArcInfo coverage in export/interchange format cross-section location and designation Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00001/images acknowlg.jpg 118 JPEG/JFIF image acknowledgement text from the published map dp00001/images browse_l.jpg 356 JPEG/JFIF image large browse graphic dp00001/images browse_m.jpg 325 JPEG/JFIF image reduced resolution image of the mapped quad as it appears on the published map dp00001/images browse_s.jpg 10 JPEG/JFIF image small browse graphic dp00001/images explain.jpg 468 JPEG/JFIF image geological explanation from published map dp00001/images figure1.jpg 135 JPEG/JFIF image fig. 1 from published map - clay content of Glasford Formation till dp00001/images figure2.jpg 139 JPEG/JFIF image fig. 2 from published map - illite content of Glasford Formation till dp00001/images key.jpg 75 JPEG/JFIF image key from published map - data points dp00001/images legend.jpg 567 JPEG/JFIF image legend from published map - material description and unit interpretation dp00001/images locmap.jpg 47 JPEG/JFIF image location map from published map dp00001/images methods.jpg 55 JPEG/JFIF image mapping techniques explanation from published map dp00001/images n_arrow.jpg 6 JPEG/JFIF image north arrow from published map dp00001/images photo1.jpg 149 JPEG/JFIF image photo of loess at Lohr Quarry from published map dp00001/images photo2.jpg 63 JPEG/JFIF image photo of hairpin erosion marks from published map dp00001/images photo3.jpg 133 JPEG/JFIF image photo of flooding in Alton Illinois from published map dp00001/images referenc.jpg 212 JPEG/JFIF image references from published map dp00001/images res_haz.jpg 423 JPEG/JFIF image material resources and environmental hazards explanation from published map dp00001/images xs_a.jpg 206 JPEG/JFIF image cross-section A from published map dp00001/images xs_b.jpg 149 JPEG/JFIF image cross-section B from published map Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00001/metadata data_pt.doc 190 MS Word document detailed data and descriptions of field locations and data points dp00001/metadata data_pt.htm 20 metadata in FGDC HTML outline format data point metadata dp00001/metadata data_pt.txt 16 metadata in FGDC text outline format data point metadata dp00001/metadata data_ptf.htm 20 metadata in FGDC HTML FAQ format data point metadata dp00001/metadata drg.txt 14 metadata in FGDC text outline format DRG metadata dp00001/metadata loess.htm 16 metadata in FGDC HTML outline format loess contour metadata dp00001/metadata loess.txt 12 metadata in FGDC text outline format loess contour metadata dp00001/metadata loessf.htm 16 metadata in FGDC HTML FAQ format loess contour metadata dp00001/metadata dp00001.htm 20 metadata in FGDC HTML outline format overall metadata document to describe this data bundle dp00001/metadata dp00001.txt 16 metadata in FGDC text outline format overall metadata document to describe this data bundle dp00001/metadata dp00001f.htm 19 metadata in FGDC HTML FAQ format overall metadata document to describe this data bundle dp00001/metadata qtgeo.htm 18 metadata in FGDC HTML outline format geological units and contacts metadata dp00001/metadata qtgeo.txt 14 metadata in FGDC text outline format geological units and contacts metadata dp00001/metadata qtgeof.htm 16 metadata in FGDC HTML FAQ format geological units and contacts metadata dp00001/metadata qtgeotff.htm 14 metadata in FGDC HTML FAQ format metadata for GeoTIFF of mapped quad from published map dp00001/metadata qtgeotif.htm 16 metadata in FGDC HTML outline format metadata for GeoTIFF of mapped quad from published map dp00001/metadata qtgeotif.txt 12 metadata in FGDC text outline format metadata for GeoTIFF of mapped quad from published map dp00001/metadata xs_ln.htm 16 metadata in FGDC HTML outline format cross-section line metadata dp00001/metadata xs_ln.txt 12 metadata in FGDC text outline format cross-section line metadata dp00001/metadata xs_lnf.htm 16 metadata in FGDC HTML FAQ format cross-section line metadata
Illinois State Geological Survey, 2002, Surficial Geology of the Alton 7.5-minute Quadrangle (Illinois portion), Illinois - ISGS Digital Data Compilation - Expanded Version: ISGS Digital Database dp00001, Illinois State Geological Survey, Champaign, Illinois.This is part of the following larger work.Online Links:
- Illinois Natural Resources Geospatial Data Clearinghouse Web Site, Illinois Geologic Quadrangles digital data distribution component <URL:http://www.isgs.uiuc.edu/nsdihome/browse/igqs/index.htm>
Grimley, David A. , 1999, Surficial Geology Map, Alton Quadrangle (Illinois portion), Madison County, Illinois: Illinois Geologic Quadrangle (IGQ) Alton SG, Illinois State Geological Survey, Champaign, Illinois.
Illinois State Geological Survey
GIS Database Administrator
615 East Peabody Drive
Champaign, Illinois 61820
USA
217-333-4747 (voice)
isgs@isgs.uiuc.edu
- Hours_of_Service: 8:00 a.m. - 5:00 p.m. Central Time, Monday-Friday
- Contact_Instructions:
- When contacting us, please have this metadata file readily available so we can identify the data set of interest and the individual most appropriate to assist you.
This data compilation is intended to provide a regional overview of the extent of Quaternary geologic materials in the Alton quadrangle. The data are appropriate regional thematic analysis. The data are not appropriate as a geodetic or engineering base, nor do they replace the need for detailed site-specific studies.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints:
- Reproduction or redistribution of copyrighted digital data sets or products derived therefrom outside of licensee organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without the permission of DNR.
Any hardcopies utilizing DNR data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent DNR data sets, nor to imply that changes they made were approved by DNR.
These data are not to be used for commercial profit.
These data should not be used at scales greater than 1:24,000.
Illinois State Geological Survey
GIS Database Administrator
615 East Peabody Drive
Champaign, Illinois 61820
USA
217-333-4747 (voice)
isgs@isgs.uiuc.edu
- Hours_of_Service: 8:00 a.m. - 5:00 p.m., Central Time, Monday-Friday
- Contact_Instructions:
- When contacting us, please have this metadata file readily available so we can identify the data set of interest and the individual most appropriate to assist you.
The Illinois Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of DNR, no warranty, expressed or implied, is made by DNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.In no event shall the DNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by DNR.
The GIS data can be used in any GIS software compatible with the ESRI shape file (.shp) or coverage export file (.e00) formats. Most Internet browsers and graphics software are compatible with the TIFF and JPEG image formats. Other digital files in the product are compatible with typical PC desktop software.It is assumed that those who wish to download, unzip and use these data are technically proficient in using the Internet, file zipping software, and GIS software. The ISGS will entertain questions about the data, but will not provide support of any kind in regard to the use of the Internet or any particular software package.
Illinois State Geological Survey
GIS Database Administrator
615 East Peabody Drive
Champaign, Illinois 61820
USA
217-333-4747 (voice)
isgs@isgs.uiuc.edu
- Hours_of_Service: 8:00 a.m. - 5:00 p.m. Central Time, Monday-Friday
- Contact_Instructions:
- When contacting us, please have this metadata file readily available so we can identify the data set of interest and the individual most appropriate to assist you.
