(1) vector spatial data layers in ArcView data formats for surficial geologic units and contacts, cross-section line locations and data points for stratigraphic test cores, outcrops, water wells and engineering borings;
(2) JPEG browse images from the published map
(3) metadata in several FGDC compliant formats for all spatial layers
The vector data include name for geologic unit, map symbol, and a line-type indicator.
Vector data are in the geographic coordinate system, decimal degrees, NAD83.
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 (Illinois Portion) entitled Surficial Geology Map, Grafton 7.5-minute Quadrangle (Illinois Portion), Jersey and Calhoun Counties, 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 Grafton Quadrangle (Illinois Portion).
The nominal scale is 1:24,000.
Detailed List Of Files included in the product ---------------------------------------------- Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------ dp00006 data_pt.dbf 2 shapefile dBase component data points dp00006 data_pt.prj 1 shapefile projection component data points dp00006 data_pt.shp 1 shapefile data points dp00006 data_pt.shx 1 shapefile component data points dp00006 qtgeo_ln.dbf 9 shapefile dBase component geologic contacts - map boundaries dp00006 qtgeo_ln.prj 1 shapefile projection component geologic contacts - map boundaries dp00006 qtgeo_ln.shp 187 shapefile geologic contacts - map boundaries dp00006 qtgeo_ln.shx 3 shapefile component geologic contacts - map boundaries dp00006 qtgeo_py.dbf 14 shapefile dBase component geologic units dp00006 qtgeo_py.prj 1 shapefile projection component geologic units dp00006 qtgeo_py.shp 343 shapefile geologic units dp00006 qtgeo_py.shx 2 shapefile component geologic units dp00006 readme.htm 16 ASCII text imbedded in HTML describes this data bundle dp00006 xs_ln.dbf 1 shapefile dBase component cross-section location and designation dp00006 xs_ln.prj 1 shapefile projection component cross-section location and designation dp00006 xs_ln.shp 1 shapefile cross-section location and designation dp00006 xs_ln.shx 1 shapefile component cross-section location and designation Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00006/images browse_l.jpg 480 JPEG/JFIF image large browse graphic dp00006/images browse_m.jpg 442 JPEG/JFIF image reduced resolution image of the mapped quad as it appears on the published map dp00006/images browse_s.jpg 3 JPEG/JFIF image small browse graphic dp00006/images locmap.jpg 42 JPEG/JFIF image location map from published map Folder Filename Size(kb) Filetype Description ----------------- -------------- -------- --------------------------------------------- ------------------------------------------------------------- dp00006/metadata data_pt.htm 16 metadata in FGDC HTML outline format data point metadata dp00006/metadata dp00006s.htm 25 metadata in FGDC HTML outline format overall metadata document to describe this data bundle dp00006/metadata dp00006sf.htm 25 metadata in FGDC HTML FAQ format overall metadata document to describe this data bundle dp00006/metadata qtgeo.htm 17 metadata in FGDC HTML outline format geological units and contacts metadata dp00006/metadata xs_ln.htm 16 metadata in FGDC HTML outline format cross-section line metadata
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.
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.
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.