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Service Description: This map is a digital elevation model of the bedrock surface at 3× vertical exaggeration. In regions that have a cover of Pleistocene glacial drift, the map uses the surface of the unconformity between the drift and the bedrock surface. In places outside the cover of Pleistocene glacial drift, it corresponds to a subdued version of the ground surface or to the ground surface itself. The map emphasizes the effect of the Pleistocene glaciations (see Map 3), which completely altered the drainage patterns in Illinois and Indiana. The apparently smoother surface in Missouri is an artifact of the lower data density in the map coverage from Missouri. The bedrock surface in Missouri is actually just as rugged as that in the other three states.
Map Name: Bedrock Topography
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Description: This map is a digital elevation model of the bedrock surface at 3× vertical exaggeration. In regions that have a cover of Pleistocene glacial drift, the map uses the surface of the unconformity between the drift and the bedrock surface. In places outside the cover of Pleistocene glacial drift, it corresponds to a subdued version of the ground surface or to the ground surface itself. The map emphasizes the effect of the Pleistocene glaciations (see Map 3), which completely altered the drainage patterns in Illinois and Indiana. The apparently smoother surface in Missouri is an artifact of the lower data density in the map coverage from Missouri. The bedrock surface in Missouri is actually just as rugged as that in the other three states.
Copyright Text: Illinois State Geological Survey, Prairie Research Institute, Univeristy of Illinois Urbana-Champaign
Spatial Reference:
PROJCS["Earthscope",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["false_easting",0.0],PARAMETER["false_northing",0.0],PARAMETER["central_meridian",-88.8205],PARAMETER["standard_parallel_1",37.61985],PARAMETER["standard_parallel_2",40.8796],PARAMETER["latitude_of_origin",39.2497],UNIT["Meter",1.0]]
Single Fused Map Cache: false
Initial Extent:
XMin: -727425.9400334186
YMin: -259481.18458701385
XMax: 718639.0644756143
YMax: 623121.1423364461
Spatial Reference: PROJCS["Earthscope",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["false_easting",0.0],PARAMETER["false_northing",0.0],PARAMETER["central_meridian",-88.8205],PARAMETER["standard_parallel_1",37.61985],PARAMETER["standard_parallel_2",40.8796],PARAMETER["latitude_of_origin",39.2497],UNIT["Meter",1.0]]
Full Extent:
XMin: -592741.8414446601
YMin: -368012.22482213285
XMax: 609452.2615847959
YMax: 378015.3329763161
Spatial Reference: PROJCS["Earthscope",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["false_easting",0.0],PARAMETER["false_northing",0.0],PARAMETER["central_meridian",-88.8205],PARAMETER["standard_parallel_1",37.61985],PARAMETER["standard_parallel_2",40.8796],PARAMETER["latitude_of_origin",39.2497],UNIT["Meter",1.0]]
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Bedrock Topography
Author: Digitally compiled by Curtis C. Abert, Stephen Marshak, and Timothy H. Larson
Comments: This map is a digital elevation model of the bedrock surface at 3× vertical exaggeration. In regions that have a cover of Pleistocene glacial drift, the map uses the surface of the unconformity between the drift and the bedrock surface. In places outside the cover of Pleistocene glacial drift, it corresponds to a subdued version of the ground surface or to the ground surface itself. The map emphasizes the effect of the Pleistocene glaciations (see Map 3), which completely altered the drainage patterns in Illinois and Indiana. The apparently smoother surface in Missouri is an artifact of the lower data density in the map coverage from Missouri. The bedrock surface in Missouri is actually just as rugged as that in the other three states.
Subject: Bedrock Topography
Category:
Keywords: geology,topography,bedrock,contours,shaded relief,elevation,Missouri,Illinois,Indiana,Kentucky
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: true
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON
Supports Query Data Elements:
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
Child Resources:
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