Dataset Identification:
Resource Abstract:
- description: The hydrogeologic framework for the Lake Michigan Basin model was developed by grouping the bedrock geology of
the study area into hydrogeologic units on the basis of the functioning of each unit as an aquifer or confining layer within
the basin. Available data were evaluated based on the areal extent of coverage within the study area, and procedures were
established to characterize areas with sparse data coverage. Top and bottom altitudes for each hydrogeologic unit were interpolated
in a geographic information system for input to the model and compared with existing maps of subsurface formations. Fourteen
bedrock hydrogeologic units, making up 17 bedrock model layers, were defined, and they range in age from the Jurassic Period
red beds of central Michigan to the Cambrian Period Mount Simon Sandstone. Each hydrogeologic unit is referred to as its model
layer number as represented in the report U.S. Geological Survey Scientific Report 2009-5060 (SIR2009-5060). They are listed
below for reference as to the model layer number, and the hydrogeoloigc unit name. Dataset values represent the bottom of
the layer. LSD Land surface L1_3 Quaternary unit (Bottom of Quaternary unit is Layer 3 in the model) L4 Jurassic unit L5 Upper
Pennsylvanian unit L6 Lower Pennsylvanian unit L7 Michigan Formation unit L8 Marshall Formation unit L9 Devonian-Mississippian
unit L10_12 Silurian-Devonian unit (Bottom of Silurian-Devonian unit is Layer 12 in the model) L13 Maquoketa Formation unit
L14 Sinnipee Formation unit L15 St. Peter Formation unit L16 Prairie du Chien-Franconia unit L17 Ironton-Galesville unit L18
Eau Claire unit L19_20 Mt Simon Formation unit (Bottom of Mt Simon Formation unit is Layer 20 in the model) The Lake Michigan
Basin groundwater model is discretized into a grid of 391 by 261 cells. The model has 20 layers: 3 that simulate the glacial
and unconsolidated sediments and 17 that simulate the bedrock units. The model provides additional detail in the area of greatest
interest, in this case, the Lake Michigan Basin, by use of smaller grid spacing in the innermost model domain compared with
the grid spacing at the model boundaries. The smallest interior grid cells are 5,000 by 5,000 ft. At the model boundaries,
the size of grid cells reaches approximately 68,930 ft (13 mi) from north to south by 116,490 ft (22 mi) from east to west.
The grid cells each have values for the altitude to the bottom of each layer. The layer numbers are from top to bottom of
the aquifer system. Three hydrogeologic units are represented by the multiple layers; abstract: The hydrogeologic framework
for the Lake Michigan Basin model was developed by grouping the bedrock geology of the study area into hydrogeologic units
on the basis of the functioning of each unit as an aquifer or confining layer within the basin. Available data were evaluated
based on the areal extent of coverage within the study area, and procedures were established to characterize areas with sparse
data coverage. Top and bottom altitudes for each hydrogeologic unit were interpolated in a geographic information system for
input to the model and compared with existing maps of subsurface formations. Fourteen bedrock hydrogeologic units, making
up 17 bedrock model layers, were defined, and they range in age from the Jurassic Period red beds of central Michigan to the
Cambrian Period Mount Simon Sandstone. Each hydrogeologic unit is referred to as its model layer number as represented in
the report U.S. Geological Survey Scientific Report 2009-5060 (SIR2009-5060). They are listed below for reference as to the
model layer number, and the hydrogeoloigc unit name. Dataset values represent the bottom of the layer. LSD Land surface L1_3
Quaternary unit (Bottom of Quaternary unit is Layer 3 in the model) L4 Jurassic unit L5 Upper Pennsylvanian unit L6 Lower
Pennsylvanian unit L7 Michigan Formation unit L8 Marshall Formation unit L9 Devonian-Mississippian unit L10_12 Silurian-Devonian
unit (Bottom of Silurian-Devonian unit is Layer 12 in the model) L13 Maquoketa Formation unit L14 Sinnipee Formation unit
L15 St. Peter Formation unit L16 Prairie du Chien-Franconia unit L17 Ironton-Galesville unit L18 Eau Claire unit L19_20 Mt
Simon Formation unit (Bottom of Mt Simon Formation unit is Layer 20 in the model) The Lake Michigan Basin groundwater model
is discretized into a grid of 391 by 261 cells. The model has 20 layers: 3 that simulate the glacial and unconsolidated sediments
and 17 that simulate the bedrock units. The model provides additional detail in the area of greatest interest, in this case,
the Lake Michigan Basin, by use of smaller grid spacing in the innermost model domain compared with the grid spacing at the
model boundaries. The smallest interior grid cells are 5,000 by 5,000 ft. At the model boundaries, the size of grid cells
reaches approximately 68,930 ft (13 mi) from north to south by 116,490 ft (22 mi) from east to west. The grid cells each have
values for the altitude to the bottom of each layer. The layer numbers are from top to bottom of the aquifer system. Three
hydrogeologic units are represented by the multiple layers
Citation
- Title Digital Polygon Model Grid of the Hydrogeologic Framework of Bedrock Units for a Simulation of Groundwater Flow for the Lake
Michigan Basin.
-
- creation Date
2018-05-21T12:15:48.471821
Resource language:
Processing environment:
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Metadata data stamp:
2018-08-06T19:48:12Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T19:48:12Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:1788d983-0667-4e5d-9a97-0094850851dc
Metadata record format is ISO19139 XML (MD_Metadata)