Bedrock_Contours_Maumee_Basin_IGS_IN: Bedrock Topography, 2012 (Indiana Geological Survey, 1:200,000, ESRI Shapefile)

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Indiana Geological Survey (Data processor)
Originator:
Shawn Naylor, Center for Geospatial Data Analysis (Data processor)
Originator:
Andrew Gustin, Center for Geospatial Data Analysis (Data processor)
Originator: Ben Sperl, Center for Geospatial Data Analysis (Data processor)
Publication_Date: 20121120
Title:
Bedrock_Contours_Maumee_Basin_IGS_IN: Bedrock Topography, 2012 (Indiana Geological Survey, 1:200,000, ESRI Shapefile)
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Bloomington, Indiana
Publisher: Indiana Geological Survey
Other_Citation_Details:
This data set was compiled from a combination of well record data and contoured bedrock surface data gathered from multiple sources, including the Indiana Department of Natural Resources, Ohio Geological Survey, Michigan Department of Environmental Quality, and Indiana Geological Survey.
Online_Linkage: None
Description:
Abstract:
Bedrock_Contours_Maumee_Basin_IGS_IN is a contoured depiction of bedrock topography in the Maumee watershed region of northeast Indiana. Contours are represented by polylines each with a single value that is bedrock elevation in feet above sea level.
Purpose:
This data set was created with the purpose of providing bedrock topography data for the Maumee watershed region.
Supplemental_Information:
The contour features in Bedrock_Contours_Maumee_Basin_IGS_IN were derived from a raster bedrock topography model that was generated using data from the Indiana Department of Natural Resources, Ohio Geological Survey, Michigan Department of Environmental Quality, and Indiana Geological Survey.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121120
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -85.313393
East_Bounding_Coordinate: -84.802618
North_Bounding_Coordinate: 41.766743
South_Bounding_Coordinate: 40.604640
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificinformation
Theme:
Theme_Keyword_Thesaurus: IGS Metadata Keyword Thesaurus
Theme_Keyword: Indiana Geological Survey (IGS)
Theme_Keyword: Bedrock Topography
Theme_Keyword: Bedrock Surface
Theme_Keyword: Maumee
Theme_Keyword: Geology
Theme_Keyword: Contours
Theme_Keyword: Bedrock Elevation
Place:
Place_Keyword_Thesaurus: IGS Metadata Keyword Thesaurus
Place_Keyword: Indiana
Place_Keyword: Maumee
Place_Keyword: Adams County
Place_Keyword: Allen County
Place_Keyword: DeKalb County
Place_Keyword: LaGrange County
Place_Keyword: Noble County
Place_Keyword: Steuben County
Place_Keyword: Wells County
Place_Keyword: Whitley County

Access_Constraints:
This file is available to anyone, but access may be contingent on written request, specific terms relevant to the agency or person making the request, and/or current freedom of information statutes in the state of Indiana.
Use_Constraints:
DATA DISCLAIMER:

This data set was compiled by Indiana University, Indiana Geological Survey, using data believed to be accurate; however, a degree of error is inherent in all data. This product is distributed "AS-IS" without warranties of any kind, either expressed or implied, including but not limited to warranties of suitability to a particular purpose or use. No attempt has been made in either the design or production of these data to define the limits or jurisdiction of any federal, state, or local government. These data are intended for use only at the published scale or smaller and are for reference purposes only. They are not to be construed as a legal document or survey instrument. A detailed on-the-ground survey and historical analysis of a single site may differ from these data.

CREDIT:

It is requested that the dataset be cited in any products generated from this data. The following source citation should be included: [Bedrock_Contours_Maumee_Basin_IGS_IN: Bedrock Topography, 2012 (Indiana Geological Survey, 1:200,000, ESRI Shapefile)].

WARRANTY:

Indiana University, Indiana Geological Survey warrants that the media on which this product is stored will be free from defect in materials and workmanship for ninety (90) days from the date of acquisition. If such a defect is found, return the media to Publication Sales, Indiana Geological Survey, 611 North Walnut Grove, Bloomington, Indiana 47405 2208, and it will be replaced free of charge.

LIMITATION OF WARRANTIES AND LIABILITY:

Except for the expressed warranty above, the product is provided "AS IS", without any other warranties or conditions, expressed or implied, including, but not limited to, warranties for product quality, or suitability to a particular purpose or use. The risk or liability resulting from the use of this product is assumed by the user. Indiana University, Indiana Geological Survey shares no liability with product users indirect, incidental, special, or consequential damages whatsoever, including, but not limited to, loss of revenue or profit, lost or damaged data or other commercial or economic loss. Indiana University, Indiana Geological Survey is not responsible for claims by a third party. The maximum aggregate liability to the original purchaser shall not exceed the amount paid by you for the product.

Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 7636
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: IGSinfo@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Native_Data_Set_Environment: ESRI ArcGIS 10.0, Shapefile


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Elevation values for point data used in the creation of this data set inherit the error of the well logs from which they were derived.

Contour lines were drawn at various scales and contain attribute error concordant with the scale at which they were drawn as well as the availability and quality of the point data from which they were interpreted.

The accuracy of elevation values that were manually assigned to digitized streamlines is subject to the judgement of IGS personnel and the quality of the data used to infer said elevation values.

Logical_Consistency_Report:
Wells (point data) were removed for the following reasons: 1) Bedrock elevation values anomalous to their surroundings (i.e. too extreme to be credible given local bedrock topography) 2) Untenable well logs (e.g. overgeneralization of vertical record, insufficient data, and problematic lithology descriptions)

Completeness_Report:
Scarce point density, most notably in DeKalb, Noble, Steuben, and LaGrange counties, caused a heavier reliance on contour data in those areas. In addition, completeness of well logs - how much detail was recorded by drillers during well construction - also affects the attribute accuracy of this data set.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal positional accuracy of this data set is no better than that of the source material.

Contour lines were drawn at various scales and contain horizontal positional error concordant with the scale at which they were drawn as well as the availability and quality of the point data from which they were interpreted.

Some of the water well point data used in the creation of this data set were not GPS located on site. The following is excerpted from metadata provided by the IDNR and describes the horizontal accuracy for water well point data lacking field-collected GPS coordinates:

"Locations based only on the street address, driving directions, or other location information provided on the well record are considered unlocated records and have no x, y coordinates, only township, range, section, and quarter-quarter-quarter sections (if estimated).

"The x, y coordinates are from the calculated centroid of the smallest possible individual polygon that matched the water well location data. Some records have no quarter sections and/or some of the polygons could not be subdivided, so the centroid of the section was used for those water well records. These are the least accurate coordinates and in a regular one-mile square section the x, y coordinates will generally be within a half-mile of the office located section, on irregular sections, the distance may be greater. The best location values are on the records with quarter-quarter-quarter sections and typically will be within 150 meters of the office located quarters.

"A small number of the data points were checked for accuracy and methods used should keep the x, y coordinates within the proper section in most cases. However, due to the complexity and in cases redundancy in the public land survey system for Indiana some x, y pairs may not be located in the proper section or even the proper county. Other sources of error may be caused by misinterpretation of the driving directions or office locating. Several areas have different survey systems than the Congressional TRS (Clark Military Grant, Military Donations, Meridian Road Lines, Indian Treaties etc.) and no attempt at this time was made to provide centroids for these areas.

"Located records were primarily field located based on the location identified on the USGS 1:24,000 7.5 minute series topo map by the field locator. In some cases the structure or subdivsion may not be on the map and location is based on topography. So some error may be inherent in the field locations and points placed on the map ( a single point on a map may be 100 feet across). The scale is based USGS 1:24,000 7.5 minute series topographic maps. However, in most cases locations of mislocated wells can have large errors, with the reported locations having no meaning."

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Indiana Geological Survey
Publication_Date: 1997
Title:
The Hydrogeology of Allen County, Indiana - IGS Special Report 57
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: 611 N. Walnut Grove Ave., Bloomington, Indiana 47405
Publisher: Indiana Geological Survey
Other_Citation_Details: None
Online_Linkage: <http://igs.indiana.edu/bookstore/>
Source_Scale_Denominator: 24,000
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1997
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: Maumee_TF_Contours_merge.shp
Source_Contribution: bedrock elevation contours

Source_Information:
Source_Citation:
Citation_Information:
Originator: Michigan Department of Environmental Quality
Publication_Date: 2012
Title:
Michigan Department of Environmental Quality Statewide Groundwater Database
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: Lansing, Michigan
Publisher: Michigan Department of Environmental Quality
Other_Citation_Details: None
Online_Linkage: <http://www.michigan.gov/deq>
Source_Scale_Denominator: 24,000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2012
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: Mich_BR_wells_NAD83.shp
Source_Contribution: point locations of water wells with bedrock depth information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Indiana Department of Natural Resources
Publication_Date: 2012
Title: North_IN_BRT_contours
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: Indianapolis, Indiana
Publisher: Indiana Department of Natural Resources
Other_Citation_Details: None
Online_Linkage: None
Source_Scale_Denominator: 24,000
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121120
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: North_IN_BRT_contours.shp
Source_Contribution: bedrock elevation contours

Source_Information:
Source_Citation:
Citation_Information:
Originator: Indiana Department of Natural Resources
Publication_Date: 2012
Title: StJoe_BRT_polyline
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: Indianapolis, Indiana
Publisher: Indiana Department of Natural Resources
Other_Citation_Details: None
Online_Linkage: None
Source_Scale_Denominator: 24,000
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121120
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: StJoe_BRT_polyline.shp
Source_Contribution: bedrock elevation contours

Source_Information:
Source_Citation:
Citation_Information:
Originator:
Ohio Department of Natural Resources, Division of Geological Survey
Publication_Date: 20040109
Title: 1:24,000-scale bedrock-topography contours for Ohio
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: Columbus, Ohio
Publisher: Ohio Division of Geological Survey
Other_Citation_Details: None
Online_Linkage: <http://www.dnr.state.oh.us/>
Source_Scale_Denominator: 24,000
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20040109
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: OH_btcontours_NAD83.shp
Source_Contribution: bedrock elevation contours

Source_Information:
Source_Citation:
Citation_Information:
Originator: Indiana Geological Survey
Publication_Date: 20121120
Title: uncobot_4_revised
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: Bloomington, Indiana
Publisher: Indiana Geological Survey
Other_Citation_Details: None
Online_Linkage: None
Source_Scale_Denominator: 24,000
Type_of_Source_Media: Network drive
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121120
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: uncobot_4_revised.shp
Source_Contribution: bedrock elevation contours

Source_Information:
Source_Citation:
Citation_Information:
Originator: Indiana Geological Survey
Publication_Date: 20121120
Title: BR_Boreholes_2012
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: Bloomington, Indiana
Publisher: Indiana Geological Survey
Other_Citation_Details: None
Online_Linkage: None
Source_Scale_Denominator: 24,000
Type_of_Source_Media: Network drive
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121120
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: BR_Boreholes_2012.shp
Source_Contribution: point locations of boreholes with bedrock depth information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Indiana Geological Survey
Publication_Date: 20121120
Title: UNC_Boreholes_2012
Edition: 1
Geospatial_Data_Presentation_Form: Vector Digital Data
Publication_Information:
Publication_Place: Bloomington, Indiana
Publisher: Indiana Geological Survey
Other_Citation_Details: None
Online_Linkage: None
Source_Scale_Denominator: 24,000
Type_of_Source_Media: Network drive
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121120
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: UNC_Boreholes_2012.shp
Source_Contribution:
point locations of boreholes with unconsolidated sediment thickness information

Process_Step:
Process_Description:
INTERPOLATE PRELIMINARY BEDROCK SURFACE

A continuous bedrock surface model named "Maumee_1" was interpolated for the Maumee watershed region using the "TopoToRaster" tool of ESRI ArcToolbox. Input data included ESRI shapefiles whose features, whether points representing boreholes or polylines representing contours, contain explicit bedrock elevation values. The names of these input shapefiles are as follows: "BR_Boreholes_2012," "uncobot_4_revised," "OH_btcontours_NAD83," "StJoe_BRT_polyline," "North_IN_BRT_contours," "Mich_BR_wells_NAD83," and "Maumee_TF_Contours_merge."

Source_Used_Citation_Abbreviation:
"BR_Boreholes_2012" and "Mich_BR_wells_NAD83" (ESRI point shapefiles); "uncobot_4_revised," "OH_btcontours_NAD83," "StJoe_BRT_polyline," "North_IN_BRT_contours," and "Maumee_TF_Contours_merge" (ESRI polyline shapefiles)
Process_Date: 20121120
Source_Produced_Citation_Abbreviation: "Maumee1" (ESRI raster grid data set)
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Process_Step:
Process_Description:
IDENTIFY USEFUL UNCONSOLIDATED BOREHOLE DATA - CREATE SHAPEFILE

In addition to the borehole data containing explicit bedrock elevation values, boreholes composed purely of unconsolidated sediment were also utilized in the creation of this data set. A purely unconsolidated borehole entails an absence of any significantly thick layer of consolidated material at any point in the vertical record. Hence, only those unconsolidated boreholes whose vertical thickness extended below the surface of the model "Maumee1" were utilized. It should be noted that the bedrock elevation values of the unconsolidated borehole data points are only implied. That is, their elevation values can be conceptualized as a minimum bedrock elevation, but in actuality the bedrock surface may lie deeper. The steps by which these deep unconsolidated borehole data points were identified are described below.

STEP 1: Using the "Extract Values to Points" tool of ESRI ArcToolbox, extract the values from "Maumee1" to the attribute table of the point shapefile named "UNC_Boreholes_2012"

STEP 2: Select unconsolidated boreholes (from UNC_Boreholes_2012.shp) whose elevation at the bottom of the unconsolidated sediment is deeper than the bedrock surface of the model "Maumee1"

STEP 3: Export the selected point features from UNC_Boreholes_2012.shp as a new shapefile titled "UNC_Boreholes_2012_Deeper"

Source_Used_Citation_Abbreviation:
"Maumee1" (ESRI raster grid data set); "UNC_Boreholes_2012" (ESRI point shapefile)
Process_Date: 20121120
Source_Produced_Citation_Abbreviation: "UNC_Boreholes_2012_Deeper" (ESRI point shapefile)
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Process_Step:
Process_Description:
INTERPOLATE BEDROCK SURFACE WITH UNCONSOLIDATED BOREHOLE DATA INCLUDED

Another bedrock model was interpolated using the "TopoToRaster" Tool of ESRI ArcToolbox and with the shapefile named "UNC_Boreholes_2012_Deeper" included in addition to all of the input data from the first process step. The output raster model was named "Maumee2."

Source_Used_Citation_Abbreviation:
"BR_Boreholes_2012," "Mich_BR_wells_NAD83," and "UNC_Boreholes_2012_Deeper" (ESRI point shapefiles); "uncobot_4_revised," "OH_btcontours_NAD83," "StJoe_BRT_polyline," "North_IN_BRT_contours," and "Maumee_TF_Contours_merge" (ESRI polyline shapefiles)
Process_Date: 20121120
Source_Produced_Citation_Abbreviation: "Maumee2" (ESRI raster grid data set)
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Process_Step:
Process_Description:
DIGITIZE DRAINAGE ROUTES

Drainage networks could be observed throughout the bedrock surface displayed by the model named "Maumee2". However, in some areas the input data struggled to create pronounced drainage routes, mostly due to the issue of scarce point density. The aim of this process step was to further accentuate the apparent, but under-pronounced drainage networks shown in the model. This was acheived by connecting strings of borehole points with similar elevation values while using subjective geologic knowledge to infer the directionality of drainage routes. Three polyline shapefiles were edited in this process step: "Teays_Main_Channel," "Metea_Valley_Section_wElevs," and "LaFontaine_Section."

Source_Used_Citation_Abbreviation: "Maumee2" (ESRI raster grid data set)
Process_Date: 20121120
Source_Produced_Citation_Abbreviation:
"Teays_Main_Channel," "Metea_Valley_Section_wElevs," and "LaFontaine_Section" (ESRI polyline shapefiles)
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Process_Step:
Process_Description:
INTERPOLATE BEDROCK SURFACE USING ALL DATA

A final bedrock surface model was interpolated using the digitized drainage polylines (i.e. "Teays_Main_Channel," "Metea_Valley_Section_wElevs," and "LaFontaine_Section") from the previous step as well as all of the data sets from the third process step. The output raster model was named "Maumee3."

Source_Used_Citation_Abbreviation:
"BR_Boreholes_2012," "Mich_BR_wells_NAD83," and "UNC_Boreholes_2012_Deeper" (ESRI point shapefiles); "uncobot_4_revised," "OH_btcontours_NAD83," "StJoe_BRT_polyline," "North_IN_BRT_contours," "Maumee_TF_Contours_merge," "Teays_Main_Channel," "Metea_Valley_Section_wElevs," and "LaFontaine_Section" (ESRI polyline shapefiles)
Process_Date: 20121120
Source_Produced_Citation_Abbreviation: "Maumee3" (ESRI raster grid data set)
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Process_Step:
Process_Description:
TEST GOODNESS OF FIT USING ORDINARY LEAST SQUARES REGRESSION

Within ESRI ArcMap, an ordinary least squares (OLS) regression was performed to test how well the interpolated model, "Maumee3," fit the actual bedrock elevation values of the point data. To do this, the three different point data sets (i.e. "BR_Boreholes_2012," "Mich_BR_wells_NAD83," and "UNC_Boreholes_2012_Deeper") needed to be merged into a single shapefile. Additionally, those points needed to have the values of the underlying model (i.e. "Maumee3") attached to their attribute table. The steps are described below.

STEP 1: Standardize the field headers and field data types from the attribute tables of "BR_Boreholes_2012," "Mich_BR_wells_NAD83," and "UNC_Boreholes_2012_Deeper" so that a merge operation is possible. The fields containing bedrock elevation values were renamed to have the common alias "BR_Z_FT."

STEP 2: Use the "Merge" tool of ESRI ArcToolbox to combine "BR_Boreholes_2012," "Mich_BR_wells_NAD83," and "UNC_Boreholes_2012_Deeper" into a single output shapefile named "Maumee_Boreholes_Merged."

STEP 3: Using the "Extract Values to Points" tool of ESRI ArcToolbox, attach the underlying values of "Maumee3" to the attribute table of the point features in the shapefile named "Maumee_Boreholes_Merged," the name of the attached field being "RASTERVALU."

STEP 4: Run an OLS regression on "Maumee_Boreholes_Merged" with the field named "BR_Z_FT" as the dependent variable and the field named "RASTERVALU" as the independent variable. The output was a new shapefile named "Maumee_Boreholes_w_Stats" along with a table containing descriptive statistics such as the coefficient of determination (i.e. r-squared value).

The coefficient of determination (goodness of fit) between the model and actual point data was 0.91. This statistic would be closer to 100% if the only independent variables were the same points as the points of the dependent variable, but not all emphasis was placed on point data. Rather, contours were incorporated to create a more fluid and realistically behaving bedrock surface model.

Source_Used_Citation_Abbreviation:
"BR_Boreholes_2012," "Mich_BR_wells_NAD83," and "UNC_Boreholes_2012_Deeper" (ESRI point shapefiles); "Maumee3" (ESRI raster grid data set)
Process_Date: 20121120
Source_Produced_Citation_Abbreviation: "Maumee_Boreholes_w_Stats" (ESRI point shapefile)
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Process_Step:
Process_Description:
GENERATE CONTOURS

This process step describes how bedrock elevation contours were generated, edited, and finalized for the creation of this data set.

STEP 1: From the raster model named "Maumee3," an ESRI polyline shapefile depicting bedrock elevation contours for the Maumee watershed region was created, its name being "Maumee_Wtrshed_BR_Contours_1." To create this shapefile, the "Contour" tool of ESRI ArcToolbox was utilized with the "Maumee 3" model as input, "Maumee_Wtrshed_BR_Contours_1" as output, and a contour interval of 40 feet was established.

STEP 2: The lengths (in meters) of contour line features were calculated, creating a field named "Shape_Length" in the attribute table of "Maumee_Wtrshed_BR_Contours_1." This field was then sorted and those features whose lengths were less than 5000 meters were selected then deleted. The intention was to remove unwanted detail (i.e. contouring of very small basins) produced by the "Contour" tool.

STEP 3: The "Simplify Line" tool of ESRI ArcToolbox was used on "Maumee_Wtrshed_BR_Contours_1" to remove vertices that weren't critical to preserving the shapes of contour line features. This had a generalizing effect on the contours because some detail was reduced with the deletion of vertices. The output shapefile produced by this operation was named "Maumee_Wtrshed_BR_Contours_2."

STEP 4: The "Smooth Line" tool of ESRI Arctoolbox was used on "Maumee_Wtrshed_BR_Contours_2" to, as the name entails, smooth the contour lines. The smoothing algorithm used was that of a bezier interpolation, which adds curvature while maintaining that contour lines run through the original vertices. The output from this operation was a shapefile named "Maumee_Wtrshed_BR_Contours_3."

STEP 5: The "Dissolve" tool of ESRI ArcToolbox was used on "Maumee_Wtrshed_BR_Contours_3" to merge topologically connected line features into single contours. The output from this operation was a shapefile named "Maumee_Wtrshed_BR_Contours_4."

STEP 6: "Maumee_Wtrshed_BR_Contours_4" was clipped to the boundary of the Maumee watershed region using the "Clip" tool of ESRI ArcToolbox. The output of this operation was a shapefile named "Bedrock_Contours_Maumee_Basin_IGS_IN," which is the final product of the process steps and the data set for which this metadata was written.

Source_Used_Citation_Abbreviation: "Maumee3" (ESRI raster grid data set)
Process_Date: 20121120
Source_Produced_Citation_Abbreviation: "Maumee_Wtrshed_BR_Contours" (ESRI polyline shapefile)
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Process_Step:
Process_Description:
PARSE METADATA

This metadata file was pre-parsed and parsed using CNS (Chew and Spit, v. 2.6.1) and MP (Metadata Parser, v. 2.7.1) software written by Peter N. Schweitzer (U.S. Geological Survey). The errors generated by MP were all addressed and corrected.

Process_Date: 20121120
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Shawn Naylor
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405-2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: snaylor@indiana.edu
Hours_of_Service: 0800 - 1700 Eastern Standard Time
Contact_Instructions: Monday - Friday, except holidays


Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 99


Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 16
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.99960000
Longitude_of_Central_Meridian: -87.00000000
Latitude_of_Projection_Origin: 0.00000000
False_Easting: 500000.00000000
False_Northing: 0.00000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000100
Ordinate_Resolution: 0.000100
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222


Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: None
Entity_Type_Definition: ESRI Polyline Shapefile
Entity_Type_Definition_Source: None

Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: BR_Z_FT
Attribute_Definition: Bedrock elevation in feet above sea level
Attribute_Definition_Source: IGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 480
Range_Domain_Maximum: 840

Overview_Description:
Entity_and_Attribute_Overview:
This data set provides contoured ESRI polylines each containing a single attribute, bedrock elevation in feet above sea level.

Entity_and_Attribute_Detail_Citation:
This document is the only file that contains entity and attribute information for "Bedrock_Contours_Maumee_Basin_IGS_IN."


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Publication Sales
Contact_Position: Clerk
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 855 2504
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: IGSinfo@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays

Resource_Description: Downloadable Data

Distribution_Liability:
CREDIT:

It is requested that the dataset be cited in any products generated from this data. The following source citation should be included: [Bedrock_Contours_Maumee_Basin_IGS_IN: Bedrock Topography, 2012 (Indiana Geological Survey, 1:200,000, ESRI Shapefile)].

WARRANTY:

Indiana University, Indiana Geological Survey warrants that the media on which this product is stored will be free from defect in materials and workmanship for ninety (90) days from the date of acquisition. If such a defect is found, return the media to Publication Sales, Indiana Geological Survey, 611 North Walnut Grove, Bloomington, Indiana 47405 2208, and it will be replaced free of charge.

LIMITATION OF WARRANTIES AND LIABILITY:

Except for the expressed warranty above, the product is provided "AS IS", without any other warranties or conditions, expressed or implied, including, but not limited to, warranties for product quality, or suitability to a particular purpose or use. The risk or liability resulting from the use of this product is assumed by the user. Indiana University, Indiana Geological Survey shares no liability with product users indirect, incidental, special, or consequential damages whatsoever, including, but not limited to, loss of revenue or profit, lost or damaged data or other commercial or economic loss. Indiana University, Indiana Geological Survey is not responsible for claims by a third party. The maximum aggregate liability to the original purchaser shall not exceed the amount paid by you for the product.


Metadata_Reference_Information:
Metadata_Date: 20121120
Metadata_Review_Date: 20121210
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Indiana Geological Survey
Contact_Person: Chris Dintaman
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and physical address
Address: 611 North Walnut Grove Ave.
City: Bloomington
State_or_Province: Indiana
Postal_Code: 47405 2208
Country: USA
Contact_Voice_Telephone: 812 856 5654
Contact_Facsimile_Telephone: 812 855 2862
Contact_Electronic_Mail_Address: cdintama@indiana.edu
Hours_of_Service: 0800 to 1700 Eastern Standard Time
Contact_Instructions: Monday through Friday, except holidays
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: None
Metadata_Use_Constraints:
This metadata file is intended to accompany the data set identified and received from the IGS. It is not to be altered or summarized. IGS does not support secondary distribution. If this data set was received from anyone besides the IGS, this metadata file and the data set it describes may lack integrity.

Generated by mp version 2.7.25 on Tue Dec 11 12:12:51 2012