Nebraska Test Hole Database

Geologic Log Header Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Publication_Date: 2007

Title: Nebraska Test Hole Database

Edition: 1.0

Geospatial_Data_Presentation_Form: Tabular digital data

Publication_Information:

Publication_Place: Lincoln, NE

Publisher:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Online_Linkage: <http://csd.unl.edu/general/gis-datasets.asp>

Description:

Abstract:

From the early 1930's to the present, the University of Nebraska-Lincoln Conservation and Survey Division (CSD) has drilled 'test holes' to examine the geology and hydrogeology of Nebraska. On-site sample description and collection of samples for analysis are major parts of the 'survey' mission. Over 5000 wells have been drilled as part of the test hole program. CSD geoscientists described the drilling logs in detail on-site. Reworking of the log and description are common, as staff and abilities change. This database emphasizes spatially referenced lighologic and stratigraphic data for the state.

Purpose:

To provide spatially referenced geologic data for the state of Nebraska.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1931

Ending_Date: Present

Currentness_Reference:

The beginning date was determined from the earliest year identified in the test hole log books. The drilling efforts are on-going. This version of the database was finalized in early 2007.

Status:

Progress: In work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -104.052016

East_Bounding_Coordinate: -95.381093

North_Bounding_Coordinate: 43.998818

South_Bounding_Coordinate: 40.000349

Keywords:

Theme:

Theme_Keyword_Thesaurus: ESRI

Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: Stratigraphy

Theme_Keyword: Lithology

Theme_Keyword: Hydrology

Theme_Keyword: Groundwater

Theme_Keyword: Geology

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Nebraska

Access_Constraints: None

Use_Constraints:

The data are the intellectual property of the University of Nebraska. The data may not be redistributed without permission to do so by the person(s) or unit listed as the Originator(s). In any product, including data, publications, or presentations generated using these data, it is required that the Conservation and Survey Division, University of Nebraska - Lincoln be acknowledged. Please include the following source citation: "Test holes drilled in Nebraska by the Conservation and Survey Division, University of Nebraska-Lincoln (CSD), for the study of geology.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Contact_Position: GIS Manager

Contact_Address:

Address_Type: mailing address

Address:

Hardin Hall 3310 Holdrege Street

City: Lincoln

State_or_Province: NE

Postal_Code: 68583-0961

Country: USA

Contact_Voice_Telephone: 402-472-3471

Contact_Facsimile_Telephone: 402-472-2410

Contact_Electronic_Mail_Address: gismanager@unl.edu

Hours_of_Service: 8:00-5:00 Central Time

Contact_Instructions: Business is conducted Monday-Friday, except holidays

Browse_Graphic:

Browse_Graphic_File_Name: <http://csd.unl.edu/general/metadata/thumbnails/tn_testholes.jpg>

Browse_Graphic_File_Description: Test hole location

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment:

MS Access ArcInfo in a Windows environment; versions very with data set.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Testholes were initially located using legal description and footages from known points. The database coordinates were derived from a program that converts legal descriptions to latitude and longitude. Using ArcInfo GIS software, the point locations were plotted on 1:50,000 scale county maps and accuracy was checked against the original test hole logs. Any decrepancies were checked and edited accordingly. If a test hole was "relocated", the location was edited using ArcInfo. Once all points were properly located, the 'addxy' command was excecuted in ArcInfo to add the current and correct coordinates to the county GIS layer. County layers were then merged to form a statewide layer.

Logical_Consistency_Report:

Records in the database have been checked against the original test hole log books

Completeness_Report: The database is statewide and updated as needed

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Publication_Date: 2007

Title: Nebraska Statewide Test Hole Database

Edition: 1.0

Geospatial_Data_Presentation_Form: Tabular digital data

Publication_Information:

Publication_Place: Lincoln, NE

Publisher:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Type_of_Source_Media: Online

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1930

Ending_Date: Present

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: CSD test hole logs

Source_Contribution:

Information from the original test hole logs was used to develop this database

Process_Step:

Process_Description:

Testholes were initially located using legal description and footages from known points. The database coordinates were derived from a program that converts legal descriptions to latitude and longitude. Using ArcInfo GIS software, the point locations were plotted on 1:50,000 scale county maps and accuracy was checked against the original test hole logs. Any decrepancies were checked and edited accordingly. If a test hole was "relocated", the location was edited using ArcInfo. Once all points were properly located, the 'addxy' command was excecuted in ArcInfo to add the current and correct coordinates to the county GIS layer. County layers were then merged to create a statewide layer.

Source_Used_Citation_Abbreviation: CSD test hole log books

Process_Date: 2006

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Contact_Position:

Jerry Ayers Hydrogeologist

Contact_Address:

Address_Type: mailing address

Address:

Hardin Hall 3310 Holdrege Street

City: Lincoln

State_or_Province: NE

Postal_Code: 68583-0961

Country: USA

Contact_Voice_Telephone: 402-472-3471

Contact_Facsimile_Telephone: 402-472-2410

Contact_Electronic_Mail_Address: gismanager@unl.edu

Hours_of_Service:

8:00-5:00 M-F Central Time except holidays

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 5432

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001

Longitude_Resolution: 0.000001

Geographic_Coordinate_Units: Decimal degrees

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: GeoLog_Hdr

Entity_Type_Definition: Geologic log header of CSD test holes

Entity_Type_Definition_Source: CSD

Attribute:

Attribute_Label: LogID

Attribute_Definition: Name used to identify individual test holes

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Unique test hole identification

Attribute:

Attribute_Label: Log_Unit

Attribute_Definition: Unit number of logging vehicle

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Unique number identifying logging vehicle

Attribute:

Attribute_Label: LogsRun

Attribute_Definition: Type of logs run

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:

C - caliper tool only M - multi-tool only B - both tools

Enumerated_Domain_Value_Definition:

C- caliper tool only M - multi-tool only B - both tools

Enumerated_Domain_Value_Definition_Source: CSD

Attribute:

Attribute_Label: Cal_SN

Attribute_Definition: Serial number of caliper tool, if used

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Unique value representing the caliper tool serial number

Attribute:

Attribute_Label: Multi_SN

Attribute_Definition: Serial number of multi-measurement took, if used

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Unique value representing multi-tool serial number

Attribute:

Attribute_Label: Oper

Attribute_Definition: Initials or name of loggin equipment operator

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Free text of operator name

Attribute:

Attribute_Label: Log_Cmpy

Attribute_Definition: Logging company name or agency responsible for the log

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Free text representing logging company

Attribute:

Attribute_Label: Log_Date

Attribute_Definition: Date test hole was geophysically logged in dd/mm/yy format

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Date well was logged

Attribute:

Attribute_Label: Bit_Size

Attribute_Definition: Drill bit size in inches

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Variable drilling bit size in inches

Attribute:

Attribute_Label: Mud_Res

Attribute_Definition: Resistivity of drilling fluid in ohm-m

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain:

Numeric value representing resistivity of drilling fluid in ohm-m

Attribute:

Attribute_Label: Mud_Temp

Attribute_Definition: Temperature of drilling fluid in degrees F

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Numeric value of temperature of drilling fluid in degrees F

Attribute:

Attribute_Label: Strt_Dep

Attribute_Definition: Starting depth of log suite in feet

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Numeric value representing starting depth in feet

Attribute:

Attribute_Label: End_Dep

Attribute_Definition: Ending depth of log suite in feet

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Numeric value representing ending depth of log suite in feet

Attribute:

Attribute_Label: Step

Attribute_Definition: Depth interval in feet used as digital increment

Attribute_Definition_Source: CSD

Attribute_Domain_Values:

Unrepresentable_Domain: Numeric value representing depth interval in feet

Overview_Description:

Entity_and_Attribute_Overview:

Attributes found within the GeoLog_Hdr table include: LodID, Log_Unit,_LosRun, Cal_SN, Multi_SN, Oper, Log_Cmpy, Log_Date, Bit_Size, Mud_Res, Mud_Temp, Strt_Dep, End_Dep, Step.

Entity_and_Attribute_Detail_Citation: None

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Contact_Position: GIS Manager

Contact_Address:

Address_Type: mailing address

Address:

Hardin Hall 3310 Holdrege Street

City: Lincoln

State_or_Province: NE

Postal_Code: 68583-0961

Country: USA

Contact_Voice_Telephone: 402-472-3471

Contact_Facsimile_Telephone: 402-472-2410

Contact_Electronic_Mail_Address: gismanager@unl.edu

Hours_of_Service: 8:00-5:00 M-F Central Time

Contact_Instructions: Business is conducted Monday-Friday, except holidays

Resource_Description: Downloadable Data

Distribution_Liability:

The Conservation and Survey Division, University of Nebraska-Lincoln has produced this product using what is thought to be the most reliable information available or reproduced the material as provided. The detail and precision of the interpretations made are according to accepted professional standards and are dependent upon the techicques, hardware, and/or software utilized. The user must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data and other conditions specific to certain data. No warranty expressed or implied is made by the University of Nebraska regarding the positional or attribute accuracy or utility of this information. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the University of Nebraska in the use of the data.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name:

ARCE MS Access

File_Decompression_Technique: No compression applied

Transfer_Size: 275

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://csd.unl.edu/general/gis-datasets.asp>

Online_Computer_and_Operating_System: Varies

Offline_Option:

Offline_Media: CD-ROM

Recording_Format: Varies

Compatibility_Information: Varies

Fees:

No fee for online downloads. Fees may apply in other cases depending on media and processing time.

Ordering_Instructions: E-mail, FAX or write with request. Letterhead preferred.

Turnaround: varies with media

Custom_Order_Process: Written request, billed as Time & Materials

Technical_Prerequisites: Must be able to process ArcInfo export format files

Available_Time_Period:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1931

Ending_Date: 2007

Metadata_Reference_Information:

Metadata_Date: 200703

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Conservation & Survey Division, University of Nebraska-Lincoln (CSD)

Contact_Person: GIS Manager

Contact_Position: GIS Manager

Contact_Address:

Address_Type: mailing address

Address:

Hardin Hall 3310 Holdrege Street

City: Lincoln

State_or_Province: NE

Postal_Code: 68583-0961

Country: USA

Contact_Voice_Telephone: 402-472-3471

Contact_Facsimile_Telephone: 402-472-2410

Contact_Electronic_Mail_Address: rsimpson2@unl.edu

Hours_of_Service:

8:00-5:00 Central Time except holidays

Contact_Instructions: Contact by e-mail recommended.

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: none

Metadata_Use_Constraints:

This metadata file is intended to accompany the geospatial data set identified and received from the Conservation and Survey Division, University of Nebraska-Lincoln. It is not to be altered or summarized. CSD does not encourage secondary distribution of data. If this geospatial data set was received from anyone besides CSD, this metadata file and the geospatial data set it describes may lack integrity.