# Data generated by sediment thickness and bedrock topography model of southwest Nova Scotia

TypeArcGIS File Geodatabase (GDB), ESRI Shapefiles (SHP) and TIFF (LZW) files

TagsGeologic & Geophysical; geoscientificInformation; Downloadable Data; digital products; digital geoscience data; digital databases; digital maps; bedrock geological mapping; bedrock geology; bedrock topography; sediment thickness; sedimentology; surficial geological mapping; surficial geology/geomorphology; Nova Scotia; Nova Scotia, Southwestern; Baccaro; Bridgewater; Cape Sable Island; Church Point; Comeau's Hill; Digby; Digby County, Kejimkujik Lake; Lake Rossignol; Liverpool; Lockeport; Meteghan; Port Mouton; Pubnico; Queens County; Shelburne; Shelburne County; Tusket; Wentworth Lake; Weymouth; Yarmouth; Yarmouth County; 20O/08; 20O/09; 20O/16; 20P/05; 20P/06; 20P/10; 20P/11; 20P/12; 20P/13; 20P/14; 20P/15; 21A/02; 21A/03; 21A/04; 21A/05; 21A/06; 21A/07; 21A/12; 21B/01; 21B/08

### Summary

    Regional sediment thickness and bedrock topography maps of southwest Nova Scotia were generated to aid in mineral, groundwater, and aggregate exploration, geotechnical investigations, aquifer vulnerability, and surficial geological studies. An understanding of the bedrock topography and distribution and thickness of surficial sediments across this region, including parts of Digby, Yarmouth, Shelburne, and Queens counties, will inform these types of investigations.

### Description

    The bedrock topography of southern Nova Scotia was generated using raster interpolation tools (Natural Neighbour) in the Spatial Analyst extension of ArcGIS 10.8.1. Depth to bedrock data for 9890 records with adequate location accuracy were derived from five sources: The Nova Scotia Well Logs database (n = 2729; NSE, 2022), the Nova Scotia Test Holes database (n = 39; Nova Scotia Department of Natural Resources and Renewables, 2021), the Nova Scotia Drillholes database (n = 1684; O’Neill and Poole, 2016), and bedrock outcrop points from bedrock mapping (n = 5438, White et al., 2012).Water well log records were filtered for accuracy of location and stratigraphic information; those records with incomplete log descriptions, incomplete location data, or no depth to bedrock data were excluded from analysis. It is important to note that water well drillers in Nova Scotia have only used GPS equipment to reference well locations since 2004, and so desktop spatial referencing of historical water well logs was conducted using property identification information (e.g., civic/lot number). Only those water well records where location accuracy is within 500 m were included. For drillhole database records, depth to bedrock was calculated using overburden depth and dip measurements; those records with incomplete data on location, depth, or dip were excluded. Outcrop points were filtered to exclude those identified as float and those identified as ‘no plot’ for cartographic thinning purposes. Data points are unevenly distributed throughout the study area which makes the bedrock surface difficult to identify where data are sparse. The sediment thickness of southwest Nova Scotia was calculated from the difference between the interpolated bedrock topography surface and the 5 m LiDAR surface elevation data using the raster toolset (minus function) in ArcGIS Spatial Analyst. The sediment thickness model shows the variability in thickness of unconsolidated sediments between the bedrock surface and the present-day land surface, up to a maximum of 76 m. This model also provides details on the regional glacial ice flow and sediment depositional and erosional histories and identifies widespread areas of drumlinized terrain, where drumlin ridges exceeding 40 m in thickness and exhibiting multiple flow directions stand out on the land surface, typically characterized by shallow bedrock with a surficial cover less than 5 m. Glaciofluvial and glaciolacustrine deposits commonly occur in topographic lows, which are now occupied by modern rivers and wetlands.

### Credits

    - D.M. Brushett
    - G.W. Kennedy
    - C.C. MacMullen

### Use limitations

    This data is made available under the Nova Scotia Open Government Licence

### Extent

There is no extent for this item.

### Scale Range

Maximum (zoomed in) | 1:5,000
Minimum (zoomed out) | 1:150,000,000

### Topics and Keywords ▼►

Themes or categories of the resourceGeoscientific
Content typeDownloadable Data
  Export to FGDC CSDGM XML format as Resource DescriptionNo
Theme keywordsGeologic & Geophysical; geoscientificInformation; Downloadable Data; digital products; digital geoscience data; digital databases; digital maps; bedrock geological mapping; bedrock geology; bedrock topography; sediment thickness; sedimentology; surficial geological mapping; surficial geology/geomorphology
Place keywordsNova Scotia; Nova Scotia, Southwestern; Baccaro; Bridgewater; Cape Sable Island; Church Point; Comeau's Hill; Digby; Digby County, Kejimkujik Lake; Lake Rossignol; Liverpool; Lockeport; Meteghan; Port Mouton; Pubnico; Queens County; Shelburne; Shelburne County; Tusket; Wentworth Lake; Weymouth; Yarmouth; Yarmouth County; 20O/08; 20O/09; 20O/16; 20P/05; 20P/06; 20P/10; 20P/11; 20P/12; 20P/13; 20P/14; 20P/15; 21A/02; 21A/03; 21A/04; 21A/05; 21A/06; 21A/07; 21A/12; 21B/01; 21B/08

### Citation ▼►

TitleData generated by sediment thickness and bedrock topography model of southwest Nova Scotia
Publication date2023-12-22 00:00:00
Presentation formatsdigital map
Series
  NameDigital Product ME
  Issue546

### Citation Contacts ▼►

Responsible party - originator
  Individual's nameDenise Brushett
  Organization's nameNova Scotia Department of Natural Resources and Renewables, Geoscience and Mines Branch, Geological Survey Division
  Contact's positionGeologist
    Contact information ▼►
      Phone
        Voice(902)-424-2517
        Fax(902)-424-7735
      Address
        Typepostal
        Delivery point1701 Hollis Street, P.O. Box 698
        CityHalifax
        Administrative areaNova Scotia
        Postal codeB3J 2T9
        CountryCA
        e-mail address denise.brushett@novascotia.ca
      Hours of service

            9:00 a.m. to 5:00 p.m. AST Monday-Friday

### Resource Details ▼►

Dataset languagesEnglish (CANADA)
Dataset character setutf8 - 8 bit UCS Transfer Format
Statuscompleted
Supplemental information

      Data Set ID = d546sw; Data Class = sgeo50; Project ID = SW Nova Sediment Thickness

Credits

      - D.M. Brushett
      - G.W. Kennedy
      - C.C. MacMullen

ArcGIS item properties

### Extents ▼►

Extent
  Geographic extent
    Bounding rectangle
      West longitude-66.675470
      East longitude-64.456747
      South latitude43.282673
      North latitude44.937334
      Extent contains the resourceYes

### Resource Points of Contact ▼►

Point of contact - point of contact
  Individual's nameDenise Brushett
  Organization's nameNova Scotia Department of Natural Resources and Renewables, Geoscience and Mines Branch, Geological Survey Division
  Contact's positionGeologist
    Contact information ▼►
      Phone
        Voice(902)-424-2517
        Fax(902)-424-7735
      Address
        Typepostal
        Delivery point1701 Hollis Street, P.O. Box 698
        CityHalifax
        Administrative areaNova Scotia
        Postal codeB3J 2T9
        CountryCA
        e-mail address denise.brushett@novascotia.ca
      Hours of service

            9:00 a.m. to 5:00 p.m. AST Monday-Friday

### Resource Maintenance ▼►

Resource maintenance
  Update frequencyas needed

### Resource Constraints ▼►

Constraints
  Limitations of use

        This data is made available under the Nova Scotia Open Government Licence

Legal constraints
  Limitations of use

        This data is made available under the Nova Scotia Open Government Licence

### Data Quality ▼►

Scope of quality information ▼►
  Resource leveldataset
Data quality report - Completeness commission ▼►
  dimensionhorizontal
  Data quality measure reference
    Measure description

          There may be positional accuracy errors in the digital data that come from the original data collection, plus there are errors added by the process of digitizing the features from the original published source maps or field maps. The transfer of this data from older base maps onto the current base maps may also produce some error. The user should be aware that using this data overlaid on topographic data that was not used during the digital capture of the data may result in apparent errors in the locations of the data that may or may not be real. The user should always try and use background topographic data that is the same as the source topographic data noted in this metadata. The entire risk as to the quality and accuracy of the data is with the user and the user shall use his/her own judgment in making use of the data or drawing conclusions from it.

  Conformance test results
    Test passedYes
    Result explanation

          No conformance or quantitative report

    Product specification ▼►
      TitleNo conformance or quantitative report

### Lineage ▼►

Process step ▼►
  When the process occurred2020-01-01 00:00:00
  Description

        Sediment thickness mapping was conducted to aid in surficial geological and surficial aquifer mapping, and further our understanding of the distribution and thickness of surficial sediments across southwestern Nova Scotia. A surficial thickness map was generated using ESRI ArcGIS kriging analysis functions. Depth to bedrock data from four sources were used: The Nova Scotia water well logs database (669 records; NSE, 2019), Nova Scotia Drillholes database (1698 records; O’Neill and Poole, 2016), and bedrock outcrop points from bedrock mapping (6962 records, White et al., 2012), and the surface elevation data extracted from the lidar digital elevation model. Data were filtered to remove georeferencing errors and incorrect geological descriptions.

Process step ▼►
  When the process occurred2023-01-01 00:00:00
  Description

        Digital dataset and map were created for the sediment thickness mapping/depth to bedrock modelling. Work was done by Angie and Barras and Jeff McKinnon from the GIS group.

Process step ▼►
  When the process occurred2023-12-22 00:00:00
  Description

        DP 546, Data generated by sediment thickness and bedrock topography model of southwest Nova Scotia.

Source data ▼►
  Description

        Data from this database was used as control points in generating the bedrock topography of southern Nova Scotia

  Source citation ▼►
    TitleNova Scotia Environment, 2020. Nova Scotia Well Logs Database
    Presentation formatsdigital map
    FGDC geospatial presentation formatvector digital data
    Series
      NameDigital Product ME
      Issue3
    Resource location online
      Online location (URL) https://www.novascotia.ca/nse/groundwater/welldatabase.asp
      Function performeddownload
Source data ▼►
  Description

        Data from this database was used as control points in generating the bedrock topography of southern Nova Scotia

  Source citation ▼►
    TitleNova Scotia Department of Energy and Mines, 2021: Test holes; in Nova Scotia groundwater atalas
    Creation date2021-04-25 00:00:00
    Presentation formatsdigital map
    FGDC geospatial presentation formatvector digital data
    Resource location online
      Online location (URL) https://fletcher.novascotia.ca/DNRViewer/?viewer=Groundwater [accessed April 25, 2021]
      Function performeddownload
Source data ▼►
  Description

        Data from this database was used as control points in generating the bedrock topography of southern Nova Scotia

  Source citation ▼►
    TitleO'Neill, M. and Poole, J.C., 2016. DP ME 0003, version 5, 2016, Nova Scotia drillholes database
    Presentation formatsdigital map
    FGDC geospatial presentation formatvector digital data
    Series
      NameDigital Product ME
      Issue3
    Resource location online
      Online location (URL) https://novascotia.ca/natr/meb/download/dp003.asp
      Function performeddownload
Source data ▼►
  Description

        Data from this database was used as control points in generating the bedrock topography of southern Nova Scotia

  Source citation ▼►
    TitleWhite, C.E., Fisher, B.E., McKinnon, J.S., and Ehler, A.L., 2012. DP ME 127, version 1, 2012. Digital geological data generated as part of geological mapping of the Meguma terrane of southwestern Nova Scotia (1998-2010), Shelburne, Digby, Yarmouth, Annapolis, Queens, and Lunenburg counties, Nova Scotia
    Presentation formatsdigital map
    FGDC geospatial presentation formatvector digital data
    Series
      NameDigital Product ME
      Issue127
    Resource location online
      Online location (URL) https://novascotia.ca/natr/meb/download/dp127.asp
      Function performeddownload
Source data ▼►
  Description

        Digital Elevation Model used in creation of raster datasets

  Source citation ▼►
    TitleNova Scotia Geomatics Centre, Service Nova Scotia & Internal Services, 2022. Digital Elevation Model NS_LiDAR_DEM_R_5m.tif for the province of Nova Scotia mosaicked from LiDAR data collected from 2016 to 2020

### Distribution ▼►

Distributor ▼►
  Contact information - distributor
    Individual's nameJeff Poole
    Organization's nameNova Scotia Department of Natural Resources and Renewables, Geoscience and Mines Branch, Geological Survey Division
    Contact's positionDigital Information Services Supervisor
      Contact information ▼►
        Phone
          Voice(902)-424-813
          Fax(902)-424-7735
        Address
          Typepostal
          Delivery point1701 Hollis Street, P.O. Box 698
          CityHalifax
          Administrative areaNova Scotia
          Postal codeB3J 2T9
          CountryCA
          e-mail address Jeff.Poole@novascotia.ca
        Hours of service

              Available: 9:00 a.m. to 5:00 p.m. AST Monday - Friday

Distribution format
  NameArcGIS File Geodatabase (GDB) , ESRI Shapefiles (SHP) and TIFF (LZW) files
  Version10.8.0
  Specificationdp546_1of3_shp_gdb_cntrlpnts.zip, dp546_2of3_raster_sdthk.zip, dp546_3of3_raster_btopo.zip
  File decompression techniqueZIP archive file
  Format information contentDataset showing sediment thickness and bedrock topography in SW Nova Scotia
Transfer options
  Units of distributionMB
  Online source
    Online location (URL) http://www.gov.ns.ca/natr/meb/download/dp546.asp
    Function performeddownload

### Fields ▼►

Details for object
d546swcp_control points, d546swcp.shp
  Definition

        ESRI file geodatabase feature class points - control points

  Definition source

        http://www.gov.ns.ca/natr/meb/download/dpfields.asp

Details for object
d546swnl_neatline, d546swnl.shp
  Definition

        ESRI file geodatabase feature class polygons - neatline

  Definition source

        http://www.gov.ns.ca/natr/meb/download/dpfields.asp

Details for object
d546sw_btopo_5m_LZW.tif
  Definition

        ESRI file geodatabase raster - bedrock topography

  Definition source

        http://www.gov.ns.ca/natr/meb/download/dpfields.asp

Details for object
d546sw_sdthk_5m_LZW.tif
  Definition

        ESRI file geodatabase raster - sediment thickness

  Definition source

        http://www.gov.ns.ca/natr/meb/download/dpfields.asp

Overview Description
  Entity and Attribute Overview

        The data set contains a point and a polygon feature class stored in an ESRI file geodatabase, as well as 2 raster feature classes. The shapefile (SHP) downloadable products contains the point and polygon vector feature classes.

### References ▼►

Aggregate Information
  Association typecross reference
  Aggregate resource name ▼►
    TitleBostock, H.S., 1970. Physiographic regions of Canada, scale 1:5 000 000
    Publication date1970-01-01 00:00:00
    Presentation formatshardcopy map
    FGDC geospatial presentation formatmap
    Series
      NameGeological Survey of Canada Map
      Issue1254A
    Other citation details

          doi: 10.4095/293408

Aggregate Information
  Association typecross reference
  Aggregate resource name ▼►
    TitleShaw, J., Gareau, P., and Courtney, R.C., 2002. Paleogeography of Atlantic Canada 13 – 0 ka
    Publication date2002-01-01 00:00:00
    Presentation formatshardcopy document
    FGDC geospatial presentation formatdocument
    Series
      NameQuaternary Science Reviews
      Issuev.21
      Page1863-1880
    Other citation details

          doi: 10.1016/S0277-3791(02)00004-5

Aggregate Information
  Association typecross reference
  Aggregate resource name ▼►
    TitleStea, R.R., Conley, H., and Brown, Y., 1992. Surficial geology map of Nova Scotia, scale 1:500 000.
    Publication date1992-01-01 00:00:00
    Presentation formatsdigital map
    FGDC geospatial presentation formatvector digital data
    Series
      NameNSDNR Map
      Issue1992-3
    Resource location online
      Online location (URL) https://novascotia.ca/natr/meb/download/mg/map/htm/map_1992-003.asp
      Function performeddownload
Aggregate Information
  Association typecross reference
  Aggregate resource name ▼►
    TitleUtting, D.J., 2011. Yarmouth coastal mapping, a component of the Atlantic Climate Adaptation Solutions (ACAS) Project; in Mineral Resources Branch, Report of Activities 2010
    Publication date2011-01-01 00:00:00
    Presentation formatshardcopy document
    FGDC geospatial presentation formatdocument
    Series
      NameNSDNR Report
      IssueME 2011-1
      Pagep. 137–143.
    Resource location online
      Online location (URL) https://novascotia.ca/natr/meb/pdf/11re01.asp
      Function performeddownload
Aggregate Information
  Association typecross reference
  Aggregate resource name ▼►
    TitleWhite, C.E., 2010. Stratigraphy of the Lower Paleozoic Goldenville and Halifax groups in southwestern Nova Scotia
    Publication date2010-01-01 00:00:00
    Presentation formatsdigital document
    FGDC geospatial presentation formatdocument
    Series
      NameAtlantic Geology
      Issuev. 46
      Pagep. 136–154
    Other citation details

          doi: 10.4138/atlgeol.2010.008

Aggregate Information
  Association typecross reference
  Aggregate resource name ▼►
    TitleWhite, C.E., and Barr, S.M., 2017. Stratigraphy and depositional setting of the Silurian–Devonian Rockville Notch Group, Meguma terrane, Nova Scotia, Canada
    Publication date2017-01-01 00:00:00
    Series
      NameAtlantic Geology
      Issuev. 53
      Pagep. 337–365
    Other citation details

          doi: 10.4138/atlgeol.2017.015

Portrayal catalogue citation ▼►
  TitleBrushett, D.M. , Kennedy, G.W., and MacMullen, C.C., 2023. Sediment Thickness and Bedrock Topography Maps of Southwest Nova Scotia
  Publication date2024-01-01 00:00:00
  Presentation formatsdigital map
  Series
    NameOpen File Map ME
    Issue2023-002
  Resource location online
    Online location (URL) https://novascotia.ca/natr/meb/download/mg/ofm/htm/ofm_2023-002.asp
    Function performeddownload

### Metadata Details ▼►

Metadata languageEnglish (CANADA)
Metadata character setutf8 - 8 bit UCS Transfer Format
Scope of the data described by the metadatadataset
Last update ⇔2023-12-20
ArcGIS metadata properties
  Metadata formatArcGIS 1.0
  Standard or profile used to edit metadataISO19115_3
  Created in ArcGIS for the item2023-06-14 10:12:27
  Automatic updates
    Have been performedNo

### Metadata Contacts ▼►

Metadata contact - author
  Individual's nameJeffrey McKinnon
  Organization's nameNova Scotia Department of Natural Resources and Renewables, Geoscience and Mines Branch, Geological Survey Division
  Contact's positionGeologist/GIS Specialist
    Contact information ▼►
      Phone
        Voice(902)-424-7323
        Fax(902)-424-7735
      Address
        Typepostal
        Delivery point1701 Hollis Street, P.O. Box 698
        CityHalifax
        Administrative areaNova Scotia
        Postal codeB3J 2T9
        CountryCA
        e-mail address Jeffrey.McKinnon@novascotia.ca
      Hours of service

            9:00 a.m. to 5:00 p.m. AST Monday-Friday

### Metadata Maintenance ▼►

Maintenance
  Update frequencyas needed

### Thumbnail and Enclosures ▼►

Thumbnail
  Thumbnail type
      Image file