DH_SedimentSamples: Locations and analysis of sediment samples collected in the Duxbury to Hull Massachusetts survey area.

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2010
Title:
DH_SedimentSamples: Locations and analysis of sediment samples collected in the Duxbury to Hull Massachusetts survey area.
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2009-1072
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage:
<https://pubs.usgs.gov/of/2009/1072/GIS/shapefile/DH_SedimentSamples.zip>
Online_Linkage: <https://pubs.usgs.gov/of/2009/1072/html/appendix1.html>
Larger_Work_Citation:
Citation_Information:
Originator: Walter A. Barnhardt
Originator: Seth D. Ackerman
Originator: Brian D. Andrews
Originator: Wayne E. Baldwin
Publication_Date: 2010
Title:
Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts.
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2009-1072
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2009/1072/>
Description:
Abstract:
These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Science Center (WHSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of sea-floor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters (5-30 m deep) of Massachusetts between the New Hampshire border and Cape Cod Bay. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>). This spatial dataset is from the study area located between Duxbury and Hull Massachusetts, and consists of high-resolution geophysics (bathymetry, backscatter intensity, and seismic reflection) and ground validation (sediment samples, video tracklines and bottom photographs). The data were collected during four separate surveys conducted between 2003 and 2007 (NOAA survey H10993 in 2003, USGS-WHSC survey 06012 in 2006, and USGS-WHSC surveys 07001 and 07003 in 2007) and cover more than 200 square kilometers of the inner continental shelf.
Purpose:
This data set includes the locations, identifiers, grain-size data and(or) textural descriptions of surficial sediments collected at 28 stations. The sediments were collected with a modified Van Veen grab (large SEABed Observation and Sampling System (SEABOSS)) during USGS survey 07003, conducted September 7-11, 2007 aboard the R/V Connecticut offshore Massachusetts in the Duxbury to Hull survey area. This data set was collected to ground-truth (verify) the acoustic data sets that were acquired during NOAA hydrographic survey H10993 (2003) and USGS geophysical surveys 06012 (2006) and 07001 (2007). Samples were analyzed in the sediment laboratory at the USGS Woods Hole Science Center.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070907
Ending_Date: 20070911
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.810074
East_Bounding_Coordinate: -70.606740
North_Bounding_Coordinate: 42.325839
South_Bounding_Coordinate: 42.106931
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: R/V Connecticut
Theme_Keyword: ESRI point shapefile
Theme_Keyword: surficial sediment classification
Theme_Keyword: sediment data
Theme_Keyword: sediments
Theme_Keyword: sediment samples
Theme_Keyword: ground-truth
Theme_Keyword: gravel
Theme_Keyword: sand
Theme_Keyword: silt
Theme_Keyword: clay
Theme_Keyword: stations
Theme_Keyword: seafloor
Theme_Keyword: WHSC field activity serial number 07003
Theme_Keyword: Van Veen grab sampler
Theme_Keyword: SEABOSS sampler
Theme_Keyword: Open-File Report 2009-1072
Theme_Keyword: OFR 2009-1072
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: environment
Theme_Keyword: location
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: Massachusetts
Place_Keyword: Boston South Shore
Place_Keyword: Massachusetts Bay
Place_Keyword: Cape Cod Bay
Place_Keyword: Nantasket Beach
Place_Keyword: Hull Bay
Place_Keyword: Scituate
Place_Keyword: Marshfield
Place_Keyword: Brant Rock
Place_Keyword: Duxbury Beach
Place_Keyword: Duxbury Bay
Stratum:
Stratum_Keyword_Thesaurus: General
Stratum_Keyword: Seafloor
Stratum_Keyword: Seabed
Temporal:
Temporal_Keyword_Thesaurus: General
Temporal_Keyword: 2007
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/of/2009/1072/GIS/browse_jpg/big/DH_SedimentSamples.jpg>
Browse_Graphic_File_Description: Thumbnail image of sediment sample locations
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
Cross_Reference:
Citation_Information:
Originator: L.J. Poppe
Originator: S.J. Williams
Originator: V.F. Paskevich
Publication_Date: 2005
Title:
USGS East-Coast Sediment Analysis: Procedures, Database, and GIS Data
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1001
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2005/1001/>
Cross_Reference:
Citation_Information:
Originator: F.P. Shepard
Publication_Date: 1954
Title: Nomenclature based on sand-silt-clay ratios
Series_Information:
Series_Name: Journal Sedimentary Petrology
Issue_Identification: 24 (3)
Publication_Information:
Publication_Place: Tulsa, OK
Publisher: Society of Economic Paleontologists and Mineralogists
Online_Linkage: <http://jsedres.sepmonline.org/cgi/content/abstract/24/3/151>
Cross_Reference:
Citation_Information:
Originator: D. Blackwood
Originator: K. Parolski
Publication_Date: 2001
Title: Seabed observation and sampling system
Edition: 1.0
Series_Information:
Series_Name: Sea Technology
Issue_Identification: v. 42, no. 2, p. 39-43
Cross_Reference:
Citation_Information:
Originator: Walter A. Barnhardt
Originator: Brian D. Andrews
Originator: Bradford Butman
Publication_Date: 2006
Title:
High-Resolution Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1293
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2005/1293/>
Cross_Reference:
Citation_Information:
Originator: Seth D. Ackerman
Originator: Bradford Butman
Originator: Walter A. Barnhardt
Originator: William W. Danforth
Originator: James M. Crocker
Publication_Date: 2006
Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2006-1008
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2006/1008/>
Cross_Reference:
Citation_Information:
Originator: Walter A. Barnhardt
Originator: Brian D. Andrews
Originator: Seth D. Ackerman
Originator: Wayne E. Baldwin
Originator: Christopher J. Hein
Publication_Date: 2009
Title:
High-Resolution Geological Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2007-1373
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2007/1373/>
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: All attributes were checked in a consistent manner
Logical_Consistency_Report:
No additional checks for topological consistency were performed on this data. Gaps in sequential sample numbers may exist.
Completeness_Report:
Only the subset of grain-size data collected during the R/V Connecticut survey 07003 that are within the study area between Duxbury and Hull have been included in this spatial dataset. Seventy-seven stations were occupied with the SEABOSS in the Duxbury to Hull survey area; however sediment samples were only collected at 28 stations where collecting a sample would not damage the sampling equipment (e.g. no samples were collected in areas with cobble, boulder or rocky seabed, as identified in real-time by video and photos). A total of 184 sampling sites were occupied during survey 07003; and a total of 128 sediment samples were collected. The grain-size data that is not included in this report are from sites south of Brant Rock, Massachusetts and will be published in a subsequent data release focused on Cape Cod Bay.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Navigation for survey 07003 used differential Global Positioning System (GPS). The recorded position of each sediment sample is actually the position of the GPS antenna on the survey vessel, not the SEABOSS sampler. The SEABOSS was deployed approximately 5 meters astern of the GPS antenna off the ship's J-frame on the starboard side. No layback or offset was applied to the recorded position. In addition to the ±5 meter offset the SEABOSS may drift additionally away from the survey vessel when deployed to the seafloor. Based on the various sources for horizontal offsets, a conservative estimate the horizontal accuracy of the SEABOSS location is 20-30 meters.
Lineage:
Source_Information:
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070907
Ending_Date: 20070911
Source_Currentness_Reference: ground condition
Process_Step:
Process_Description:
One hundred twenty-eight samples were collected aboard the R/V Connecticut (USGS survey 07003) with a Van Veen grab sampler (Blackwood and Parolski, 2001) that was also equipped with a digital-still and video camera. Forty-nine additional stations were occupied and "sampled" with the photographs and video where sediment samples could not be collected. Those stations are not represented in this dataset; see the SEABOSS Trackline shapefile in this report (USGS OFR 2009-1072) for the locations of those data.
Process_Date: 200709
Source_Produced_Citation_Abbreviation: bagged sediment samples
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Science party of survey 07003
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologists
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2315
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Process_Step:
Process_Description:
Samples were analyzed in the sediment laboratory at the USGS Woods Hole Science Center. Coarse fraction determined by sieve; fine fraction determined by Coulter Counter. See Poppe, Williams, and Paskevich (2005) for analytical specifics. MS Excel file (XLS) saved as Comma Separated Value file (CSV).
Source_Used_Citation_Abbreviation: bagged sediment samples
Process_Date: 200711
Source_Produced_Citation_Abbreviation: wb1.xls
Source_Produced_Citation_Abbreviation: wb1.csv
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Larry Poppe
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2314
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: lpoppe@usgs.gov
Process_Step:
Process_Description:
In ArcCatalog (version 9.3), the ASCII comma-delimited file (wb1.csv) was converted to a point feature class by right-clicking on the comma separated value text file -- Create Feature Class -- from XY table using the defined projection Geographic (Decimal_Degrees_WGS84.prj). {output file: 07003_SedAnalysis_Feb6.shp]
Source_Used_Citation_Abbreviation: wb1.csv
Process_Date: 20090206
Source_Produced_Citation_Abbreviation: 07003_SedAnalysis_Feb6.shp
Source_Produced_Citation_Abbreviation: 07003_SedAnalysis_Feb6.prj
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Process_Step:
Process_Description:
In ArcMap (version 9.3), the twenty-eight sediment sample locations from within the Duxbury to Hull survey area were selected from the shapefile of one hundred twenty-eight sediment sample locations that were collected during USGS field activity 07003. The selected sample locations representing the data from the Duxbury to Hull project were exported to a new ESRI point shapefile. Then XTools Pro (version 5.3.0) for ArcGIS desktop was used to export the table to Microsoft Excel, where the table was saved as an ASCII comma-delimited file (csv) [output files: DH_SedimentSamples.shp, DH_SedimentSamples.csv]
Source_Used_Citation_Abbreviation: 07003_SedAnalysis_Feb6.shp
Process_Date: 20090206
Source_Produced_Citation_Abbreviation: DH_SedimentSamples.shp
Source_Produced_Citation_Abbreviation: DH_SedimentSamples.prj
Source_Produced_Citation_Abbreviation: DH_SedimentSamples.csv
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Process_Step:
Process_Description:
In ArcMap (version 9.3), new depths were extracted from the final bathymetry grid (DH_bathy5m) using the tool VACExtras (v2.1) - Extract Depth. A single station (sample number 145) was collected beyond the bounds of the Duxbury to Hull survey area but within the adjacent Western Massachusetts Bay multibeam-echosounder survey (<https://pubs.usgs.gov/ds/99/>) therefore the depth of this sample was determined from the grid "wmb_bathy6m" using the identify tool in ArcMap and manually editing the attribute table. The Extract Depth tool created a temporary column in the attribute table called "depth_temp" and the ArcMap field calculator was used to convert the negative elevation value to a positive depth value, replacing the existing values in the field "DEPTH_M." The ASCII comma-delimited file (csv) created in the previous step was manually edited using a Microsoft Excel and saved as a CSV file with the same filename [output files: DH_SedimentSamples.shp, DH_SedimentSamples.csv]
Source_Used_Citation_Abbreviation: DH_SedimentSamples.shp
Source_Used_Citation_Abbreviation: DH_SedimentSamples.csv
Process_Date: 20090820
Source_Produced_Citation_Abbreviation: DH_SedimentSamples.shp
Source_Produced_Citation_Abbreviation: DH_SedimentSamples.csv
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 28
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: DH_SedimentSamples
Entity_Type_Definition: Point location of sediment samples
Entity_Type_Definition_Source: USGS
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: GROUP
Attribute_Definition: Internal Value - Sediment Lab Grouping
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3
Range_Domain_Maximum: 3
Attribute:
Attribute_Label: DB_ID
Attribute_Definition:
Unique identifier consisting of two characters and three numerics assigned during lab analysis
Attribute_Definition_Source: Scientist
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: FIELD_NO
Attribute_Definition: Sample name assigned in the field
Attribute_Definition_Source: Scientist
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: PROJECT
Attribute_Definition:
Project under which the samples were taken (COASTAL MASS = Coastal Massachusetts)
Attribute_Definition_Source: Scientist
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: CRUISE_ID
Attribute_Definition:
Name or number of cruise during which the samples were collected
Attribute_Definition_Source: Scientist
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: CONTACT
Attribute_Definition:
Name (initial and last name) of the principal investigator and/or survey data curator
Attribute_Definition_Source: Scientist
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: AREA
Attribute_Definition: General geographic where the samples were taken
Attribute_Definition_Source: Scientist
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: LATITUDE
Attribute_Definition: Latitude coordinate of sample location (decimal degrees, WGS84)
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 42.106931
Range_Domain_Maximum: 42.325839
Attribute_Units_of_Measure: Decimal degrees
Attribute_Measurement_Resolution: 0.000001
Attribute:
Attribute_Label: LONGITUDE
Attribute_Definition:
Longitude coordinate of sample location (decimal degrees, WGS84)
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -70.810074
Range_Domain_Maximum: -70.60674
Attribute_Units_of_Measure: Decimal degrees
Attribute_Measurement_Resolution: 0.000001
Attribute:
Attribute_Label: DEPTH_M
Attribute_Definition:
Depth or sounding in meters, extracted from the final bathymetry grid from the Duxbury to Hull survey area (depth for sample 145 was determined by the adjacent bathymetry grid wmb_bathy6m - see processing steps for more information).
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9.9
Range_Domain_Maximum: 33.8
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: T_DEPTH
Attribute_Definition:
Top depth of the sample below sediment-water interface in centimeters
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: B_DEPTH
Attribute_Definition:
Bottom depth of the sample below sediment-water interface in centimeters
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 2
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: DEVICE
Attribute_Definition: Device used to collect sample
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: VAN VEEN GRAB
Attribute:
Attribute_Label: MONTH_COLL
Attribute_Definition: Calendar month sample collected based on time in UTC.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9
Range_Domain_Maximum: 9
Attribute:
Attribute_Label: DAY_COLL
Attribute_Definition: Calendar day sample collected based on time in UTC.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 8
Range_Domain_Maximum: 10
Attribute:
Attribute_Label: YEAR_COLL
Attribute_Definition: Calendar year sample collected based on time in UTC.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7
Range_Domain_Maximum: 7
Attribute:
Attribute_Label: MONTH_ANAL
Attribute_Definition: Calendar month sample analyzed.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 11
Range_Domain_Maximum: 11
Attribute:
Attribute_Label: DAY_ANAL
Attribute_Definition: Calendar day sample analyzed.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 8
Attribute:
Attribute_Label: YEAR_ANAL
Attribute_Definition: Calendar year sample analyzed.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7
Range_Domain_Maximum: 7
Attribute:
Attribute_Label: WEIGHT
Attribute_Definition: Weight of dry sample in grams
Attribute_Definition_Source: Sediment Laboratory Analyst
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 11.1211
Range_Domain_Maximum: 207.04
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: GRAVEL_PCT
Attribute_Definition:
Gravel content in percent dry weight of the sample (particles with nominal diameters greater than 2 mm; -1phi and larger)
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 65.21
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: SAND_PCT
Attribute_Definition:
Sand content in percent dry weight of the sample (particles with nominal diameters less than 2 mm, but greater than or equal to 0.0625 mm ; 0phi through 4phi )
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.79
Range_Domain_Maximum: 99.51
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: SILT_PCT
Attribute_Definition:
Silt content in percent dry weight of the sample (particles with nominal diameters less than 0.0625 mm, but greater than or equal to 0.004 mm; 5phi through 8phi, inclusive)
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.09
Range_Domain_Maximum: 63.24
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: CLAY_PCT
Attribute_Definition:
Clay content in percent dry weight of the sample (particles with nominal diameters less than 0.004 mm; 9phi and smaller)
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.06
Range_Domain_Maximum: 44.98
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: CLASSIFICA
Attribute_Definition:
Sediment description based on a rigorous definition (Shepard, 1954)
Attribute_Definition_Source:
USGS East Coast Sediment Texture Database data dictionary - USGS OFR 2005-1001
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GRAVEL
Enumerated_Domain_Value_Definition: Sediment whose main phase (usually >50%) is >2 mm
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GRAVELLY SEDIMENT
Enumerated_Domain_Value_Definition:
Sediment whose main phase (usually >50%) is >2 mm, but with significant sand)
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SAND
Enumerated_Domain_Value_Definition: Sediment whose main phase is <2 mm, but >0.062 mm
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SILTY SAND
Enumerated_Domain_Value_Definition:
Sediment whose main phase is sand (usually >50%), but with significant silt
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SAND SILT CLAY
Enumerated_Domain_Value_Definition: Sediment with sand, silt, and clay concentrations all <20%)
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SANDY SILT
Enumerated_Domain_Value_Definition:
Sediment whose main phase is silt (usually >50%), but with significant sand
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CLAYEY SILT
Enumerated_Domain_Value_Definition:
Sediment whose main phase is silt (usually >50%), but with significant clay
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: MEDIAN
Attribute_Definition: Middle point in the grain-size distribution in phi units
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -1.82
Range_Domain_Maximum: 7.84
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: MEAN
Attribute_Definition: Average value in the grain-size distribution in phi units
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -1.68
Range_Domain_Maximum: 7.83
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: STDEV
Attribute_Definition: Standard Deviation of the grain-size distribution in phi units
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.52
Range_Domain_Maximum: 4.19
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: SKEWNESS
Attribute_Definition: Deviation from symmetrical form of the grain-size distribution
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.43
Range_Domain_Maximum: 3.63
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: KURTOSIS
Attribute_Definition:
Degree of curvature near the mode of the grain-size distribution
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -1.25
Range_Domain_Maximum: 73.47
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: MODE1CLASS
Attribute_Definition:
First mode (particle size that occurs the most number of times) in phi units
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: null value
Attribute:
Attribute_Label: MODE1FREQ
Attribute_Definition: Modal strength of the first mode in percent.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: null value
Attribute:
Attribute_Label: MODE2CLASS
Attribute_Definition: Second mode in phi units.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: null value
Attribute:
Attribute_Label: MODE2FREQ
Attribute_Definition: Modal strength of the second mode in percent.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: null value
Attribute:
Attribute_Label: MODE3CLASS
Attribute_Definition: Third mode in phi units.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: null value
Attribute:
Attribute_Label: MODE3FREQ
Attribute_Definition: Modal strength of the third mode in percent.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: null value
Attribute:
Attribute_Label: NMODES
Attribute_Definition: Number of modes
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: null value
Attribute:
Attribute_Label: PHIM5
Attribute_Definition: Weight percent of the sample in the -5 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHIM4
Attribute_Definition: Weight percent of the sample in the -4 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 14.7
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHIM3
Attribute_Definition: Weight percent of the sample in the -3 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 25.79
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHIM2
Attribute_Definition: Weight percent of the sample in the -2 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 20.98
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHIM1
Attribute_Definition: Weight percent of the sample in the -1 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 39.73
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_0
Attribute_Definition: Weight percent of the sample in the 0 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 21.44
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_1
Attribute_Definition: Weight percent of the sample in the 1 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.08
Range_Domain_Maximum: 29.61
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_2
Attribute_Definition: Weight percent of the sample in the 2 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.28
Range_Domain_Maximum: 60.43
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_3
Attribute_Definition: Weight percent of the sample in the 3 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.48
Range_Domain_Maximum: 79.06
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_4
Attribute_Definition: Weight percent of the sample in the 4 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.09
Range_Domain_Maximum: 47.03
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_5
Attribute_Definition: Weight percent of the sample in the 5 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 12.01
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_6
Attribute_Definition: Weight percent of the sample in the 6 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.02
Range_Domain_Maximum: 21.36
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_7
Attribute_Definition: Weight percent of the sample in the 7 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.03
Range_Domain_Maximum: 22.10
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_8
Attribute_Definition: Weight percent of the sample in the 8 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.03
Range_Domain_Maximum: 30.58
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_9
Attribute_Definition: Weight percent of the sample in the 9 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.03
Range_Domain_Maximum: 25.27
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_10
Attribute_Definition: Weight percent of the sample in the 10 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.02
Range_Domain_Maximum: 14.07
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: PHI_11
Attribute_Definition: Weight percent of the sample in the 11 phi fraction
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 5.64
Attribute_Units_of_Measure: percent
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: ANALYST
Attribute_Definition:
Name(usually first initial and last name) of person who performed the grain size or physical properties analysis
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: ANAL_COMM
Attribute_Definition:
Any further information about sediment analysis for all or specific parameters in this table
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: LITHOLOGY
Attribute_Definition: General lithologic description of sample
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Attribute:
Attribute_Label: COMMENTS
Attribute_Definition: IComments on sample collection or lithology
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string of width 254
Overview_Description:
Entity_and_Attribute_Overview:
The Attribute Definition Source for most of these attributes is the USGS East Coast Sediment Texture Database data dictionary which can be found in USGS Open File Report 2005-1001 (<https://pubs.usgs.gov/of/2005/1001/>)
Entity_and_Attribute_Detail_Citation:
USGS Open File Report 2005-1001 (<https://pubs.usgs.gov/of/2005/1001/>)
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP
Format_Version_Number: ArcGIS 9.3
Format_Specification: ESRI point shapefile
Format_Information_Content:
A zip file containing the geospatial data in shapefile format and as a comma-delimited text file, and metadata describing the data set of sediment sample locations collected with the SEABOSS.
File_Decompression_Technique: zip archive
Transfer_Size: 0.05 Mb
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://pubs.usgs.gov/of/2009/1072/GIS/shapefile/DH_SedimentSamples.zip>
Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: None
Technical_Prerequisites:
These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. The shapefile is also distributed in compressed format as one WinZip (ver. 9.0) file. To utilize these data, the user must be able to uncompress the WinZip file.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII
Format_Version_Number: CSV file
Format_Specification: CSV file
Format_Information_Content:
A comma-delimited text file containing navigation and grain-size analysis data. The first record contains field headings.
File_Decompression_Technique: no compression applied
Transfer_Size: 0.025 Mb
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://pubs.usgs.gov/of/2009/1072/GIS/shapefile/DH_SedimentSamples.csv>
Network_Resource_Name: <https://pubs.usgs.gov/of/2009/1072/html/appendix1.html>
Access_Instructions: Data are downloadable via the World Wide Web (WWW).
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: None
Technical_Prerequisites:
These data are available as a generic ASCII formatted data file. The user must have a software program capable of reading the comma-delimited data file.
Metadata_Reference_Information:
Metadata_Date: 20091029
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sackerman@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.8.25 on Fri Feb 19 20:52:15 2010