Identification_Information: Citation: Citation_Information: Originator: Page C. Valentine Publication_Date: 2019 Title: Location and analyses of sediment samples collected on Stellwagen Bank during U.S. Geological Survey field activity 2017-030-FA, aboard the R/V Auk, May 18-23, 2017 Edition: 1.0 Geospatial_Data_Presentation_Form: tabular digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P94GOZ7C Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Online_Linkage: https://doi.org/10.5066/P94GOZ7C Online_Linkage: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/ Larger_Work_Citation: Citation_Information: Originator: Page C. Valentine Originator: VeeAnn A. Cross Publication_Date: 2019 Title: Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May 2017, U.S. Geological Survey Field Activity 2017-030-FA Edition: 1.0 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P94GOZ7C Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Valentine, P.C., and Cross, V.A., 2019, Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May 2017, U.S. Geological Survey Field Activity 2017-030-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P94GOZ7C. Online_Linkage: https://doi.org/10.5066/P94GOZ7C Online_Linkage: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/ Description: Abstract: This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen Bank National Marine Sanctuary, and the data collected will aid research on the ecology of fish and invertebrate species that inhabit the region. The Sanctuary's research vessel, R/V Auk, visited 50 locations on Stellwagen Bank at which a customized Van Veen grab sampler (SEABOSS) equipped with a video camera and a CTD was deployed in drift mode to collect sediment for grain-size analysis, video imagery of the seabed, and measurements of water column properties. Purpose: These sediment samples analyzed for grain-size composition, along with seabed imagery, will be used to describe the surficial geological substrates present in the study area. Supplemental_Information: Additional information regarding the field activity can be obtained from https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-030-FA. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170518 Ending_Date: 20170523 Currentness_Reference: ground condition when data were collected. Actual dates of collection May 18, 19, and 23, 2017 Status: Progress: complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.457280 East_Bounding_Coordinate: -70.136020 North_Bounding_Coordinate: 42.419890 South_Bounding_Coordinate: 42.171340 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: sea floor samples Theme_Keyword: sediment samples Theme_Keyword: ground-truth Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: field monitoring stations Theme_Keyword: sea-floor characteristics Theme_Keyword: marine geology Theme_Keyword: grain-size analysis Theme_Keyword: grab sampling Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: grab sampling Theme_Keyword: sediment analysis Place: Place_Keyword_Thesaurus: None Place_Keyword: North America Place_Keyword: United States Place_Keyword: Massachusetts Place_Keyword: Atlantic Ocean Place_Keyword: Stellwagen Bank Place_Keyword: Stellwagen Bank National Marine Sanctuary Place_Keyword: SBNMS Place_Keyword: Massachusetts Bay Access_Constraints: None. Use_Constraints: Not to be used for navigation. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Page C. Valentine Contact_Position: Research 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 x2239 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: pvalentine@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/data/samples/2017-030-FA_sedsamps_browse.jpg Browse_Graphic_File_Description: Browse graphic of the sediment sample locations collected on Stellwagen Bank. Browse_Graphic_File_Type: JPEG Cross_Reference: Citation_Information: Originator: D.S. Blackwood Originator: K.F. Parolski Publication_Date: 2001 Title: Seabed observation and sampling system Series_Information: Series_Name: Sea Technology Issue_Identification: v. 42, no. 2, p.39-43 Cross_Reference: Citation_Information: Originator: P. Valentine Originator: D. Blackwood Originator: K. Parolski Publication_Date: 2000 Title: Seabed observation and sampling system Series_Information: Series_Name: U.S. Geological Survey Fact Sheet Issue_Identification: FS-142-00 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/fs14200 Online_Linkage: https://pubs.usgs.gov/fs/fs142-00/ Cross_Reference: Citation_Information: Originator: L.J. Poppe Originator: K.Y. McMullen Originator: S.J. Williams Originator: V.F. Paskevich Publication_Date: 2014 Title: USGS east-coast sediment analysis: Procedures, database, and GIS data Edition: 3.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1001 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication has a data dictionary that is used to provide many of the attribute definitions used in this file. Online_Linkage: https://doi.org/10.3133/ofr20051001 Online_Linkage: https://pubs.usgs.gov/of/2005/1001/ Data_Quality_Information: Logical_Consistency_Report: These are the original files returned to the scientist after analysis in the Woods Hole Coastal and Marine Science Center. Completeness_Report: These data represent all the sediment samples collected as part of the field activity. However, a sample was not acquired at every station. Samples were discarded at sea if the sediment composition was visibly altered during collection, for example if the sampler did not close properly causing sediment to be lost during recovery of the sample. A total of 41 sediment samples were collected; stations without samples are: 4580, 4581, 4589, 4599, 4600, 4602, 4603, 4614, and 4625. Additionally, if the station was a plankton tow (indicated by PT after the station number), sediment samples were not acquired. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The location information for stations was acquired from a satellite navigation receiver (Furuno satellite compass SC-30, GPS receiver) at two second intervals with a horizontal accuracy of 10 m. The navigation antenna is located 5.3 m forward of the SEABOSS deployment location. This offset was not accounted for in the navigation acquisition (navigation fixes represent antenna location). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Water depth was determined using a Simrad ES60, 120 kHz, single beam echo sounder using a 120-25 transducer, which detects the seabed to a depth of 800 m. Depth values were rounded to the nearest meter to account for ship motion Lineage: Process_Step: Process_Description: Sediment sampling methods: As a part of the process of mapping the sea floor, the USGS developed the SEABed Observation and Sampling System (SEABOSS) to collect samples and video and photographic images of the seabed to aid in the interpretation of seabed sonar imagery. A modified Van Veen sediment grab sampler is mounted in the center of the SEABOSS frame, which ensures the sampler is properly oriented on the seabed when a sample is collected. Before deployment, the sampler bucket's jaws are opened by collapsing the extended arms to a near-horizontal position and locking them in place with two catches. The sampler operates passively to sample the seabed; it is not spring loaded. See the cross-references for additional information on the SEABOSS system. To collect a sediment sample, the SEABOSS frame was lowered gently onto the seabed, reducing tension on the cable, which caused the two locking catches to be automatically released by gravity. As the cable was retrieved, the grab sampler's arms were pulled upward, closing the bucket around the sediment, and the SEABOSS was lifted off the seabed. The SEABOSS was retrieved and set upon a wooden platform that kept the sampler bucket and camera systems above the deck. The sampler's arms were held in the upright position manually or by tension on the cable, the two doors on the upper side of the bucket were opened, and the sediment surface was photographed before the sediment was removed. For this project, the upper 2 cm of sediment, representing the surface of the seabed, were removed with a rectangular shovel 2-cm deep and stored in a plastic bag for grain-size analysis. The remaining sediment was dumped into a tray on the deck below the sampler and discarded, after which the sampler was washed in preparation for sampling at the next site. Further information on the SEABOSS can be found in Valentine and others (2000). Process_Date: 2017 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Page C. Valentine Contact_Position: Research 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 x2239 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: pvalentine@usgs.gov Process_Step: Process_Description: Samples were analyzed in the sediment laboratory at the USGS Woods Hole Coastal and Marine Science Center. Coarse fraction determined by sieve; fine fraction determined by Coulter Counter. See Poppe and others (2014) for analytical specifics for grain size analysis. Sediment statistics were recorded in MS Excel file (XLS) and returned to the scientist. Process_Date: 2017 Process_Step: Process_Description: The Excel spreadsheet was exported as an MS-DOS CSV file using Excel 365, omitting the last column of information (QUALITY GRADING GUIDELINES) which is an explanation of the quality grades and how they are determined. Process_Date: 2019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Using ArcGIS 10.6.1, the CSV file was converted to a shapefile within ArcMap using File - Add Data - Add XY data. The CSV file was selected, with the x-coordinate set to LONGITUDE and the y-coordinate set to LATITUDE. The coordinate system of the input coordinates was set to the geographic coordinate system GCS_WGS_1984. Once the XY event layer was added to ArcMap, the data were then converted to a shapefile by right-clicking on the event theme - Data - Export Data. All of the features were exported using the layer's source data for the coordinate system. The output shapefile was set to 2017-030-FA_sedsamps.shp. Process_Date: 2019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 41 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 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Local surface Depth_Resolution: 1 Depth_Distance_Units: meters Depth_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2017-030-FA_sedsamps.xlsx Entity_Type_Definition: Sediment sample location and analyses in Excel spreadsheet format. The attributes defined refer to the Excel spreadsheet column headings, and are also in the header row of the CSV file. The shapefile has these attributes (except ANALYSIS_I instead of ANALYSIS_ID, CLASSIFICA instead of CLASSIFICATION, and QUALITY_GR instead of QUALITY GRADE-ANALYST), and the software generated FID and shape, defined in the entity and attribute overview section. The last Excel spreadsheet column is omitted from the CSV and shapefile, and is described in the entity and attribute overview section. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: ANALYSIS_ID Attribute_Definition: Unique identification number generated in the sedimentation laboratory of the USGS's Woods Hole Coastal and Marine Science Center. This identifier consists of 2 characters followed by a dash and 6 numerics. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: FIELD_NO Attribute_Definition: Sample name or number as assigned in the field by the Chief Scientist. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: PROJECT Attribute_Definition: Name of project or project number under which samples were taken or data generated; sometimes project name indicates a more specific area. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: FA_ID Attribute_Definition: Name or number of cruise on which sample collected. The cruise identifier is in the format YYYY-XXX where YYYY is the survey year, and XXX is the survey number of that year. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: CONTACT Attribute_Definition: Name of Principal Investigator or Chief Scientist responsible for data collection (usually first initial and last name) when available. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: AREA Attribute_Definition: General geographic area of data collection. Name is general enough to easily locate area on a state map. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: LATITUDE Attribute_Definition: Latitude coordinate, in decimal degrees WGS84, of sample location. South latitude recorded as negative values. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 42.17134 Range_Domain_Maximum: 42.41989 Attribute_Units_of_Measure: Decimal degrees Attribute: Attribute_Label: LONGITUDE Attribute_Definition: Longitude coordinate, in decimal degrees WGS84, of sample location. West longitude is recorded as negative values. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -70.45728 Range_Domain_Maximum: -70.13602 Attribute_Units_of_Measure: Decimal degrees Attribute: Attribute_Label: DEPTH_M Attribute_Definition: Measured depth, in meters, of water overlying sediment at sample time. Depth value is not corrected for tides. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 23 Range_Domain_Maximum: 43 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: T_DEPTH Attribute_Definition: Top depth of sample, in centimeters, below the sediment-water interface. 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 sample, in centimeters, below the sediment-water interface. 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 the sample. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mini Seaboss w/ 0.1 sq m Van Veen grab Enumerated_Domain_Value_Definition: sample collected with the SEABOSS system that uses the 0.1 square meter Van Veen grab. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: MONTH_COLL Attribute_Definition: Calendar month sample collected. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5 Range_Domain_Maximum: 5 Attribute: Attribute_Label: DAY_COLL Attribute_Definition: Calendar day sample collected. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 18 Range_Domain_Maximum: 23 Attribute: Attribute_Label: YEAR_COLL Attribute_Definition: Calendar year sample collected. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2017 Range_Domain_Maximum: 2017 Attribute: Attribute_Label: MONTH_ANAL Attribute_Definition: Calendar month sample completed analysis. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 10 Range_Domain_Maximum: 10 Attribute: Attribute_Label: DAY_ANAL Attribute_Definition: Calendar day sample completed analysis. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 3 Attribute: Attribute_Label: YEAR_ANAL Attribute_Definition: Calendar year sample completed analysis. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2017 Range_Domain_Maximum: 2017 Attribute: Attribute_Label: WEIGHT Attribute_Definition: Weight of dry sample in grams. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 72.75 Range_Domain_Maximum: 160.17 Attribute_Units_of_Measure: grams Attribute: Attribute_Label: GRAVEL_PCT Attribute_Definition: Gravel content in percent dry weight of the sample (particles with nominal diameters greater than 2 mm; -1 phi and larger). Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 35.95 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; 0 phi through 4 phi). Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 64.1 Range_Domain_Maximum: 100.02 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; 5 phi through 8 phi, inclusive). Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.44 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; less than 8 phi). Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.06 Attribute_Units_of_Measure: percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: CLASSIFICATION Attribute_Definition: Sediment description based on rigorous definition usually Shepard (1954) as modified by Schlee and Webster (1967), Schlee (1973), and Poppe and others (2014). These values represent all the possible values as defined in the USGS East Coast Sediment Texture Database data dictionary, and do not necessarily reflect the values present in this dataset. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: GRAVEL Enumerated_Domain_Value_Definition: gravel equal to or greater than 50 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: GRAVELLY SEDIMENT Enumerated_Domain_Value_Definition: gravel equal to or greater than 10 percent, but less than 50 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SAND Enumerated_Domain_Value_Definition: sand equal to or greater than 75 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SILTY SAND Enumerated_Domain_Value_Definition: sand less than 75 percent and equal to or greater than 50 percent, silt greater than clay, and clay less than 20 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: CLAYEY SAND Enumerated_Domain_Value_Definition: sand less than 75 percent and equal to or greater than 50 percent, clay greater than silt, and silt less than 20 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SILT Enumerated_Domain_Value_Definition: silt equal to or greater than 75 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SANDY SILT Enumerated_Domain_Value_Definition: silt less than 75 percent and equal to or greater than 50 percent, sand greater than clay, and clay less than 20 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: CLAYEY SILT Enumerated_Domain_Value_Definition: silt less than 75 percent and equal to or greater than 50 percent, clay greater than sand, and sand less than 20 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: CLAY Enumerated_Domain_Value_Definition: clay equal to or greater than 75 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SANDY CLAY Enumerated_Domain_Value_Definition: clay less than 75 percent and equal to or greater than 50 percent, sand greater than silt, and silt less than 20 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SILTY CLAY Enumerated_Domain_Value_Definition: clay less than 75 percent and equal to or greater than 50 percent, silt greater than sand, and sand less than 20 percent Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SAND SILT CLAY Enumerated_Domain_Value_Definition: clay, sand, and silt greater than 20 percent each Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary 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: -0.69 Range_Domain_Maximum: 1.43 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: -0.63 Range_Domain_Maximum: 1.4 Attribute_Units_of_Measure: phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: STDEV Attribute_Definition: Standard deviation (root mean square of the deviations) 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: 0.49 Range_Domain_Maximum: 1.25 Attribute_Units_of_Measure: phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: SKEWNESS Attribute_Definition: Skewness (deviation from symmetrical form) of the grain size distribution. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.97 Range_Domain_Maximum: 1.32 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: KURTOSIS Attribute_Definition: Kurtosis (degree of curvature near the mode) of the grain size distribution. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -14.2 Range_Domain_Maximum: 20.68 Attribute_Units_of_Measure: unitless 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. This calculation is no longer made in the lab, but attribute value is maintained to be consistent with older datasets. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Blank Attribute: Attribute_Label: MODE1FREQ Attribute_Definition: Modal strength of the first mode in percent. This calculation is no longer made in the lab, but attribute value is maintained to be consistent with older datasets. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Blank Attribute: Attribute_Label: MODE2CLASS Attribute_Definition: Second mode in phi units. This calculation is no longer made in the lab, but attribute value is maintained to be consistent with older datasets. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Blank Attribute: Attribute_Label: MODE2FREQ Attribute_Definition: Modal strength of the second mode in percent. This calculation is no longer made in the lab, but attribute value is maintained to be consistent with older datasets. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Blank Attribute: Attribute_Label: MODE3CLASS Attribute_Definition: Third mode in phi units. This calculation is no longer made in the lab, but attribute value is maintained to be consistent with older datasets. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Blank Attribute: Attribute_Label: MODE3FREQ Attribute_Definition: Modal strength of the third mode in percent. This calculation is no longer made in the lab, but attribute value is maintained to be consistent with older datasets. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Blank Attribute: Attribute_Label: NMODES Attribute_Definition: Number of modes. This calculation is no longer made in the lab, but attribute value is maintained to be consistent with older datasets. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Blank Attribute: Attribute_Label: PHIM5 Attribute_Definition: Weight percent of the sample in the -5 phi fraction and coarser (nominal diameter of particles greater than or equal to 32mm); very coarse pebbles to cobbles. 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 (nominal diameter of particles greater than or equal to 16mm, but less than 32mm); coarse pebbles. 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: PHIM3 Attribute_Definition: Weight percent of the sample in the -3 phi fraction (nominal diameter of particles greater than or equal to 8mm, but less than 16mm); medium pebbles. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 4.72 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 (nominal diameter of particles greater than or equal to 4mm, but less than 8mm); fine pebbles. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 8.23 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 (nominal diameter of particles greater than or equal to2mm, but less than 4mm); very fine pebbles (granules). Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 35.22 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 (nominal diameter of particles greater than or equal to 1mm, but less than 2mm); very coarse sand. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.48 Range_Domain_Maximum: 55.07 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 (nominal diameter of particles greater than or equal to 0.5mm, but less than 1mm); coarse sand. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 13.33 Range_Domain_Maximum: 68.64 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 (nominal diameter of particles greater than or equal to 0.25mm, but less than 0.5mm); medium sand. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.32 Range_Domain_Maximum: 67.26 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 (nominal diameter of particles greater than or equal to 0.125mm, but less than 0.25mm); fine sand. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.15 Range_Domain_Maximum: 31.13 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 (nominal diameter of particles greater than or equal to 0.0625mm, but less than 0.125mm); very fine sand. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.72 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 (nominal diameter of particles greater than or equal to 0.031mm, but less than 0.0625mm); coarse silt. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.04 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 (nominal diameter of particles greater than or equal to 0.016mm, but less than 0.031mm); medium silt. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.12 Attribute_Units_of_Measure: percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: PHI_7 Attribute_Definition: Weight percent of the sample in the7 phi fraction (nominal diameter of particles greater than or equal to 0.008mm, but less than 0.016mm); fine silt. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.16 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 (nominal diameter of particles greater than or equal to 0.004mm, but less than 0.008mm); very fine silt. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.12 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 (nominal diameter of particles greater than or equal to 0.002mm, but less than 0.004mm); coarse clay. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.05 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 (nominal diameter of particles greater than or equal to 0.001mm, but less than 0.002mm); medium clay. Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.01 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 and finer (nominal diameter of particles less than 0.001 mm; fine clay. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.02 Attribute_Units_of_Measure: percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: ANALYST Attribute_Definition: Name (usually initials) of person who performed the grain size or physical properties analysis. In this case, ARP stands for Allison R. Paquette Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: QUALITY GRADE-ANALYST Attribute_Definition: Quality grades for sample data that do not have any additional comments are assigned based on the calculated percent difference between the weights of the coarse fraction remaining after wet sieving and the sum of all of the weighed fractions after dry sieving the coarse fraction, indicating an estimated differing amount of material which could skew the calculated grain size results. A quality grade is assigned as well as the initials of the person that assigned the grading (BJB is Brian J. Buczkowski). Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Quality grade: A-BJB Enumerated_Domain_Value_Definition: A = percent differences between 0% and +- 1.5% assigned by Brian J. Buczkowski. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: LITHOLOGY Attribute_Definition: General lithologic description of sample. This field is not always filled in, so will have blanks. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: COMMENTS Attribute_Definition: Comments on sample collection or lithology. This field is not always filled in, so will have blanks. Attribute_Definition_Source: modified from USGS East Coast Sediment Texture Database data dictionary Attribute_Domain_Values: Unrepresentable_Domain: Character string. Overview_Description: Entity_and_Attribute_Overview: These attribute definitions describe each column of information in the Excel spreadsheet with the exception of additional information in the last column of the Excel spreadsheet. That column contains an explanation of the ANAL_COMM values and how the quality grade is assigned. That column of information is omitted from the CSV and shapefile. The first row of the spreadsheet is the column heading. The CSV file has the same information and the column definitions are the same - with the last column of the XLSX file omitted (data quality grade explanation). The information in the last column of the XLSX is as follows: Data quality grades may be determined by several factors, and any comments or notes that indicate the data for a particular sample may be suspect are included in the results table for that sample under "comments". Quality grades for sample data that do not have any additional comments are assigned based on the calculated percent difference between the weights of the coarse fraction remaining after wet sieving and the sum of all of the weighed fractions after dry sieving the coarse fraction, indicating an estimated differing amount of material which could skew the calculated grain size results. A = percent differences between 0% and +-1.5% B = percent differences between +-1.5% and +-3% C = percent differences between +-3% and +-4.5% D = percent differences greater than +-4.5% Citations used in attribute definitions: Poppe, L.J., McMullen, K.Y., Williams, S.J., and Paskevich, V.F., eds., 2014, USGS east-coast sediment analysis: Procedures, database, and GIS data (ver. 3.0, November 2014): U.S. Geological Survey Open-File Report 2005-1001, http://pubs.usgs.gov/of/2005/1001/. Schlee, J., and Webster, J., 1967, A computer program for grain-size data: Sedimentology, v. 8, p. 45-54. Schlee, J., 1973, Atlantic continental shelf and slope of the United States -- sediment texture of the northeastern part: U.S. Geological Survey Professional Paper 529-L, 64 p. Shepard, F.P., 1954, Nomenclature based on sand-silt-clay ratios: Journal Sedimentary Petrology, v. 24, p. 151-158. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Page C. Valentine Contact_Position: Research 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 x2239 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: pvalentine@usgs.gov Resource_Description: 2017-030-FA_sedsamples.zip contains the sediment sample analysis data in three formats - an Excel file (2017-030-FA_sedsamps.xlsx), a CSV file (2017-030-FA_sedsamps.csv), and a shapefile (2017-030-FA_sedsamps.shp and additional files that make up a shapefile). In addition to the sediment analysis files, the zip file contains the browse graphic (2017-030-FA_sedsamps_browse.jpg) and FGDC CSDGM metadata in TXT, XML, and HTML formats. 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: XLSX Format_Version_Number: Excel 365 Format_Information_Content: The zip file contains the sediment sample analysis in XLSX, CSV and shapefile formats, along with the FGDC CSDGM metadata. Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/data/samples/2017-030-FA_sedsamples.zip Network_Resource_Name: https://doi.org/10.5066/P94GOZ7C Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/ Access_Instructions: The first link is to download the data in a zip file. The second and third links are to the landing page of the data. Although the last two links go to the same place, one is the DOI designation of the publication. Digital_Form: Digital_Transfer_Information: Format_Name: CSV Format_Version_Number: exported from Excel 365 Format_Information_Content: The zip file contains the sediment sample analysis in XLSX, CSV and shapefile formats, along with the FGDC CSDGM metadata. Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/data/samples/2017-030-FA_sedsamples.zip Network_Resource_Name: https://doi.org/10.5066/P94GOZ7C Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/ Access_Instructions: The first link is to download the data in a zip file. The second and third links are to the landing page of the data. Although the last two links go to the same place, one is the DOI designation of the publication. Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Format_Version_Number: ArcGIS 10.6.1 Format_Information_Content: The zip file contains the sediment sample analysis in XLSX, CSV and shapefile formats, along with the FGDC CSDGM metadata. Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/data/samples/2017-030-FA_sedsamples.zip Network_Resource_Name: https://doi.org/10.5066/P94GOZ7C Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2017-030-FA/ Access_Instructions: The first link is to download the data in a zip file. The second and third links are to the landing page of the data. Although the last two links go to the same place, one is the DOI designation of the publication. Fees: none Technical_Prerequisites: The zip file contains data in XLSX, CSV, and Esri shapefile formats. The user must have software capable of uncompressing the zip file and reading the data formats. Metadata_Reference_Information: Metadata_Date: 20191009 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02556-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998