Stratigraphy of late Pleistocene and Holocene sediments from the Strait of Juan de Fuca

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Anderson, Franz Elmer , 1967, Stratigraphy of late Pleistocene and Holocene sediments from the Strait of Juan de Fuca: University of Washington, Seattle, WA.

   Other_Citation_Details: PhD. dissertation

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -124.62833

   East_Bounding_Coordinate: -123.61333

   North_Bounding_Coordinate: 48.50667

   South_Bounding_Coordinate: 48.16500

3. What does it look like?

   Anderson_PhD_1967 (JPG)

   Screen grab of GIS-produced sample distribution, with bathymetry and land for reference.

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 1965

   Ending_Date: 1967

   Currentness_Reference: Publication date

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: Paper

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Point (47)

   2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00017. Longitudes are given to the nearest 0.00017. Latitude and longitude values are specified in Decimal degrees.

7. How does the data set describe geographic features?

   Point

   SDTS point (Source: Source report)

   Sample number

   Sample number (Source: University of Washington)

   Alpha numeric number based on cruise and core information

   Subsample depth

   Subsample depth (included in sample number) (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	200
   Units:	Centimeter
   Resolution:	0.1

   Phi mean

   Mean grainsize of sand-silt-clay fraction (Source: Wentworth, 19XX)

   Range of values
   Minimum:	2.24
   Maximum:	9.65
   Units:	Phi
   Resolution:	0.001

   Phi standard deviation

   Standard deviation grain size of sand-silt-clay fraction (Source: Inman 1932)

   Range of values
   Minimum:	0.07
   Maximum:	3.60
   Units:	Millimeters
   Resolution:	0.01

   Sand

   Amount of sand in fine-fraction of sample (Source: Source report)

   Range of values
   Minimum:	0.0
   Maximum:	96.9
   Units:	Percent
   Resolution:	0.1

   Silt

   Amount of silt in fine-fraction of sample (Source: Source report)

   Range of values
   Minimum:	4.4
   Maximum:	87.0
   Units:	Percent
   Resolution:	0.1

   Clay

   Amount of clay in fine-fraction of sample (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	89.9
   Units:	Percent
   Resolution:	0.0001

   Gravel

   Amount of gravel in sample (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	61.4
   Units:	Percent of gravel in total sample
   Resolution:	0.01

   Total carbon

   Total carbon in sample (Source: Source report)

   Range of values
   Minimum:	0.353
   Maximum:	1.340
   Units:	Percent
   Resolution:	0.001

   Carbonate carbon

   Carbon in carbonate in sample (Source: Source report)

   Range of values
   Minimum:	0.000
   Maximum:	0.280
   Units:	Percent
   Resolution:	0.001

   Organic carbon

   Organic carbon in sample (Source: Source report)

   Range of values
   Minimum:	0.333
   Maximum:	0.640
   Units:	Percent
   Resolution:	0.001

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Franz Elmer Anderson

2. Who also contributed to the data set?

   Elmer Anderson at the University of Washington for the collection and analysis of data. For inclusion into usSEABED: Digitization: Jennifer Mendonca (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)

3. To whom should users address questions about the data?
   University of Washington
   P.O. Box 357940
   Seattle, WA 98195
   

   206-543-5060 (voice)
   

Why was the data set created?

Late Pleistocene and Holocene geologic history of the Strait of Juan de Fuca [is] preserved in the bottom sediment. The purpose of this dissertation is to determine the stratigraphic and sedimentary environments of these deposits and to examine the foraminiferal succession into the strait after deglaciation.

How was the data set created?

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

   Date: Unknown (process 1 of 1)

   Sub-samples were wet sieved through zero-phi and four-phi screens. Sand-size distribution was determined by settling tube; silts and clays by pipette analysis. Carbonate carbon and total carbon were determined by using a LECO induction furnace and a carbon determinator. For inclusion in usSEABED, textural classes were recalculated to include the gravel fraction in the percentages.

   Person who carried out this activity:
   

   University of Washington
   P.O. Box 357940
   Seattle, WA 98195
   

   206-543-5060 (voice)
   

   Data sources produced in this process:

   • Anderson_PhD_1967

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

   No estimate made for the accuracy of the data in the original report. Data digitized by the USGS and partners were visually compared to the source data, and corrected. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS.

2. How accurate are the geographic locations?

   Station positions were determined by radar fix off known land points. Because of the narrowness of the strait (less than 24 kilometers) position was within +/- 0.3 kilometers. Positions given to minute-tenths.

3. How accurate are the heights or depths?

   Water depths not recorded in report. Subsample depths given to nearest millimeter.

4. Where are the gaps in the data? What is missing?

   Numeric data completely digitized; data not digitized include foraminifera

5. How consistent are the relationships among the observations, including topology?

   Data fall within normal ranges for the given parameters.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:

Dissertation is available at the USGS library and at other libraries.

Use_Constraints:

Cite F.E. Anderson and the University of Washington as the originators of the data.

1. Who distributes the data set? (Distributor 1 of 1)
   U.S. Geological Survey
   345 Middlefield Road
   Menlo Park, CA 94025
   

   650-329-5019 (voice)
   men_lib@usgs.gov
   

   Contact_Instructions: Email preferred

2. What's the catalog number I need to order this data set?

   203(050)An 23s

3. What legal disclaimers am I supposed to read?

   Although this dataset has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data. Users of the data should be aware of limitations of the data due to possible imprecision due to navigational inaccuracies and limitations of the statistical data.

4. How can I download or order the data?
   • Availability in non-digital form:

     Paper is available at the USGS library and other libraries.

   • Cost to order the data: None

5. What hardware or software do I need in order to use the data set?

   None

Who wrote the metadata?

Dates:

Last modified: 2005

Metadata author:

U.S. Geological Survey
c/o Jane A. Reid
Geologist
400 Natural Bridges Drive
Santa Cruz, CA 95060

831-427-4727 (voice)
jareid@usgs.gov

Contact_Instructions: Email preferred

Metadata standard:

CSDGM Version 2 (FGDC-STD-001-1998)