Geology of the continenal terrace off the central coast of Oregon

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?

   Maloney, Neil Joseph , 1965, Geology of the continenal terrace off the central coast of Oregon: Oregon State University, Corvallis, OR.

   Other_Citation_Details: PhD. thesis

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -127.905

   East_Bounding_Coordinate: -124.087

   North_Bounding_Coordinate: 44.747

   South_Bounding_Coordinate: 43.804

3. What does it look like?

   Maloney_PhD_1965 (JPG)

   Screen grab of sample distribution, coastline, and bathymetry

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

   Beginning_Date: 1960

   Ending_Date: 1963

   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 (386)

   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 0.00167. Longitudes are given to the nearest 0.00167. 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: Oregon State University)

   Alpha numeric code based on year, month, sample number, and subcore information.

   Lithologic description

   Lithologic description (Source: Source report)

   Description of rocks and sediment, including color

   Gravel

   Amount of gravel in sample (Source: Wentworth 1938)

   No gravel sediment recorded, but is mentioned in the text, as are shells.

   Sand

   Amount of sand in sample (Source: Wentworth 1938)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	Percent
   Resolution:	1.0

   Silt

   Amount of silt in sample (Source: Wentworth 1938)

   Range of values
   Minimum:	0
   Maximum:	80
   Units:	Percent
   Resolution:	1.0

   Clay

   Amount of clay in sample (Source: Wentworth 1938)

   Range of values
   Minimum:	0
   Maximum:	69
   Units:	Percent
   Resolution:	1.0

   Median

   Median grainsize (Source: None)

   Range of values
   Minimum:	0.48
   Maximum:	9.04
   Units:	Phi
   Resolution:	0.0001

   Mean

   Mean grainsize (Source: Inman 1952)

   Range of values
   Minimum:	-2.7
   Maximum:	9
   Units:	Phi
   Resolution:	0.0001

   Standard deviation

   Standard deviation of grainsize (Source: Inman 1952)

   Range of values
   Minimum:	0.16
   Maximum:	5.55
   Units:	Phi
   Resolution:	0.01

   Skewness

   First skewness of grainsize distribution (Source: Inman, 1952)

   Range of values
   Minimum:	-1.45
   Maximum:	6.96
   Units:	Unitless
   Resolution:	0.01

   Skewness

   First skewness of grainsize distribution (Source: Inman, 1952)

   Range of values
   Minimum:	-1.45
   Maximum:	6.96
   Units:	Unitless
   Resolution:	0.01

   Kurtosis

   Kurtosis of grainsize distribution (Source: Inman, 1952)

   Range of values
   Minimum:	0.1974
   Maximum:	6.92
   Units:	Unitless
   Resolution:	0.0001

   Standard deviation

   Standard deviation of grainsize (Source: Trask, 1932)

   Range of values
   Minimum:	1.0985
   Maximum:	10.5224
   Units:	Phi
   Resolution:	0.01

   Skewness

   Skewness of grainsize distribution (Source: Trask, 1932)

   Range of values
   Minimum:	0.1544
   Maximum:	2.5154
   Units:	Unitless
   Resolution:	0.01

   Kurtosis

   Kurtosis of grainsize distribution (Source: Trask, 1932)

   Range of values
   Minimum:	0.0199
   Maximum:	0.3639
   Units:	Unitless
   Resolution:	0.01

   Rk

   Rock fragments in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	42
   Units:	Percent
   Resolution:	1.0

   Mica

   Mica in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	26
   Units:	Percent
   Resolution:	1.0

   Detrital

   Detrital grains in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	Percent
   Resolution:	1.0

   Spic

   Spicules in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	86
   Units:	Percent
   Resolution:	1.0

   Diat

   Diatoms in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	48
   Units:	Percent
   Resolution:	1.0

   Foram

   Foraminfera in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	42
   Units:	Percent
   Resolution:	1.0

   Rad

   Radiolaria in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	65
   Units:	Percent
   Resolution:	1.0

   Glauc

   Glauconite in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	Percent
   Resolution:	1.0

   Pyrite

   Pyrite in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	40
   Units:	Percent
   Resolution:	1.0

   Other

   Other grains in the sand fraction (Source: Source report)

   Range of values
   Minimum:	0
   Maximum:	5
   Units:	Percent
   Resolution:	1.0

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Neil Joseph Maloney

2. Who also contributed to the data set?

   Neil Joseph Maloney at Oregon State University for the collection and analysis of data. For inclusion into usSEABED: Digitization: Monica Iglecia (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)

3. To whom should users address questions about the data?
   College of Oceanic and Atmospheric Sciences, Oregon State University
   104 COAS Admin Bldg
   Corvallis, OR 97331-5503
   

   541-737-3504 (voice)
   

Why was the data set created?

No specific purpose is given in the dissertation.

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)

   The settling tube (Emery 1938) was used for the analysis of most of the sand samples. Samples containing shells and pebbles and some of the samples containing appreciable quantities of glauconite were sieved using a set of standard Tyler screens. Samples containing more than four percent silt and clay were dispersed in 0.2 percent Calgon solution; filtered through a millipore filter to remove seawater, and the sediment residue then covered completely with the Calgon solution to exactly 1000 cc, completely dispersed, and hydrometer readings taking at 1, 2, 15, 30, 60, 120, and 1440 minutes after the dispersion. Following the hydrometer analysis, the sediment was wet sieved through a 0.062 mm screen. The sand fraction was then weighed, and if the sand fraction comprised more than four percent of the sample, it was analyzed using the settling tube. Cumulative curves and particle size statistics were calculated using IBM 1410 and IBM 1620 computers. A split of sand from each sample was spread over the grid on a micropaleontology slide and the composition of 150 to 250 grains were noted with the aid of a binocular microscope.

   Person who carried out this activity:
   

   College of Oceanic and Atmospheric Sciences, Oregon State University
   104 COAS Admin Bldg
   Corvallis, OR 97331-5503
   

   541-737-3504 (voice)
   

   Data sources used in this process:

   • Emery, 1938

   Data sources produced in this process:

   • Maloney_PhD_1965

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?

   Navigation probably by Loran-A and/or radar. Positions given to tenths of minutes.

3. How accurate are the heights or depths?

   Depth determination by echosounder. Water depths recorded to nearest fathom; subsample depths given to nearest inch.

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

   Location, sample numbers, sampler type, simplistic rock and sediment descriptions, and water depth (Appendix 1), median grainsize, Trask statistics, Inman statistics, and percent sand, silt, clay (Appendix 2), the composition of the sediment sand fractions (Appendix 3), core descriptions (Appendix 4) were all completely digitized. Textural analyses of the rock samples (Appendix 5) and the more extensive rock sample description (Appendix 6) were not digitized and are not included in usSEABED.

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: Thesis is available at the USGS library and at other libraries.

Use_Constraints:

Cite N.J. Maloney and Oregon State University as originators of the data.

1. Who distributes the data set? (Distributor 1 of 2)
   College of Oceanic and Atmospheric Sciences, Oregon State University
   104 COAS Admin Bldg
   Corvallis, OR 97331-5503
   

   541-737-3504 (voice)
   

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

   536 (285) M297g (USGS library only)

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

   ---

1. Who distributes the data set? (Distributor 2 of 2)
   U.S. Geological Survey
   345 Middlefield Road
   Menlo Park, CA 94025
   

   650.329.5026 (voice)
   men_lib@usgs.gov
   

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

   523 (285) M297g

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 the limitations of the data due to possible imprecision due to navigational inaccuracies, statistical limitations, and digitizing errors.

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

     Report is available for viewing or checkout at the USGS library, Menlo Park, and at 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)