Sample Analysis of Sediment Texture

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?

   Rozycki, Jill E. , Scanlon, Kathryn M. , and Ackerman, Seth D. , 2003, Sample Analysis of Sediment Texture: U.S. Geological Survey 03-002, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

   Online Links:

   • <http://pubs.usgs.gov/of/2003/of03-002/>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -93.933800

   East_Bounding_Coordinate: -93.534000

   North_Bounding_Coordinate: 28.002800

   South_Bounding_Coordinate: 27.789500

3. What does it look like?

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

   Calendar_Date: 2002

   Currentness_Reference: publication date

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

   Geospatial_Data_Presentation_Form: vector digital data

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):

      • Entity point (108)

   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 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
      

7. How does the data set describe geographic features?

   ferltxtr

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   LAB_ID

   USGS unique sample identifier - Unique identification number (consisting of 2 characters and 3 numerics) generated in the sedimentation laboratory of the USGS's Woods Hole Field Center for the Atlantic Margin Texture Database (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   SAMPLE_ID

   Sample name or number as assigned in the field (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   PROJECT

   Project name - project under which samples were taken or generated; sometimes indicates more specific area (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   CRUISE

   Cruise ID - Name or number of the cruise on which the sample was collected (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   REQUESTOR

   Scientist requesting textural analysis (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   MO

   Calendar month of sample analysis (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   DAY

   Calendar day of sample analysis (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   YR

   Calendar year of sample analysis (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   LATITUDE

   Latitude - latitude in decimal degrees (south latitudes are recorded as negative values) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	27.789500
   Maximum:	28.002800

   LONGITUDE

   Longitude - longitude in decimal degrees (west longitudes are recorded as negative values) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	-93.53400
   Maximum:	-93.93380

   SMPLER

   Sampling Device- device used to collect the sample. (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Value	Definition
   	sampling device not specified or unknown

   AREA

   Area - General geographic area (general enough to easily locate on a map) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   DPH_M_

   Depth or sounding in meters - Measured depth of water overlying sediment at sample time, not corrected for tides (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	76
   Maximum:	208

   TOP

   Top Depth - top depth of the sample below the sediment-water interface, in cm (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values

   BOTT

   Bottom depth - bottom depth of sample below the sediment-water interface, in cm (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   WT_G_

   Weight - Weight of wet sample, in grams (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	9.17
   Maximum:	171.30

   SAND

   % Sand - 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) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	100

   GRVL

   % Gravel - gravel content in percent dry weight of the sample (particles with nominal diameters greater than 2 mm, -1 phi and larger) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	100

   SILT

   % Silt - silt content in percent dry weight of the sample (particles with nominal diameters less than 0.0625 mm, but greater than or equal to 0.0004 mm; 5 phi through 8 phi, inclusive) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	100

   CLAY

   % Clay - clay content in percent dry weight of the sample (particles with nominal diameters less than 0.0004 mm; 9 phi and smaller) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	100

   TOTAL

   % Total - total content in percent dry weight of gravel, sand, silt, and clay combined (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	100

   CLASS

   Classification - sediment description based on a rigorous definition. (Source: USGS Eastcoast Sediment Database data dictionary)

   MEDIAN

   Median - middle point in the grain size distribution in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	-1
   Maximum:	9

   MEAN

   Mean - avarage value in the grain size distribution in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	9

   STDEV

   Standard deviation (sorting) - standard deviation (root mean square of the deviations) of the grain size distribution in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	1
   Maximum:	5

   SKEW

   Skewness - skewness (deviation from the symmetrical form) of the grain size distribution in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	-1
   Maximum:	2

   KURT

   Kurtosis - Kurtosis (degree of curvature near the mode) of the gain size distribution in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	-2
   Maximum:	29

   M1PHI

   first mode (particle size that occurs the most number of times) in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Value	Definition
   -6	10

   M1FRQ

   Modal strength of the first mode in percent (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	11
   Maximum:	66

   M2PHI

   Second mode in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	-4
   Maximum:	10

   M2FRQ

   Modal strength of the second mode in percent (Source: USGS Eastcoast Sediment Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	17

   M3PHI

   Third mode in phi units (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	-4
   Maximum:	10

   M3FRQ

   Modal strength of the third mode in percent (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	12

   MODES

   Number of modes (Source: USGS Eastcoast Sediment Texture Database data dicitonary)

   Range of values
   Minimum:	1
   Maximum:	3

   CFP11

   Cumulative frequency percent of the 11 phi fraction and coarser ( less than 0.001 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	100
   Maximum:	100

   CFP10

   Cumulative frequency percent of the 10 phi fraction and coarser (less than 0.002 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	81
   Maximum:	100

   CFP9

   Cumulative frequency percent of the 9 phi fraction and coarser (less than 0.004 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	54
   Maximum:	100

   CFP8

   Cumulative frequency percent of the 8 phi fraction and coarser (less than 0.008 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	30
   Maximum:	99

   CFP7

   Cumulative frequency percent of the 7 phi fraction and coarser (less than 0.0016 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	14
   Maximum:	99

   CFP6

   Cumulative frequency percent of the 6 phi fraction and coarser (less than 0.031 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	5
   Maximum:	99

   CFP5

   Cumulative frequency percent of the 5 phi fraction and coarser (less than 0.062 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	2
   Maximum:	99

   CFP4

   Cumulative frequency percent of the 4 phi fraction and coarser (less than 0.125 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	1
   Maximum:	99

   CFP3

   Cumulative frequency percent of the 3 phi fraction and coarser (less than 0.250 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	99

   CFP2

   Cumulative frequency percent of the 2 phi fraction and coarser (less than 0.5 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	97

   CFP1

   Cumulative frequency percent of the 1 phi fraction and coarser (less than 0.1 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	84

   CFP0

   Cumulative frequency percent of the 0 phi fraction and coarser (less than 2 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	81

   CFPM1

   Cumulative frequency percent of the -1 phi fraction and coarser (less than 4 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	80

   CFPM2

   Cumulative frequency percent of the -2 phi fraction and coarser (less than 8 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	30

   CFPM3

   Cumulative frequency percent of the -3 phi fraction and coarser (less than 16 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	28

   CFPM4

   Cumulative frequency percent of the -4 phi fraction and coarser (less than 32 mm) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	14

   CFPM5

   Cumulative frequency percent of the -5 phi fraction and coarser (distribution is generally less than 64 mm) (Source: USGS Eastcoast Sediment Texture Database data dicitonary)

   Range of values
   Minimum:	0
   Maximum:	14

   FP11

   11 phi - weight percent of the sample in the 11 phi fraction (nominal diameter of particles greater than or equal to 0.5 um, but less than 0.001 mm); fine clay (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	19

   FP10

   10 phi - weight percent of the sample in the 10 phi fraction (nominal diameter of particles greater than or equal to 0.001 mm, but less than 0.002 mm); medium clay (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   FP9

   9 phi - weight percent of the sample in the 9 phi fraction (nominal diameter of particles greater than or equal to 0.002 mm, but less than 0.004 mm); coarse clay (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	26

   FP8

   8 phi - weight percent of the sample in the 8 phi fraction (nominal diameter of particles greater than or equal to 0.004 mm, but less than 0.008 mm); very fine silt (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	19

   FP7

   7 phi - weight percent of the sample in the 7 phi fraction (nominal diameter of particles greater than or equal to 0.008 mm, but less than 0.016 mm); fine silt (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	17

   FP6

   6 phi - weight percent of the sample in the 6 phi fraction (nominal diameter of particles greater than or equal to 0.016 mm, but less than 0.031 mm); medium silt (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	15

   FP5

   5 phi - weight percent of the sample in the 5 phi fraction (nominal diameter of particles greater than or equal to 0.031 mm, but less than 0.0625 mm); coarse silt (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	29

   FP4

   4 phi - weight percent of the sample in the 4 phi fraction (nominal diameter of particles greater than or equal to 0.0625 mm, but less than 0.125 mm); very fine sand (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	66

   FP3

   3 phi - weight percent of the sample in the 3 phi fraction (nominal diameter of particles greater than or equal to 0.125, but less than 0.25 mm); fine sand (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	61

   FP2

   2 phi - weight percent of the sample in the 2 phi fraction (nominal diameter of particles greater than or equal to 0.25 mm, but less than 0.5 mm); medium sand (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	29

   FP1

   1 phi - weight percent of the sample in the 1 phi fraction (nominal diameter of particles greater than or equal to 0.5 mm, but less than 1 mm); coarse sand (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	57

   FP0

   0 phi - weight percent of the samples in the 0 phi fraction (nominal diameter of particles greater than or equal to 1 mm, but less than 2 mm); very coarse sand (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	37

   FPM1

   -1 phi - weight percent of the sample in the -1 phi fraction (nominal diameter of particles greater than or equal to 2 mm, but less than 4 mm); very fine pebbles (granules) (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	65

   FPM2

   -2 phi - weight percent of the sample in the -2 phi fraction (nominal diameter of particles greater than or equal to 4 mm, but less than 8 mm); fine pebbles (Source: USGS Eastcoast Sediment Texture Database dictionary)

   Range of values
   Minimum:	0
   Maximum:	15

   FPM3

   -3 phi - weight percent of the sample in the -3 phi fraction (nominal diameter of particles greater than or equal to 8 mm, but less than 16 mm); medium pebbles (Source: USGS East Coast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	15

   FPM4

   -4 phi - weight percent of the sample in the -4 phi fraction (nominal diameter of particles greater that or equal to 16 mm, but less than 32 mm); coarse pebbles (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	5

   FPM5

   -5 phi - weight percent of the sample in the -5 phi fraction (nominal diameter of particles greater than or equal to 32 mm; but less than 64 mm); very coarse pebbles (Source: USGS Eastcoast Sediment Texture Database data dictionary)

   Range of values
   Minimum:	0
   Maximum:	14

   FOLK_CLASS

   texture are named according to the classification of Folk (1954, 1974) (Source: classdoc.rtf from the "SedClass" program (Eliasson&Poppe))

   SHEP_CLASS

   texture are named according to the classification of Shepard (1954) (Source: classdoc.rtf from the "SedClass" program (Eliasson&Poppe))

   HOTLINK

   Link to the location of the .gif grab sample image. For use with the "Hotlink" feature in ArcView 3.x

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Jill E. Rozycki
   • Kathryn M. Scanlon
   • Seth D. Ackerman

2. Who also contributed to the data set?

3. To whom should users address questions about the data?
   Mary Hastings
   U. S. Geological Survey
   Data Specialist
   384 Woods Hole Road
   Woods Hole, MA 02543-1598
   USA
   

   (508) 548-8800 x2289 (voice)
   (508) 457-2310 (FAX)
   phastings@usgs.gov
   

Why was the data set created?

This ArcView shapefile contains the locations of sediment samples collected and analyzed by the U. S. Geological Survey, Woods Hole Field Center starting in May 2001 and ending in December 2001. Distribution of this dataset allows the user the ability to visualize the information in a Geographic Information system.

How was the data set created?

1. From what previous works were the data drawn?

   ferltxtr.xls (source 1 of 1)

   Hastings, Mary, 20020300, East and West Flower Garden Banks Sediment Database: U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

   Type_of_Source_Media: Microsoft Excel spreadsheet

   Source_Contribution:

   The Excel spreadsheet contains the available data on grain size for the bottom sediments produced by the USGS, Woods Hole Field Center. The basic structure of the file is a matrix where records are rows representing individual samples and the columns contain information on sample identification, navigation, classifications, analyzed parameters, and comments.

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

   Date: 2002 (process 1 of 3)

   The file ferltxtr.xls was converted to a .dbf file and was imported into ArcView to create a table. This table was then converted to an ArcView shapefile to be used as a GIS layer in the project.

   Person who carried out this activity:
   

   Kathryn M. Scanlon
   U. S. Geological Survey
   Marine Geologist
   384 Woods Hole Road
   Woods Hole, MA 02543-1598
   USA
   

   (508) 548-8700 x2323 (voice)
   (508) 457-2310 (FAX)
   kscanlon
   

   Data sources used in this process:

   • ferltxtr.xls

   Data sources produced in this process:

   • ferltxtr.dbf
   • ferltxtr.shp
   • ferltxtr.shx
   • ferltxtr.sbn
   • ferltxtr.sbx
   • ferltxtr.avl

   Date: 19-Aug-2002 (process 2 of 3)

   Dataset copied and .dbf edited. Two new attributes added: "FOLK_CLASS" and "SHEP_CLASS" based on the output of graim size analysis through the program "SedClass" (L.Poppe-USGS-WH).

   Person who carried out this activity:
   

   Seth Ackerman
   USGS
   USGS Woods Hole Field Center
   Woods Hole, MA 02543
   USA
   

   508.548.8700 x2315 (voice)
   508.457.2310 (FAX)
   sackerman@usgs.gov
   

   Data sources used in this process:

   • ferltxtr

   Data sources produced in this process:

   • ferltxtr_new

   Date: 16-Jan-2003 (process 3 of 3)

   One new attribute field added: "HOTLINK" -- a link to the .gif image file for each grab sample for use with the "Hotlink" feature in ArcView 3.x

   Person who carried out this activity:
   

   Seth Ackerman
   USGS
   USGS Woods Hole Field Center
   Woods Hole, MA 02543
   USA
   

   508.548.8700 x2315 (voice)
   508.457.2310 (FAX)
   sackerman@usgs.gov
   

   Data sources used in this process:

   • ferltxtr_new

   Data sources produced in this process:

   • ferltxtr_new

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

   , 2003.

   This is part of the following larger work.

   Scanlon, Kathryn M. , Ackerman, Seth D. , and Rozycki, Jill E. , 2003, Texture, Carbonate Content, and Preliminary Maps of Surficial Sediments of the Flower Garden Banks Area, Northwestern Gulf of Mexico Outer Shelf.: Open-File Report 03-002, U.S. Geological Survey, Woods Hole, MA.

   Online Links:

   • <http://pubs.usgs.gov/of/2003/of03-002/>

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?

   This data set is complete inasmuch as it contains the sample information as released in USGS Open-File Report 03-002.

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

   .

How can someone get a copy of the data set?

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

Access_Constraints: None

Use_Constraints:

The U. S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data. Although this derived data set and its lineage dataset have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. 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.

1. Who distributes the data set? (Distributor 1 of 1)
   U.S. Geological Survey
   c/o Kathryn M. Scanlon
   USGS - Woods Hole Field Center
   Woods Hole, MA 02543
   USA
   

   508-548-8700 x2323 (voice)
   508-457-2310 (FAX)
   

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

   Request data from K. Scanlon (kscanlon@usgs.gov)

3. What legal disclaimers am I supposed to read?

   Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.

   Although all data and software published in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.

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

     Data format:	Size: 0.133

   • Cost to order the data:
   • Special instructions:

     Request data from K. Scanlon (kscanlon@usgs.gov)

Who wrote the metadata?

Dates:

Last modified: 06-Mar-2003
Last Reviewed: Mar-2002
To be reviewed: 2001

Metadata author:

Kathryn M. Scanlon
U. S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543
USA

(508) 457-8700 x2323 (voice)
(508) 457-2310 (FAX)
kscanlon@usgs.gov

(FGDC-STD-001-1998)