Sediment distribution on a stream-dominated continental margin, Northern California; Implications from heavy-mineral studies

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Florence L. Wong
Publication_Date: 1995
Title:
Sediment distribution on a stream-dominated continental margin, Northern California; Implications from heavy-mineral studies
Geospatial_Data_Presentation_Form: Paper
Series_Information:
Series_Name: Open-file report
Issue_Identification: 95-614
Publication_Information:
Publication_Place: Menlo Park, CA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Data from USGS cruises S977NC (<http://walrus.wr.usgs.gov/infobank/s/s977nc/html/s-9-77-nc.meta.html>) and S1278NC (<http://walrus.wr.usgs.gov/infobank/s/s1278nc/html/s-12-78-nc.meta.html>. Additional data from Humboldt (CA) State University cruise TO, ER, and K, and from several adjacent rivers.
Online_Linkage: <http://onlinepubs.er.usgs.gov/djvu/OFR/1980/ofr_95_614.djvu>
Description:
Abstract: No formal abstract is given.
Purpose:
"The purpose of this study is to use heavy minerals to distinguish the river sources off northern California, to refine the dispersal pattern previously identified for Klamath sediment, and to determine the contribution of the Eel River to the shelf and slope sediments."
Supplemental_Information:
"This research was supported by the Pacific OCS Office of the Bureau of Land Management in Los Angeles and we are appreciative of their support." Data concatenated with OFR 80-1080 in 2005 for inclusion into usSEABED (<http://walrus.wr.usgs.gov/usseabed>)
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19771111
Ending_Date: 19781112
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -125.0117
East_Bounding_Coordinate: -124.0750
North_Bounding_Coordinate: 41.9333
South_Bounding_Coordinate: 40.2917
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Oceans and Estuaries
Theme_Keyword: Location
Theme_Keyword: GeoscientificInformation
Theme:
Theme_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Earth Science Keyword. Version 5.3.3
Theme_Keyword: Marine Sediments
Theme_Keyword: Sediment Composition
Theme_Keyword: Sedimentary Textures
Theme_Keyword: Terrigenous Sediments
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: Branch of Pacific Marine Geology
Theme_Keyword: Coastal and Marine Geology Program
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Eel River
Place_Keyword: Klamath River
Place_Keyword: Mad River
Place_Keyword: Mattole River
Place_Keyword: Redwood Creek
Place_Keyword: Smith River
Place_Keyword: California
Access_Constraints:
None. Paper copy of report is available through the USGS, and is also available online.
Use_Constraints:
Cite Florence Wong and the U.S. Geological Survey as the originators of the data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: United States Geological Survey
Contact_Address:
Address_Type: Mail
Address: USGS Information Services
Address: Box 25286
City: Denver
State_or_Province: CO
Postal_Code: 80225
Contact_Voice_Telephone: 1-800-ASK-USGS
Browse_Graphic:
Browse_Graphic_File_Name: OFR_95-614
Browse_Graphic_File_Description:
Screen grab of GIS-produced sample distribution, with bathymetry and land for reference.
Browse_Graphic_File_Type: JPG
Data_Set_Credit:
Michael E. Field, Samuel H. Clarke, Jr. and Michael E. White at the USGS for collection of samples and Florence Wong for the analysis of data. For usSEABED, formatting: Jane Reid (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)
Native_Data_Set_Environment:
Tkme: Another editor for formal metadata by Peter N. Schweitzer (U.S. Geological Survey, Reston, VA 22092), version 2.9.13, Microsoft Windows Version 5.1; Microsoft Word 2000 9.0
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
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.
Logical_Consistency_Report: Data fall within normal ranges for the given parameters.
Completeness_Report:
No estimate made for original data. For inclusion into usSEABED, all data in the report were included.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
From OFR 80-1080: "Positioning data were obtained at sea using satellite navigation and Loran C systems, and a shipborne electronic ranging system employing shore- based transponders. Radar was used infrequently for positioning where terrain masking or equipment malfunctions were encountered. Data from the satellite and Loran C systems were integrated by means of a Dead Reckoning computer (DRC). Positions derived from the DRC and electronic ranging systems initially were plotted separately and weighted according to their relative accuracy; subsequently these data were corrected and merged to produce maps of position location for geophysical tracklines and sampling stations. Estimated position accuracy ranges from + 50 m where positions were determined principally by electronic ranging (approximately 90 percent of the cruise) to an average of about + 500 m where DRC or radar positions were used exclusively (approximately 10 percent of the cruise). Positions given to 0.0001 decimal degrees."
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Precision bathymetric and shallow subbottom records were obtained using 12 kHz and 3.5 kHz profiling systems employing hull-mounted transducers and hydrophones. Subsample depths given as nearest centimeter.
Lineage:
Process_Step:
Process_Description:
" The subsamples were treated with hydrogen peroxide and washed through 250-gm and retained on 63-gm sieves. This size range includes most of the heavy minerals in the sand-size fraction. Heavy minerals were separated in tetrabromoethane diluted to a specific gravity of 2.89 + 0.01. Sample weights taken before and after separation were used to determine an approximate heavy-mineral weight percent (Appendix). Heavy-mineral grains were permanently mounted on glass slides in piccolyte (r.i. = 1.52). Except for a few samples, more than 300 grains were counted on each slide to include at least 200 nonopaque grains. The data were recalculated to 100 percent nonopaque grains (Appendix) and are summarized in Table 2." Textural data from OFR 80-1080 by M.E. Field, S. Clarke, Jr. and M. E. White. Metadata for that report is given separately.
Process_Date: Unknown
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 83
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
Geographic_Coordinate_Units: Decimal degrees
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Point
Entity_Type_Definition: SDTS point
Entity_Type_Definition_Source: Source report
Attribute:
Attribute_Label: Sample number
Attribute_Definition: Sample number
Attribute_Definition_Source: US Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Alpha numeric number based on cruise and core information
Attribute:
Attribute_Label: Water depth
Attribute_Definition: Depth of water at sample site
Attribute_Definition_Source: Source report
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 2467
Attribute_Units_of_Measure: Meters
Attribute_Measurement_Resolution: 1.0
Attribute:
Attribute_Label: Mineral identification and percentage
Attribute_Definition: Mineral identification and percentage
Attribute_Definition_Source: Wentworth, 1932
Attribute_Domain_Values:
Unrepresentable_Domain:
Percentages of actinolite, apatite, augite, basaltic hornblende, blue-green amphibole, brown hornblende, colorless clinopyroxene, enstatite, epidote, garnet, glaucophane, green hornblende, heavy minerals , hypersthene, lawsonite, opaque minerals, other minerals, rock fragments, spinel, termolite, tourmaline, unknown minerals, and zircon
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: United States Geological Survey
Contact_Address:
Address_Type: Mail
Address: USGS Information Services
Address: Box 25286
City: Denver
State_or_Province: CO
Postal_Code: 80225
Contact_Voice_Telephone: 1-800-ASK-USGS
Resource_Description: Open file report 95-614
Distribution_Liability:
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.
Standard_Order_Process:
Non-digital_Form:
Report is available through the USGS; scanned images are also available online at: <http://pubs.er.usgs.gov/pubs/ofr/ofr95614>
Fees: Unknown
Technical_Prerequisites:
Plug-in not required, but best viewed with downloadable program DjVu at <http://www.lizardtech.com/download/dl_options.php?page=plugins>
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Metadata_Reference_Information:
Metadata_Date: 2005
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Jane A. Reid
Contact_Position: Geologist
Contact_Address:
Address_Type: Physical and mail
Address: 400 Natural Bridges Drive
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4727
Contact_Electronic_Mail_Address: jareid@usgs.gov
Contact_Instructions: Email preferred
Metadata_Standard_Name: CSDGM Version 2
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: None
Metadata_Use_Constraints:
Metadata was written by a user of the data. Any information contained in the physical report is authoritative and supercedes any information given here.

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