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.