Identification_Information: Citation: Citation_Information: Originator: David Marshall Chambers Publication_Date: 1969 Title: Holocene sedimentation and potential placer deposits on the continental shelf off the Rogue River Geospatial_Data_Presentation_Form: Paper Publication_Information: Publication_Place: Corvallis, OR Publisher: Oregon State University Other_Citation_Details: Masters thesis Description: Abstract: Changes in sea level during the past 20,000 years are recorded in sediments taken from the continental shelf off the Rogue River, Oregon. Sea level has risen approximately 125 m during the Holocene (Curray, 1965) and the general transgression has been interrupted by several stillstands and minor regressions. Box core samples taken in the area of investigation depict the nature of sedimentation during the last rise of sea level as well as present-day equilibrium sediment relationships. Three sediment facies, a recent fine-grained mud, a basal transgressive sand, and an intermediate sediment, believed to be a mixture of the other two, are defined on the shelf on the basis of textural parameters. The mud facies dominates surface sediment on the central shelf while the sand facies is the most commonly exposed on both the inner and outer shelf. The percentage of sand generally increases with depth in the box cores, often producing a change in sediment facies with depth and demonstrating the transgressive nature of the sediments. Grain-size analysis of the sand fraction of the offshore sediments reveals that offshore sands are finer-grained and better sorted than those occurring on the present beaches. The offshore sands most likely represent relict nearshore deposits and not ancient beach sands which would occur lower in the sediment sequence. High concentrations of heavy minerals are found in the sand fraction of the offshore sediments as well as in beach sands in the area. Brief stillstands of sea level may be reflected in depths where the offshore sands contain anomalously high percentages of heavy minerals. Opaque minerals, chiefly magnetite, occur in placer accumulations on the present beaches and high percentages of these minerals in the offshore sands may be indicative of submerged beach environments associated with stillstands of sea level. The magnetite may be concentrated in sufficient quantity in the placers to produce detectable magnetic anomalies, several of which have been recorded in the area. Other lines of evidence used to determine the depths of probable stillstands of sea level are bathymetric relief, the distribution of shallow water fauna in sediments from deep water, and the distribution of rounded gravels on the shelf. A compilation of the several lines of evidence suggest several stillstands of sea level associated with the Holocene transgression occurring at depths of 18, 29, 47, 71, 84, 102, and 150 meters. Purpose: The purpose of [this] investigation is to located the positions of the stillstands of sea level on the continental shelf off the Rogue River, Oregon, and thereby outline the Holocene history of sedimentation in this area. Supplemental_Information: U.S.Geological Survey research grant 14-08-0001-10766; Data digitized in 2003 by the USGS for inclusion into usSEABED. (http://walrus.wr.usgs.gov/usseabed) Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1965 Ending_Date: 1968 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.767 East_Bounding_Coordinate: -124.415 North_Bounding_Coordinate: 42.633 South_Bounding_Coordinate: 42.333 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Oregon State University Theme_Keyword: College of Oceanic and Atmospheric Sciences 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: Sedimentary Textures Theme_Keyword: Terrigenous Sediments Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Oregon, State of Place_Keyword: Rogue River Temporal: Temporal_Keyword_Thesaurus: Geologic Temporal_Keyword: Holocene Access_Constraints: Thesis is available at the USGS library and at other libraries. Use_Constraints: Cite D.M. Chambers as originator of the data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Oregon State University Contact_Address: Address_Type: Physical Address: College of Oceanic and Atmospheric Sciences Address: 104 COAS Admin Bldg City: Corvallis State_or_Province: OR Postal_Code: 97331-5503 Contact_Voice_Telephone: 541-737-3504 Browse_Graphic: Browse_Graphic_File_Name: Chambers_MS_1968 Browse_Graphic_File_Description: Screen grab of sample distribution, coastline, and bathymetry Browse_Graphic_File_Type: JPG Data_Set_Credit: David Marshall Chambers at Oregon State University 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) 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: Location, textural, and statistical data digitized for complete samples (excluding gravel) from Appendices I and II. Appendices III (textural analysis including statistics for the sand fraction only); and IV (heavy mineral percentages of the sand fraction and percent opaque minerals of heavy mineral fraction) not digitized. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: No navigational techniques given in report. Positions given to minute-tenths. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depth determination technique not given in report. Water depths recorded to nearest meter; subsample depths given to nearest centimeter. Lineage: Process_Step: Process_Description: Grain size analysis of the fine fraction (<0.062mm) was carried out by the hydrometer method as outlined by the American Society for Testing and Materials (1965). When the amount of sample was small, the silt and clay fractions were analyzed by the pipette method (Krumbein and Pettijohn, 1938). After the hydrometer or pipette analyses were completed, the samples were washed through a 0.062mm sieve and the sand fraction was analyzed using the Emery (1938) settling tube as modified by Poole (1957). Source_Used_Citation_Abbreviation: American Society for Testing and Materials, 1965 Source_Used_Citation_Abbreviation: Krumbein and Pettijohn, 1938 Source_Used_Citation_Abbreviation: Emery, 1938 Source_Used_Citation_Abbreviation: Poole, 1957 Process_Date: Unknown Source_Produced_Citation_Abbreviation: Chambers_MS_1968 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: College of Oceanic and Atmospheric Sciences, Oregon State University Contact_Address: Address_Type: Physical Address: 104 COAS Admin Bldg City: Corvallis State_or_Province: OR Postal_Code: 97331-5503 Contact_Voice_Telephone: 541-737-3504 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: 112 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00167 Longitude_Resolution: 0.00167 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: Oregon State University Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric code based on year, month, sample number, and subcore information. Attribute: Attribute_Label: Subsample depth Attribute_Definition: Subsample depth Attribute_Definition_Source: Source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.77 Attribute_Units_of_Measure: Meter Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Gravel Attribute_Definition: Amount of gravel in sample Attribute_Definition_Source: Wentworth 1938 Attribute_Domain_Values: Unrepresentable_Domain: No gravel sediment recorded but mentioned in text (p. 27) at water depths of 46, 48, 71, 104, 100, and 123 m. Attribute: Attribute_Label: Sand Attribute_Definition: Amount of sand in sample Attribute_Definition_Source: Wentworth 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.1 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Silt Attribute_Definition: Amount of silt in sample Attribute_Definition_Source: Wentworth 1938 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 68.9 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Clay Attribute_Definition: Amount of clay in sample Attribute_Definition_Source: source report Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 42.1 Attribute_Units_of_Measure: percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Mean Attribute_Definition: Mean grain size Attribute_Definition_Source: Folk and Ward 1957 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.88 Range_Domain_Maximum: 7.39 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Standard deviation Attribute_Definition: Standard deviation of grain size Attribute_Definition_Source: Folk and Ward 1957 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.29 Range_Domain_Maximum: 5.2 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Skewness Attribute_Definition: Skewness of grain size Attribute_Definition_Source: Folk and Ward 1957 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.21 Range_Domain_Maximum: 0.84 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.01 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: College of Oceanic and Atmospheric Sciences, Oregon State University Contact_Address: Address_Type: Physical Address: 104 COAS Admin Bldg City: Corvallis State_or_Province: OR Postal_Code: 97331-5503 Contact_Voice_Telephone: 541-737-3504 Resource_Description: D.M. Chambers_Masters_thesis 1969 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: Paper is available at the USGS library and other libraries. Fees: None Technical_Prerequisites: None Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 1969 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.