Radiocarbon age dating of biological material from cores collected off central California in 1999, 2006, and 2019

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Mary McGann
Originator: Charles K. Paull
Originator: Eve Lundsten
Originator: Roberto Gwiazda
Originator: Maureen A.L. Walton
Originator: Nora M. Nieminski
Originator: Thomas D. Lorenson
Originator: Homa J. Lee
Publication_Date: 20230925
Title:

Radiocarbon age dating of biological material from cores collected off central California in 1999, 2006, and 2019

Geospatial_Data_Presentation_Form: Comma-separated values
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9FWTKZQ

Publication_Information:

Publication_Place:

Pacific Coastal and Marine Science Center, Santa Cruz, California

Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested Citation: McGann, M., Paull, C.K., Lundsten, E., Gwiazda, R., Walton, M.A.L., Nieminski, N.M., Lorenson, T.D., and Lee. H.J., 2023, Radiocarbon age dating of biological material from cores collected off central California in 1999, 2006, and 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9FWTKZQ.

Online_Linkage: https://doi.org/10.5066/P9FWTKZQ

Description:

Abstract:

Results of radiocarbon age dating of planktic and benthic foraminifera collected from cores obtained in 1999, 2006, and 2019 offshore central California in the vicinity of Morro Bay.

Purpose:

Understanding the sediment dynamics of the region is critical to evaluate the structural feasibility of offshore wind farm development which is proposed for the area. These samples were taken to provide a chronology from which to assess a history of sediment mobilization via sediment gravity flows on the Morro Bay continental slope over the recent geologic past.

Supplemental_Information:

Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=O399MB https://cmgds.marine.usgs.gov/fan_info.php?fan=W406MB https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-603-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-642-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-667-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19990625
Ending_Date: 20191110

Currentness_Reference: Ground condition at time data were collected.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -121.926150
East_Bounding_Coordinate: -121.300355
North_Bounding_Coordinate: 35.776725
South_Bounding_Coordinate: 35.077682

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: environment
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Habitat

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: chemical analysis
Theme_Keyword: geochemistry
Theme_Keyword: marine chemistry
Theme_Keyword: radiometric dating
Theme_Keyword: carbon-14 analysis
Theme_Keyword: organisms
Theme_Keyword: protists
Theme_Keyword: foraminifera

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: fragile ecosystems
Theme_Keyword: chemical oceanography

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Theme_Keyword: planktic foraminifera
Theme_Keyword: benthic foraminifera

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:63bb2535d34e92aad3cd27ae

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean

Access_Constraints: None
Use_Constraints:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 650-329-4979
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Native_Data_Set_Environment: Mac OSX 12.6.3, Microsoft Excel 16.7 for Mac.
Cross_Reference:

Citation_Information:

Originator: M. Stuiver
Originator: H.A. Polach
Publication_Date: 1977
Title: Discussion: reporting of 14C data
Other_Citation_Details:

Stuiver, M., and Polach, H.A., 1977, Discussion: Reporting of 14C data: Radiocarbon, v. 19, p. 355-363.

Online_Linkage: https://doi.org/10.1017/S0033822200003672

Cross_Reference:

Citation_Information:

Originator: M. Stuiver
Publication_Date: 1980
Title: Workshop on 14C data reporting
Other_Citation_Details:

Stuiver, M., 1980, Workshop on 14C data reporting. Radiocarbon, v. 2, p. 964-966.

Online_Linkage: https://doi.org/10.1017/S0033822200010389

Cross_Reference:

Citation_Information:

Originator: M. Stuiver
Originator: P.J. Reimer
Publication_Date: 1993
Title:

Extended 14C Data Base and Revised CALIB 3.0 14C Age Calibration Program

Other_Citation_Details:

Stuiver, M., and Reimer, P.J., 1993: Radiocarbon, v. 35, p. 215-230.

Online_Linkage: https://doi.org/10.1017/S0033822200013904

Cross_Reference:

Citation_Information:

Originator: B.L. Ingram
Originator: J.R. Southon
Publication_Date: 1996
Title: Reservoir ages in eastern Pacific coastal and estuarine waters
Other_Citation_Details:

Ingram, B.L., and Southon, J.R., 1996, Reservoir ages in eastern Pacific coastal and estuarine water: Radiocarbon, v. 38, p. 573-582.

Online_Linkage: https://doi.org/10.1017/S0033822200030101

Cross_Reference:

Citation_Information:

Originator: S.S. Kienast
Originator: J.L. McKay
Publication_Date: 2001
Title:

Sea surface temperatures in the subarctic northeast Pacific reflect millennial-scale climate oscillations during the last 16 kyrs

Other_Citation_Details:

Kienast, S.S., and McKay, J.L., 2001, Sea surface temperatures in the subarctic northeast Pacific reflect millennial-scale climate oscillations during the last 16 kyrs: Geophysical Research Letters, v. 2, p. 1563-1566.

Online_Linkage: https://doi.org/10.1029/2000GL012543

Cross_Reference:

Citation_Information:

Originator: P.J. Reimer
Originator: R.W. Reimer
Publication_Date: 2001
Title:

A marine reservoir correction database and on-line interface. Accessed in 2022 as: 14CHRONO Marine 20 Reservoir Database

Other_Citation_Details:

Reimer, P.J., and Reimer, R.W., 2001, A marine reservoir correction database and on-line interface: Radiocarbon v. 43, p. 461-463.

Online_Linkage: https://calib.org/marine/

Cross_Reference:

Citation_Information:

Originator: T.J. Heaton
Originator: P. Kohler
Originator: M. Butzin
Originator: E. Bard
Originator: R.W. Reimer
Originator: W.E.N. Austin
Originator: C. Bronk Ramsey
Originator: P.M. Grootes
Originator: K.A. Hughen
Originator: B. Kromer
Originator: P.J. Reimer
Originator: J. Adkins
Originator: A. Burke
Originator: M.S. Cook
Originator: J. Olsen
Originator: L.C. Skinner
Publication_Date: 2020
Title: The marine radiocarbon age calibration curve (0-55,000 ca BP)
Other_Citation_Details:

Heaton, T.J., Kohler, P., Butzin, M., Bard, E., Reimer, R.W., Austin, W.E.N., Bronk Ramsey, C., Grootes, P.M., Hughen, K.A., Kromer, B., Reimer, P.J., Adkins, J., Burke, A., Cook, M.S., Olsen J., and Skinner, L.C., 2020, Marine20 - The marine radiocarbon age calibration curve (0-55,000 ca BP): Radiocarbon, v. 62, p. 779-820.

Online_Linkage: https://doi.org/10.1017/RDC.2020.68

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The age and associated error of the radiocarbon ages are calculated from the fraction modern and its error and the ages are reported according to conventions that the radiocarbon community has adopted. The Conventional Radiocarbon Age is always reported rounded (the NOSAMS convention is reported at https://www2.whoi.edu/site/nosams/calculations-and-reporting-of-results). The fraction modern values and the ages are listed in this data release, so there can be no misinterpretations of these data. The age for the calibration (not rounded) can be calculated using -8033 multiplied by the log normal of the fraction modern.

Logical_Consistency_Report:

Data were checked for logical consistency by the NOSAMS staff before release, and by the USGS staff compiling this data release, to confirm that numerical values were not outside a reasonable range for a particular field.

Completeness_Report:

Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the metadata for each part of this data release carefully for additional details.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. The horizontal accuracy was determined with the ship's GPS navigation (SIMRAD MX 512 Navigation System) which is accurate to 5 m.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

A formal accuracy assessment of the vertical positional information in the data set has not been conducted. Depth was determined using a using a Knudsen 320B/R Engineering System with a stated accuracy of 5 percent.

Lineage:

Process_Step:

Process_Description:

Samples for radiocarbon analysis were measured by accelerator mass spectrometry (AMS) at the National Ocean Sciences AMS (NOSAMS) Facility of Woods Hole Oceanographic Institution. The radiocarbon ages were obtained by a ratio of 14C to 12C using a 14C half-life of 5568 years (Stuiver and Polach, 1977) and then were converted to calibrated calendar ages (cal years BP), with BP (Before Present) equal to 1950, using the CALIB 8.2 program (Stuiver and Reimer, 1993; website accessed in 2022 and 2023) and the Marine20 calibration curve (Heaton and others, 2020). The calibrated ages are reported as the median probability ages at the 95 percent confidence level (2 sigma range). The regional marine radiocarbon reservoir correction (delta R), as defined by Ingram and Southon (1996), used for the planktic foraminiferal samples (delta R equals 59) was based on 40 samples located from 35 degrees North latitude to 40 degrees North latitude in the 14CHRONO Marine 20 Reservoir Database (Reimer and Reimer, 2001, accessed in 2022 at http://calib.org/marine/), and (delta R equals 1100) years for the benthic foraminiferal samples was a reinterpretation of Kienast and McKay, 2001 based on Heaton and others, 2020. The error in the values of the regional deviation were based on the same data set and were delta R error equals 134 for the planktic foraminiferal samples and delta R error equals 200 years for the benthic foraminiferal samples.

Process_Date: 2022

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 150

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.978698214

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Attribute table
Entity_Type_Definition:

Table containing attribute information associated with the data set

Entity_Type_Definition_Source: Producer defined.

Attribute:

Attribute_Label: USGS_FAN
Attribute_Definition: Unique U.S. Geological Survey field activity identifier.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Unique U.S. Geological Survey field activity identifier.

Attribute:

Attribute_Label: Core_ID
Attribute_Definition: name of core
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Unrepresentable_Domain:

Unique alphanumberic identifier for the core given in the field. JPC refers to a jumbo piston core; VC refers to a vibracore; PC refers to a push core.

Attribute:

Attribute_Label: Cruise_Number
Attribute_Definition:

Unique alphanumeric identifier given to the cruise. BH refers to the M/V Bold Horizon; OO refers to the M/V Ocean Olympic. NAN indicates the parameter was not determined because the cruise was on the Monterey Bay Aquarium Research Institute's R/V Western Flyer and no cruise number is assigned to these cruises.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Presence or absence of each alphanumeric identifier
Enumerated_Domain_Value_Definition:

Cruise was on the M/V Bold Horizon, the M/V Ocean Olympic, or the R/V Western Flyer.

Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute:

Attribute_Label: Dive_Number
Attribute_Definition:

Unique alphanumeric identifier given to the dive. DR refers to the Monterey Bay Aquarium Research Institute's remotely operated vehicle Doc Ricketts; T refers to the Monterey Bay Aquarium Research Institute's remotely operated vehicle Tiburon. NAN indicates the core was not obtained with an ROV but off the side of the vessel.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Unrepresentable_Domain: List of Dive ID numbers

Attribute:

Attribute_Label: Date_Collected
Attribute_Definition: Date [YYYY-MM-DD]
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1999-06-25
Range_Domain_Maximum: 2019-11-10

Attribute:

Attribute_Label: Latitude
Attribute_Definition:

Latitude of sample location. 9999 indicates the parameter was not determined.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 35.077682
Range_Domain_Maximum: 35.776725
Attribute_Units_of_Measure: decimal degrees
Attribute_Measurement_Resolution: 0.000001

Attribute:

Attribute_Label: Longitude
Attribute_Definition:

Longitude of sample location. 9999 indicates the parameter was not determined.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -121.300355
Range_Domain_Maximum: -121.926150
Attribute_Units_of_Measure: decimal degrees
Attribute_Measurement_Resolution: 0.000001

Attribute:

Attribute_Label: Water_Depth_m
Attribute_Definition:

Water depth of core collection. 9999 indicates the parameter was not determined.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 636.00
Range_Domain_Maximum: 1126.00
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Core_Section_Number
Attribute_Definition:

Section number of core. Core sections are assigned from the top of the core to the bottom in intervals of 150 cm (for example, section 1 is 0-150 cm, section 2 is 150-300 cm).

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 8
Attribute_Units_of_Measure: section
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Sample_Upper_Depth_Limit_cm
Attribute_Definition: Upper depth of sampling interval in core in centimeters.
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 698.5
Attribute_Units_of_Measure: centimeters
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Sample_Lower_Depth_Limit_cm
Attribute_Definition: Lower depth of sampling interval in core in centimeters.
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2.0
Range_Domain_Maximum: 700.5
Attribute_Units_of_Measure: centimeters
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Material_Radiocarbon_Dated
Attribute_Definition: Biological specimen type
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Presence or absence of biological type
Enumerated_Domain_Value_Definition: Biological type used for radiocarbon dating.
Enumerated_Domain_Value_Definition_Source: Producer defined

Attribute:

Attribute_Label: Radiocarbon_Sample_Weight_mg
Attribute_Definition:

The weight of the radiocarbon sample measured on a microbalance prior to submission for dating. 9999 indicates the parameter was not determined.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.59
Range_Domain_Maximum: 15.41
Attribute_Units_of_Measure: milligrams
Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Approximate_Radiocarbon_Sample_Weight_mg
Attribute_Definition:

An approximate weight of the radiocarbon sample prior to submission for dating, based on an estimated from pre-weighed standards instead of weighing on a microbalance. 9999 indicates the parameter was not determined.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2
Range_Domain_Maximum: 14
Attribute_Units_of_Measure: milligrams
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: NOSAMS_Accession_Number
Attribute_Definition: Lab specific ID from AMS facility.
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Unrepresentable_Domain: List of lab IDs

Attribute:

Attribute_Label: Fraction_Modern
Attribute_Definition:

Fraction modern is a measurement of the deviation of the delta Carbon 14 to delta Carbon 12 ratio of a sample from modern carbon (Stuiver and Polach, 1977; Stuiver, 1980).

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -0.0006
Range_Domain_Maximum: 0.8942
Attribute_Units_of_Measure: unitless
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: Fraction_Modern_Error
Attribute_Definition:

Fraction modern error is a measurement of the deviation of the delta Carbon 14 to delta Carbon 12 ratio of a sample from modern carbon (Stuiver and Polach, 1977; Stuiver, 1980).

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0003
Range_Domain_Maximum: 0.0029
Attribute_Units_of_Measure: unitless
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: Conv_Radiocarbon_Age_yrs_BP
Attribute_Definition:

Conventional Radiocarbon Age calculated using the radiocarbon decay equation (Stuiver and Polach, 1977; Stuiver, 1980) with BP (Before Present) equal to 1950. Values with the "greater than" sign denote those samples in which the limit of the measuring instrument was exceeded. The maximum range domain is greater than 52,000 years.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 900
Range_Domain_Maximum: 52000
Attribute_Units_of_Measure: years
Attribute_Measurement_Resolution: 10

Attribute:

Attribute_Label: Conventional_Radiocarbon_Age_Error
Attribute_Definition:

Standard error for Conventional Radiocarbon Age. 9999 indicates the parameter was not determined.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 15
Range_Domain_Maximum: 6700
Attribute_Units_of_Measure: years
Attribute_Measurement_Resolution: 5

Attribute:

Attribute_Label: Delta_C13_per_mil
Attribute_Definition:

delta C13 is a measure of the ratio of stable isotopes Carbon13 to Carbon12, reported in parts per thousand (per mil). 9999 indicates the parameter was not determined.

Attribute_Definition_Source: standard reporting value in isotope chemistry
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1.35
Range_Domain_Maximum: 1.03
Attribute_Units_of_Measure: parts per thousand (per mil)
Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Delta_C14_per_mil
Attribute_Definition:

The relative difference between the absolute international standard (base year 1950) and sample activity corrected for age and delta Carbon13.

Attribute_Definition_Source: defined in Stuiver and Polach (1977) and Stuiver (1980).
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1000.58
Range_Domain_Maximum: -113.25
Attribute_Units_of_Measure: parts per thousand (per mil)
Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: dR_yrs_BP
Attribute_Definition:

The value of the regional deviation from the ocean reservoir age as defined by Ingram and Southon (1996). The regional marine radiocarbon reservoir correction (delta R) used for the planktic foraminiferal samples was delta R equals 59 and delta R equals 1100 years for the benthic foraminiferal samples.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 59
Range_Domain_Maximum: 1100
Attribute_Units_of_Measure: year
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: dR_error_yrs_BP
Attribute_Definition:

Error in the value of the regional deviation from the ocean reservoir age as defined by Ingram and Southon (1996). The regional marine radiocarbon reservoir correction error used for the planktic foraminiferal samples was delta R error equals 134 years and delta R error equals 200 years for the benthic foraminiferal samples.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 134
Range_Domain_Maximum: 200
Attribute_Units_of_Measure: year
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Min_Calib_Age_cal_yrs_BP_95_percent_conf
Attribute_Definition:

Minimum Calibration Age in calibrated years BP at the 95 percent confidence level (2 sigma range) with BP (Before Present) equal to 1950. Determined using the CALIB 8.2 program (Stuiver and Reimer, 1993) and the Marine20 calibration curve (Heaton and others, 2020). 9999 indicates the parameter was not determined.

Attribute_Definition_Source: defined in Heaton and others (2020).
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4
Range_Domain_Maximum: 49935
Attribute_Units_of_Measure: year
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Max_Calib_Age_cal_yrs_BP_95_percent_conf
Attribute_Definition:

Maximum Calibration Age in calibrated years BP at the 95 percent confidence level (2 sigma range) with BP (Before Present) equal to 1950. Determined using the CALIB 8.2 program (Stuiver and Reimer, 1993) and the Marine20 calibration curve (Heaton and others, 2020). 9999 indicates the parameter was not determined.

Attribute_Definition_Source: defined in Heaton and others (2020).
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 512
Range_Domain_Maximum: 54990
Attribute_Units_of_Measure: year
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Med_Calib_Age_cal_yrs_BP_95_percent_conf
Attribute_Definition:

Median Calibration Age in calibrated years BP at the 95 percent confidence level (2 sigma range) with BP (Before Present) equal to 1950. Modern equal to greater than 1950. Determined using the CALIB 8.2 program (Stuiver and Reimer, 1993) and the Marine20 calibration curve (Heaton and others, 2020). 9999 indicates the parameter was not determined.

Attribute_Definition_Source: defined in Heaton and others (2020).
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 296
Range_Domain_Maximum: 52876
Attribute_Units_of_Measure: year
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Med_Calib_Age_Correc_Error_cal_yrs_BP
Attribute_Definition:

Median Calibration Age error in calibrated years BP with BP (Before Present) equal to 1950. 9999 indicates the parameter was not determined. Calculated using CALIB 8.2 software (Stuiver and Reimer, 1993) and the Marine20 calibration curve (Heaton and others, 2020).

Attribute_Definition_Source: defined in Heaton and others (2020).
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 135
Range_Domain_Maximum: 4502
Attribute_Units_of_Measure: year
Attribute_Measurement_Resolution: 1

Overview_Description:

Entity_and_Attribute_Overview:

The first line of the comma-separated values file is a header line.

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - ScienceBase

Contact_Address:

Address_Type: mailing and physical
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225

Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov

Resource_Description:

These data are available in a comma-delimited text file (Central_California_AgeData_data.csv) which contains results from radiocarbon age dating of biological material from cores collected off central California in 1999, 2006, and 2019.

Distribution_Liability:

Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: comma-separated values
Format_Version_Number: Microsoft Excel 16.68 for Mac
Format_Information_Content: .csv file
File_Decompression_Technique: none
Transfer_Size: 0.03911

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/63bb2535d34e92aad3cd27ae

Network_Resource_Name: https://doi.org/10.5066/P9FWTKZQ

Access_Instructions:

Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to the landing page for the entire data release.

Fees: None.

Technical_Prerequisites: These data can be viewed with any text editor software.

Metadata_Reference_Information:

Metadata_Date: 20230925
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P9FWTKZQ/Central_California_AgeData_metadata.html>