South Florida mangrove peat radiocarbon metadata

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Khan, Nicole S.
Originator: Toth, Lauren T.
Publication_Date: 20220706
Title: South Florida mangrove peat radiocarbon metadata
Geospatial_Data_Presentation_Form: tabular digital data
Larger_Work_Citation:

Citation_Information:

Originator: Khan, Nicole S.
Originator: Toth, Lauren T.
Originator: Moyer, Ryan P.
Originator: Shaw, Jaimie E.
Originator: Capar, Paulina
Originator: Kemp, Andrew C.
Originator: Engelhart, Simon E.
Originator: Horton, Benjamin P.
Publication_Date: 20220706
Title: Mangrove Peat Radiocarbon Ages From Snipe and Swan Key, FL
Series_Information:

Series_Name: U.S. Geological Survey data release
Issue_Identification: doi:10.5066/P9OOL3L4

Publication_Information:

Publication_Place: St. Petersburg, Florida
Publisher:

U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center

Online_Linkage: https://doi.org/10.5066/P9OOL3L4

Description:

Abstract:

In 2016, U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) researchers and academic collaborators collected cores of mangrove peat from two islands in the Florida Keys: Snipe Key (24.679°N, 81.653°W) and Swan Key (25.349°N, 80.251°W). This data release contains the radiocarbon ages and associated data for peat samples analyzed throughout the two cores (SNK-16-C1 and SBC-16-C10).

Purpose:

Data were obtained to reconstruct millennial-scale variability in sea-level change of across the Florida Keys in Khan and others (2022).

Supplemental_Information:

The cores collected were assigned a Field Activity Number (FAN), 2016-344-FA. FANs are unique identifiers assigned by the USGS to provide more information about the activities conducted in the field for a study. Please visit the Coastal and Marine Geoscience Data System (CMGDS) field activity webpage for more information about the FAN related to this dataset, https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-344-FA.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2016

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -81.653
East_Bounding_Coordinate: -80.251
North_Bounding_Coordinate: 25.349
South_Bounding_Coordinate: 24.679

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:f335e6d7-c046-41ce-b5c2-b346e3a0e1dc

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: radiometric dating
Theme_Keyword: core analysis
Theme_Keyword: push coring
Theme_Keyword: geochronology
Theme_Keyword: paleoceanography
Theme_Keyword: sea-level change

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Florida Keys

Temporal:

Temporal_Keyword_Thesaurus: USGS Thesaurus
Temporal_Keyword: Holocene

Access_Constraints: None
Use_Constraints: None
Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Lauren T. Toth
Contact_Organization: SOUTHEAST REGION: ST. PETE COASTAL & MARINE SC

Contact_Position: Research Physical Scientist
Contact_Address:

Address_Type: mailing and physical
Address: 600 4Th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: US

Contact_Voice_Telephone: 727-502-8029
Contact_Electronic_Mail_Address: ltoth@usgs.gov

Cross_Reference:

Citation_Information:

Originator: Khan, Nicole S.
Originator: Ashe, Erica
Originator: Moyer, Ryan P.
Originator: Kemp, Andrew C.
Originator: Engelhart, Simon E.
Originator: Brain, Matthew J.
Originator: Toth, Lauren T.
Originator: Chappel, Amanda
Originator: Christie, Margaret
Originator: Kopp, Robert E.
Originator: Horton, Benjamin P.
Publication_Date: 20220730
Title:

Relative sea-level change in South Florida during the past ~5,000 years

Series_Information:

Series_Name: Global and Planetary Change
Issue_Identification: Volume 216

Online_Linkage: https://doi.org/10.1016/j.gloplacha.2022.103902

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.

Logical_Consistency_Report: No formal logical accuracy tests were conducted.
Completeness_Report:

Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: No formal positional accuracy tests were conducted.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: No formal positional accuracy tests were conducted.

Lineage:

Process_Step:

Process_Description:

USGS SPCMSC researchers and academic collaborators collected at total of 91 samples of plant macrofossils or bulk mangrove peat throughout cores SNK-16-C1 and SBC-16-C10, from Snipe Key and Swan Key, respectively, to be used for radiocarbon dating. Macrofossils of mangrove trunks or branches, terminal stems, or prop root bark were collected for dating, where possible. These samples were cleaned of debris using sterile forceps under a binocular microscope before being sent to Woods Hole Oceanographic Institution’s National Ocean Science Accelerator Mass Spectrometry (NOSAMS) laboratory for analysis. At NOSAMS, the macrofossil samples were acid-base-acid pretreated prior to analysis to remove carbonates and other impurities. In parts of the core where there were no macrofossils, researchers instead extracted a 1-centimeter (cm) thick layer of bulk mangrove peat. Those samples were passed through a 63-micron sieve and the <63-micron fractions of the peat samples were transferred onto a clean fiberglass filter and dried at 55 degrees Celsius. Then, the dried bulk peat samples on the filters were shipped to NOSAMS for radiocarbon analysis. The bulk peat samples were acid pretreated by NOSAMS prior to analysis. For additional information on sample preparation, see Khan and others (2022). For additional information about radiocarbon analysis see the NOSAMS website (https://www2.whoi.edu/site/nosams/).

Process_Date: 2017

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: 91

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label:

Snipe_and_Swan_Key_mangrove_peat_radiocarbon_data.csv, Snipe_and_Swan_Key_mangrove_peat_radiocarbon_data.xlsx

Entity_Type_Definition:

Sample description and radiocarbon data from mangrove peat cores collected at Snipe Key and Swan Key, Florida.

Entity_Type_Definition_Source: USGS

Attribute:

Attribute_Label: Core ID
Attribute_Definition:

A unique identifier (ID) for the two cores analyzed in this study.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain:

The core ID is a combination of the site where the core was collected (Snipe Key=SNK, Swan Key=SBC), the year the cores were collected (2016), and the core number (Snipe Key Core #1=C1, Swan Key Core #10=C10).

Attribute:

Attribute_Label: Accession Number
Attribute_Definition:

A unique identifier for each sample assigned by the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) radiocarbon laboratory.

Attribute_Definition_Source: NOSAMS (https://www2.whoi.edu/site/nosams/)
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: OS-126725
Range_Domain_Maximum: OS-138073
Attribute_Units_of_Measure: sample number

Attribute:

Attribute_Label: Depth in core (cm)
Attribute_Definition:

The depth in centimeters (cm) from the top of each core where each sample was collected.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 8.5
Range_Domain_Maximum: 750.5
Attribute_Units_of_Measure: centimeters (cm)

Attribute:

Attribute_Label: Sample type
Attribute_Definition:

The type of peat material (Bulk=bulk peat sample, Macro=macrofossil of mangrove wood) that was sampled for radiocarbon dating.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Bulk
Enumerated_Domain_Value_Definition:

The fine-fraction of bulk mangrove peat (<63 micron) was sampled from the core for radiocarbon dating.

Enumerated_Domain_Value_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Macro
Enumerated_Domain_Value_Definition:

Plant macrofossils of mangrove wood (trunk or branches), terminal stems, or prop root bark were sampled from the core for radiocarbon dating.

Enumerated_Domain_Value_Definition_Source: USGS

Attribute:

Attribute_Label: Process
Attribute_Definition:

The method (process) used by the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) radiocarbon laboratory to determine the radiocarbon ages of the samples.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (OC) Organic Carbon
Enumerated_Domain_Value_Definition:

This process is used for plant/wood and charcoal samples. These samples first undergo a series of acid-base-acid leaches to remove inorganic carbon and mobile organic acid phases. After that pre-treatment, the organic carbon samples are combusted at a high temperature to produce carbon dioxide for radiocarbon analysis.

Enumerated_Domain_Value_Definition_Source: NOSAMS (https://www2.whoi.edu/site/nosams/)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (GS) Gas Sample
Enumerated_Domain_Value_Definition:

These samples are submitted to NOSAMS as ampoules of carbon dioxide. Those ampoules are cracked, quantified, split (if required), and transferred to a reaction tube for reduction to pure carbon. The carbon dioxide is reduced with use of a catalyst (iron or cobalt) in the presence of excess hydrogen.

Enumerated_Domain_Value_Definition_Source: NOSAMS (https://www2.whoi.edu/site/nosams/)

Attribute:

Attribute_Label: F modern
Attribute_Definition:

F modern=Fraction modern, which is a measurement of the deviation of the carbon-14 to carbon-12 (14C/12C) ratio of a sample from “Modern.” Modern is defined as 95% of the radiocarbon concentration (in 1950 C.E.).

Attribute_Definition_Source: NOSAMS (https://www2.whoi.edu/site/nosams/)
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.5049
Range_Domain_Maximum: 1.2058
Attribute_Units_of_Measure: a unitless ratio

Attribute:

Attribute_Label: F modern uncertainty
Attribute_Definition:

The uncertainty in the determination of the deviation of a sample's radiocarbon content from a modern standard (F modern).

Attribute_Definition_Source: NOSAMS (https://www2.whoi.edu/site/nosams/)
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0013
Range_Domain_Maximum: 0.0035
Attribute_Units_of_Measure: unitless uncertainty on the fraction modern ratio

Attribute:

Attribute_Label: Age BP
Attribute_Definition:

The conventional radiocarbon age of the sample in years before present (BP) where "present" by convention is 1950 C.E. If the radiocarbon age was younger than 1950, then the age is listed as ">Modern".

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 105
Range_Domain_Maximum: 5490
Attribute_Units_of_Measure: years before 1950

Attribute:

Attribute_Label: Age BP uncertainty
Attribute_Definition:

The uncertainty in the conventional radiocarbon age of the sample in years. Modern (younger than 1950 C.E.) radiocarbon ages have no uncertainty so in the case of a modern age, this field is blank.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 15
Range_Domain_Maximum: 30
Attribute_Units_of_Measure: radiocarbon years

Attribute:

Attribute_Label: d13C
Attribute_Definition:

A measure of the fractionation of 12C to 13C, expressed as the ratio of 13C to 12C (delta 13C or d13C). This value is used to correct the fraction modern and the conventional radiocarbon age of the sample, measured by the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS). If blank, the d13C of the sample was not measured by NOSAMS.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -30.15
Range_Domain_Maximum: -20.10
Attribute_Units_of_Measure: unitless ratio

Attribute:

Attribute_Label: D14C
Attribute_Definition:

D14C (Delta 14C) is the relative difference between the absolute international standard (base year 1950) and sample activity, corrected for age and d13C (delta 13C).

Attribute_Definition_Source: NOSAMS (https://www2.whoi.edu/site/nosams/)
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -499.08
Range_Domain_Maximum: 196.18
Attribute_Units_of_Measure: unitless

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Lauren T. Toth
Contact_Organization: SOUTHEAST REGION: ST. PETE COASTAL & MARINE SC

Contact_Position: Research Physical Scientist
Contact_Address:

Address_Type: mailing and physical
Address: 600 4Th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: US

Contact_Voice_Telephone: 727-502-8029
Contact_Electronic_Mail_Address: ltoth@usgs.gov

Distribution_Liability:

Although these data have been processed successfully on a computer system at 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. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: comma-delimited text, Microsoft Excel format

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://coastal.er.usgs.gov/data-release/doi-P9OOL3L4/data/South_Florida_mangrove_peat_radiocarbon_data.zip

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20220819
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Lauren T. Toth
Contact_Organization: SOUTHEAST REGION: ST. PETE COASTAL & MARINE SC

Contact_Position: Research Physical Scientist
Contact_Address:

Address_Type: mailing and physical
Address: 600 4Th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: US

Contact_Voice_Telephone: 727-502-8029
Contact_Electronic_Mail_Address: ltoth@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/spcmsc/South_Florida_mangrove_peat_radiocarbon_metadata.html>