Dataset 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.
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
Process_Step:
Process_Description:
Six sediment cores were collected from Everglades National Park (ENP) in July 2009 and May 2013, using a Russian Peat Corer. Sediment collected in the Russian Peat Corer was transferred to half-sectioned 50-centimeter (cm) PVC tubes. These tubes were sealed in plastic and labeled according to site location name. Four of the cores were taken from areas that have no record of fire (SH2M2 WSC2B, Tarpon 1, MPR West 1, OIH SE) and two cores were taken from areas with well-documented fire history (SH5 WSC8B, MPR West 2). Cores MPR West 1, OIH SE and MPR West 2 contained a mixture of peat and marl sediment whereas cores SH2M2 WSC2B, SH5 WSC8B and Tarpon 1 were highly organic peat with no marl. These cores were transferred to the St. Petersburg Coastal and Marine Science Center and were refrigerated for preservation prior to laboratory processing.
Process_Date: 2013
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ginger Tiling-Range
Contact_Position: Geologist/GIS Specialist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8081
Contact_Electronic_Mail_Address: gtrange@usgs.gov
Process_Step:
Process_Description:
Two cubic centimeters (cc) of sediment was subsampled down all six cores every two cm. Each subsample was placed into a 400 ml beaker and placed under a fume hood for the next processing step for charcoal analysis.
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ginger Tiling-Range
Contact_Position: Geologist/GIS Specialist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8081
Contact_Electronic_Mail_Address: gtrange@usgs.gov
Process_Step:
Process_Description:
To remove organic material that obscured visualization of charcoal from the peat samples (SH2M2 WSC2B, SH5 WSC8B and Tarpon 1), 200 ml of 20% Hydrogen peroxide (H202) was poured into beakers containing the peat subsamples and placed on a hot late at 50C (degrees Celsius). These samples were left in the solution, under a fume hood, until the organics were no longer visible and charcoal was easily visualized.
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ginger Tiling-Range
Contact_Position: Geologist/GIS Specialist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8081
Contact_Electronic_Mail_Address: gtrange@usgs.gov
Process_Step:
Process_Description:
To remove calcite marl that obscured visualization of charcoal from samples containing marl and peat (MPR West 1, OIH SE and MPR West 2), 200 ml of 1 Normal Hydrochloric acid (1N HCl) was poured into beakers containing the marl/peat subsamples and placed on a hot plate at 50C. These samples were left in the solution, under a fume hood, until the marl was no longer visible.
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ginger Tiling-Range
Contact_Position: Geologist/GIS Specialist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8081
Contact_Electronic_Mail_Address: gtrange@usgs.gov
Process_Step:
Process_Description:
Following the 1N HCl treatment to remove the marl, the marl/peat subsamples(MPR West 1, OIH SE and MPR West 2) were placed in 200 ml of 20% H202 on a hot plate at 50C to remove the remaining organic material. These samples were left in the solution, under a fume hood, until the organics were no longer visible and that charcoal was easily visualized.
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ginger Tiling-Range
Contact_Position: Geologist/GIS Specialist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8081
Contact_Electronic_Mail_Address: gtrange@usgs.gov
Process_Step:
Process_Description:
After all six samples were treated with H2O2 or HCl, they were sieved through 250, 125, and 63 micron(µm) sediment sieves. The resulting sieved material was then placed in petri dishes, labeled according to core identification (ID), depth and sieve size, then placed under a fume hood to dry for two to three days.
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ginger Tiling-Range
Contact_Position: Geologist/GIS Specialist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8081
Contact_Electronic_Mail_Address: gtrange@usgs.gov
Process_Step:
Process_Description:
Once all the organic and marl material had been removed from the samples, a paper-counting grid was created for counting charcoal particles and was subsequently placed under a petri dish containing the subsampled sediments. The number of charcoal particles in each grid cell were visualized and counted using a stereomicroscope. Charcoal was classified in each sample into three size classes: small (63 µµm), medium (125 µm) and large (250 µm). These classes were based on the sediment sieve size. The count for each size class was then entered into a Microsoft Excel 2010 workbook.
Process_Date: 2014
Source_Produced_Citation_Abbreviation: SH2M2 WSC2B.xlsx
Source_Produced_Citation_Abbreviation: SH5 WSC8B.xlsx
Source_Produced_Citation_Abbreviation: Tarpon 1.xlsx
Source_Produced_Citation_Abbreviation: MPR West 1.xlsx
Source_Produced_Citation_Abbreviation: OIH SE.xlsx
Source_Produced_Citation_Abbreviation: MPR West 2.xlsx
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Ginger Tiling-Range
Contact_Position: Geologist/GIS Specialist
Contact_Address:
Address_Type: Mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 502-8080
Contact_Electronic_Mail_Address: gtrange@usgs.gov
Process_Step:
Process_Description:
Prior to charcoal analysis processing, sediment from SH2M2 WSC2B, Tarpon 1 and SH5 WSC8B cores were collected every 2 cm for age-dating. Gama activities measurements were made using an intrinsic germanium detector coupled to a multi-channel analyzer. Freeze dried and ground sediments were packed and sealed in gamma tubes for 21 days. Activity for 210Pb was measured using the 46.5 Kiloectronvolt (keV) peak and Radium-226 (226Ra) by using Lead-214 (214Pb) (351.9 keV peak) as its proxy. Dates have been calculated following the Constant Rate of Supply (CRS) model. The results from this age-dating were used to date the 2 cm sample intervals in the peat cores.
Process_Date: 2014
Source_Produced_Citation_Abbreviation: Pb-210 Dates_WSC 2B 8B.xlsx
Source_Produced_Citation_Abbreviation: SH5_WSC8b_Pb_210.xlsx
Source_Produced_Citation_Abbreviation: TAR-1 CRS-B well 1.xlsx
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of South Florida
Contact_Person: Joseph M. (Donny) Smoak
Contact_Position: Professor
Contact_Address:
Address_Type: Mailing and physical
Address: 140 7th Avenue South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: (727) 873-4078
Contact_Electronic_Mail_Address: smoak@mail.usf.edu
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20201013
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov