Geochronology in the South Florida Ecosystem and Associated Ecosystem Programs
Entry ID: USGS_SOFIA_metholms

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Summary
Abstract: In order to manage an ecosystem, it is imperative to define the rate at which ecologic, physical and chemical changes have occurred. The lack of historical records documenting ecological changes dictates that other methods are used to measure the rate of change. A common method of "dating" change is to measure the decay of naturally occurring radioactive nuclides.

The use of radioactive isotopes ... View entire text
Related URL
Description: Data may be downloaded from the SOFIA website
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Multimedia Sample
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Description:  Rabbit Key

 
Geographic Coverage
Spatial coordinates   
  N: 26.5   S: 24.75   E: -80.1   W: -81.75

Data Set Citation
Dataset Originator/Creator: Charles W. Holmes (retired) Debra Willard
Dataset Title: Geochronology in the South Florida Ecosystem and Associated Ecosystem Programs
Dataset Release Date: 2004
Data Presentation Form: spreadsheets, JPEG images
Online Resource: http://sofia.usgs.gov/projects/sed_geochron/
Temporal Coverage
Start Date: 1994-02-01
Stop Date: 1999-09-31
Quality Pb -210 analysis was done on samples from most sites. Some samples were analyzed for stable isotopes and/or other radioactive elements.

Pb-210 analysis was done on samples from Rabbit Key, Whipray Basin, Bob Allen Key, Rankin Bight, Lake Ingraham, Russell Bank N and S, Johnson Key, Trout Creek, Little Madiera Bay, Pass Key, Taylor, and Pass Key Bank. Analysis for stable isotopes was done on samples from Bob Allen Key Bank, Russell Bank South, Pass Key Bank, Bob Allen Key, and Pass Key
Access Constraints None
Use Constraints None
Data Set Progress
COMPLETE
Originating Center
Data Center
SOUTH FLORIDA INFORMATION ACCESS, SOUTHEAST ECOLOGICAL SCIENCE CENTER, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF THE INTERIOR Supplemental Info
Data Center URL: http://sofia.usgs.gov/

Data Center Personnel
Name: HEATHER S. HENKEL
Phone: 727-502-8028
Fax: 727-502-8182
Email: hhenkel at usgs.gov
Contact Address:
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
600 Fourth St. South
City: St. Petersburg
Province or State: FL
Postal Code: 33701
Country: USA
Distribution
Distribution Format: JPEG
Fees: None
Personnel
Role: TECHNICAL CONTACT
Phone: (703) 648-5320
Fax: (703) 648-6953
Email: dwillard at geochange.er.usgs.gov
Email: dwillard at mailrvag2.er.usgs.gov
Contact Address:
MS 926A National Center
U.S. Geological Survey
City: Reston
Province or State: VA
Postal Code: 20192
Country: USA
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Publications/References
Gough, L. P., Kotra, R. K.; Holmes, C. W.; Orem, W. H.; Hageman, P. L.; Briggs, P. H.; Meier, A. L.; Brown, Z. A., 2000, Regional Geochemistry of Metals in Organic-Rich Sediments, Sawgrass, and Surface Water from Taylor Slough, Florida, USGS Open-File Report, 00-327, Reston, VA, U.S. Geological Survey.
http://sofia.usgs.gov/publications/ofr/00-327/
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-03-12
Last DIF Revision Date: 2009-04-28
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