Florida Bay Radiochemical dataEntry ID: USGS_SOFIA_hlms_radchem_data
Abstract: The datasets contains the core number, depth (cm), and Ra-226 activity(dpm/g) and Ra-226 error (dpm/g).
The use of radioactive isotopes is founded on the known physical property of radioactive material, the half-life. A half-life of an isotope is the amount of time it takes for half of a given number of atoms to "decay" to another element. The age of objects that contain radioactive ... isotopes with known half-lives can be calculated by determining the percent of the remaining radioactive material. To use this method successfully certain other prerequisites must be met. These are: 1. the chemistry of the nuclide (element) is known; 2. once the nuclide is incorporated into the substrate the only change is radioactive decay, and 3. in order to be useful, it is relatively easy to measure.
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Data Set Citation
Dataset Originator/Creator: Charles W. Holmes (retired) Debra Willard
Dataset Title: Florida Bay Radiochemical data
Dataset Release Date: 1999
Data Presentation Form: spreadsheetsOnline Resource: http://sofia.usgs.gov/exchange/holmes/holmesradiochem.html
Start Date: 1994-02-07Stop Date: 1997-06-13
Access Constraints None
Use Constraints These data are subject to change and are not citable until reviewed and approved for official publication by the USGS.
Data Set Progress
Distribution Format: MS Excel
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
MS 926A National Center U.S. Geological Survey
Province or State: VA
Postal Code: 20192
Role: DIF AUTHOR
Email: alicia.m.aleman at nasa.gov
Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
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.
Creation and Review Dates
DIF Creation Date: 2007-10-31
Last DIF Revision Date: 2009-06-02