Reconstructing seawater column 90Sr based upon 210Pb/226Ra disequilibrium dating of mollusk shells |
| |
| Institution: | 1. Department of Geology, Wayne State University, 0224 Old Main Building, Detroit, MI 48202, USA;2. Korea Ocean Research and Development Institute, Ansan, P.O. Box 29, Seoul 425-600, Korea;3. Department of Marine Biology, Texas A&M University at Galveston, 5007 Avenue U, Galveston, TX 77551, USA;1. Centre for Coastal and Catchment Research, River Basin Dynamics and Hydrology Research Group, Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, Ceredigion, SY23 3DB, UK;2. School of Environment, Natural Resources and Geography, Bangor University, Bangor, Gwynedd, LL55 1YW, UK;3. Innovative River Solutions, Institute of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North, 4442, New Zealand;1. Environmental Research Institute of the Supervising Scientist (ERISS), GPO Box 461, Darwin, NT 0801, Australia;2. Federal Office for Radiation Protection (Bundesamt für Strahlenschutz, BfS), 79098, Freiburg, Germany;1. Sai Nath University, Ranchi, India;2. Kongunadu Arts and Science College (Bharathiar University), Coimbatore, India;1. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2. College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241003, China;1. Nuclear Physics Laboratory, Faculty of Science, University of Yaounde I, Cameroon;2. National Radiation Protection Agency, P.O. Box 33732 Yaounde, Cameroon;3. Institute of Geological and Mining Research, P.O. Box 4110 Yaoundé, Cameroon;4. University of Maroua, Cameroon;1. CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China;2. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi''an 710075, Shaanxi, China;3. State Key Laboratory in Marine Pollution, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong, China |
| |
| Abstract: | The shells of marine and fresh water mollusks can serve as effective archives in retrieving information on natural and anthropogenic environmental changes. The advantage of using bivalves is that they integrate water chemistry changes into their shells during their life span. Retrospective study of environmental changes and pollutants using bivalve shells requires precise determination of the time of incorporation into the abiotic environmental matrix (here after age) of the specimen. For the first time, a set of archived bivalve samples (for which date of the death/collection is known) has been analyzed to establish the ages of mollusk shells using the 210Pb–226Ra disequilibrium method. In addition, Sr and 90Sr were analysed. The ages obtained using the 210Pb/226Ra disequilibrium dating method agrees well with the calendar years calculated from the date of death/collection. The ages obtained can be utilized to reconstruct the 90Sr levels in the water column at sites where the mollusk shells were collected. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
