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Transport and exchange of U-series nuclides between suspended material, dissolved load and colloids in rivers draining basaltic terrains

Abstract:

This study presents uranium and thorium concentrations and activity ratios for all riverine phases (bedload, suspended load, dissolved load and colloids) from basaltic terrains in Iceland and the Azores. Small basaltic islands, such as these, are thought to account for ~25% of CO2 consumed by global silicate weathering, and for ~45% of the flux of suspended material to the oceans. These data indicate that [U] and [Th] in the dissolved and colloidal fractions are strongly controlled by pH, and...

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Publisher copy:
10.1016/j.epsl.2010.10.029

Authors


Pogge von Strandmann, PAE More by this author
Burton, KW More by this author
Porcelli, D More by this author
van Calsteren, P More by this author
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Journal:
Earth and Planetary Science Letters
Volume:
301
Issue:
1-2
Pages:
125-136
Publication date:
2011-01-03
DOI:
ISSN:
0012-821X
URN:
uuid:c6440ebb-8dc1-454b-8b2a-4722a7dbbec4
Source identifiers:
110363
Local pid:
pubs:110363
Language:
English
Keywords:

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