NDLI: Anthropogenic and Authigenic Uranium in Marine Sediments of the Central Gulf of California Adjacent to the Santa Rosalía Mining Region

Content Provider	Springer Nature Link
Author	Shumilin, Evgueni Rodríguez Figueroa, Griselda Sapozhnikov, Dmitry Sapozhnikov, Yuri Choumiline, Konstantin
Copyright Year	2012
Abstract	To investigate the causes of uranium (U) enrichment in marine sediments in the eastern sector of the Gulf of California, surface sediments and sediment cores were collected adjacent to the Santa Rosalía copper mining region in the Baja California peninsula. Three coastal sediment cores were found to display high concentrations of U (from 54.2 ± 7.3 mg kg−1 to 110 ± 13 mg kg−1) exceeding those found in the deeper cores (1.36 ± 0.26 mg kg−1 in the Guaymas Basin to 9.31 ± 3.03 mg kg−1 in the SR63 core from the suboxic zone). The contribution of non-lithogenic U (estimated using scandium to normalize) to the total U content in sediments of three coastal cores varied from 97.2 ± 0.4 % to 98.82 % versus 49.8 ± 3 % (Guaymas Basin) to 84.2 ± 8.2 % (SR62 core) in the deeper cores. The U content record in a lead-210 (210Pb)-dated core had two peaks (in 1923 and 1967) corresponding to the history of ancient mining and smelting activities in Santa Rosalía.
Starting Page	309
Ending Page	322
Page Count	14
File Format	PDF
ISSN	00904341
Journal	Archives of Environmental Contamination and Toxicology
Volume Number	63
Issue Number	3
e-ISSN	14320703
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-06-22
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Soil Science & Conservation Environmental Chemistry Pollution Environmental Monitoring/Analysis Environmental Health Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Medicine Toxicology

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