地质学
地中海
沉积物
地球化学
横断面
磷石膏
碳酸盐
陆源沉积物
地中海气候
海洋学
沉积岩
地貌学
有机化学
化学
冶金
材料科学
生物
原材料
生态学
作者
Giorgio Tranchida,Elvira Oliveri,Massimo Angelone,Adriana Bellanca,P. Censi,Marta D’Elia,Rodolfo Neri,Francesco Placenti,Mario Sprovieri,Salvatore Mazzola
标识
DOI:10.1016/j.marpolbul.2010.11.003
摘要
Concentrations of rare earth elements (REE), Y, Th and Sc were recently determined in marine sediments collected using a box corer along two onshore–offshore transects located in the Strait of Sicily (Mediterranean Sea). The REE + Y were enriched in offshore fine-grained sediments where clay minerals are abundant, whereas the REE + Y contents were lower in onshore coarse-grained sediments with high carbonate fractions. Considering this distribution trend, the onshore sediments in front of the southwestern Sicilian coast represent an anomaly with high REE + Y concentrations (mean value 163.4 μg g−1) associated to high Th concentrations (mean value 7.9 μg g−1). Plot of shale-normalized REE + Y data of these coastal sediments showed Middle REE enrichments relative to Light REE and Heavy REE, manifested by a convexity around Sm–Gd–Eu elements. These anomalies in the fractionation patterns of the coastal sediments were attributed to phosphogypsum-contaminated effluents from an industrial plant, located in the southern Sicilian coast.
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