Source identification of aluminum in surface sediments of the Yellow Sea off the Shandong Peninsula
- PDF / 1,128,641 Bytes
- 7 Pages / 595 x 842 pts (A4) Page_size
- 31 Downloads / 183 Views
Source identification of aluminum in surface sediments of the Yellow Sea off the Shandong Peninsula XU Gang1, 2, 3, 4, LIU Jian1, 2, 3, 4, PEI Shaofeng1, 2, 3, 4*, KONG Xianghuai1, 4, HU Gang1, 4, GAO Maosheng1, 4 1 Qingdao Institute of Marine Geology, Ministry of Land and Natural, Qingdao 266071, China 2 Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061,
China 3 Key Laboratory of Ministry of Land and Natural Resources for Marine Hydrocarbon Resources and Environment
Geology, Qingdao 266071, China 4 Key Laboratory of China Geological Survey Bureau for Coastal Wetland Biogeosciences, Qingdao 266071, China
Received 30 October 2014; accepted 2 March 2015 ©The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg 2015
Abstract
Surface sediment samples in the near shore area of the north Shandong Peninsula are collected for grain size and element analyses. The results indicate that the surface sediments in the study area are primarily composed of the silt-sized components similar to the Huanghe River. The total concentration of aluminum varies from 5.57% to 7.37% (average (6.33 ± 0.40)%), and its spatial distribution is mainly controlled by the grain size. Correlations between the ratio of aluminum to titanium concentration and aluminum concentration, titanium concentration and the mean grain size indicate that aluminum in the near shore surface sediments is affected majorly by the terrigenous source, and partially by the anthropogenic source. The ratios of aluminum to titanium concentrations are larger than the background value of loess matter at some stations due to the existence of excess aluminum associated with human activities. Thus, the sources of aluminum should be identified firstly when aluminum is used as an index of terrigenous matter even in the near shore area dominated by terrigenous deposits. Key words: aluminum, source identification, surface sediments, Shandong Peninsula, Yellow Sea Citation: Xu Gang, Liu Jian, Pei Shaofeng, Kong Xianghuai, Hu Gang, Gao Maosheng. 2015. Source identification of aluminum in surface sediments of the Yellow Sea off the Shandong Peninsula. Acta Oceanologica Sinica, 34(12): 147–153, doi: 10.1007/s13131-015-0766-9
1 Introduction Aluminum and titanium are the main components of continental rock, soil and weathering products, but their concentrations are very low in sea water (Taylor and McLennan, 1985). Generally, they are extremely resistant to weathering and well conserved in sediments (Wayne Nesbitt and Markovics, 1997; Wei et al., 2003b), and extensively applied to estimating the contribution of terrigenous matter to marine sediments (Walsh et al., 1988; Saito et al., 1992; Klump et al., 2000). Besides, when transportation process is considered, the ratio of titanium to aluminum concentration is helpful to trace density differences in siliciclastic matter derived from fluvial and aeolian sources (Chen et al., 2013). Aluminum and titanium concentrations are also frequently used to normalize the
Data Loading...
