乌兰布和沙漠沉积物粒度和地球化学元素特征及其环境意义

王军广, 董治宝, 刘荣亮, 史际桥

Characterization of the grain size and geochemical elements of Ulan Buh Desert sediments and their environmental significance

Junguang Wang, Zhibao Dong, Rongliang Liu, Jiqiao Shi

表3 乌兰布和沙漠沉积物微量元素含量

Table 3 Contents of trace elements in sediments of the Ulan Buh Desert

元素 部位 类型 上部陆壳[49] 陆源页岩[49] 中国黄土[50-51] 库姆塔格沙漠[1] 格状沙丘 新月形沙丘 灌丛沙丘 丘间地 Cr 表层 41.21±11.2 56.95±17.65 55.08±21.56 52.06±27.56 35 110 54.02 48 下层 62.39±24.38 60.75±20.48 56.30±17.33 61.39±23.10 Co 表层 63.88±10.89 61.35±15.91 49.73±18.65 61.13±18.99 10 23 14.31 7.78 下层 55.12±18.52 59.33±4.87 55.52±19.59 57.27±15.80 Ni 表层 11.14±2.05 11.53±1.56 11.89±1.45 11.16±2.31 20 55 32.1 18.98 下层 11.76±1.87 11.94±2.65 12.99±1.63 11.57±1.58 Cu 表层 7.48±0.86 7.08±1.53 7.18±1.26 7.18±1.97 25 50 24.01 12.89 下层 8.11±1.14 7.88±1.17 7.64±1.10 7.30±1.23 Zn 表层 18.60±2.39 18.36±3.06 20.02±3.27 17.36±3.74 71 85 60.02 39.92 下层 19.33±2.84 19.88±2.92 21.69±3.51 18.12±2.29 Rb 表层 66.88±3.14 65.58±3.49 67.03±4.34 64.29±4.63 112 160 96.02 68.29 下层 67.11±3.46 66.83±3.41 68.25±4.97 65.99±3.45 Sr 表层 165.18±12.73 161.50±11.97 163.60±11.80 163.24±20.64 350 200 187.05 249.16 下层 158.26±12.76 159.98±8.92 164.34±10.40 166.69±18.20 Zr 表层 101.77±15.80 112.45±19.81 108.51±9.81 121.64±31.15 190 210 212.03 161.04 下层 111.71±10.31 116.68±26.63 124.14±14.89 126.29±31.81 Ba 表层 542.84±62.23 558.45±50.01 566.14±52.92 544.68±54.75 550 650 489.02 556.51 下层 537.83±51.01 554.20±55.48 561.66±53.55 543.36±72.01 Th 表层 3.94±0.58 3.87±0.75 4.30±0.61 3.86±0.90 10.7 14.6 21.6 6.48 下层 4.39±0.77 3.92±0.69 4.46±0.98 3.97±0.65