西太平洋深海沉积物孔隙水稀土元素地球化学特征及意义

车宏, 胡邦琦, 丁雪, 宋维宇, 郭建卫, 崔汝勇, 邓义楠. 西太平洋深海沉积物孔隙水稀土元素地球化学特征及意义[J]. 海洋地质与第四纪地质, 2021, 41(1): 75-86. doi: 10.16562/j.cnki.0256-1492.2020102601
引用本文: 车宏, 胡邦琦, 丁雪, 宋维宇, 郭建卫, 崔汝勇, 邓义楠. 西太平洋深海沉积物孔隙水稀土元素地球化学特征及意义[J]. 海洋地质与第四纪地质, 2021, 41(1): 75-86. doi: 10.16562/j.cnki.0256-1492.2020102601
CHE Hong, HU Bangqi, DING Xue, SONG Weiyu, GUO Jianwei, CUI Ruyong, DENG Yinan. Rare earth element geochemistry characteristics and implications of pore-water from deep sea sediment in Western Pacific Ocean[J]. Marine Geology & Quaternary Geology, 2021, 41(1): 75-86. doi: 10.16562/j.cnki.0256-1492.2020102601
Citation: CHE Hong, HU Bangqi, DING Xue, SONG Weiyu, GUO Jianwei, CUI Ruyong, DENG Yinan. Rare earth element geochemistry characteristics and implications of pore-water from deep sea sediment in Western Pacific Ocean[J]. Marine Geology & Quaternary Geology, 2021, 41(1): 75-86. doi: 10.16562/j.cnki.0256-1492.2020102601

西太平洋深海沉积物孔隙水稀土元素地球化学特征及意义

  • 基金项目: 国家自然科学基金面上项目“菲律宾海盆底层水体性质对中更新世气候转型的响应机制”(41976192),“西太平洋深海盆地孔隙水稀土元素特征及其对沉积物稀土富集机制初探”(41803026);自然资源部海洋生态环境科学与工程重点实验室开放课题“盐度锋面对长江口海域稀土元素物质循环过程的影响”(MESE-2019-04);中国地质调查局项目(DD20191010)
详细信息
    作者简介: 车宏(1988—),女,博士,助理研究员,主要从事痕量元素与同位素地球化学研究,E-mail:hche@qnlm.ac
    通讯作者: 胡邦琦(1983—),男,博士,研究员,主要从事海洋沉积与矿产资源调查评价工作,E-mail:bangqihu@gmail.com
  • 中图分类号: P736.4

Rare earth element geochemistry characteristics and implications of pore-water from deep sea sediment in Western Pacific Ocean

More Information
  • 为探索深海孔隙水中稀土元素的生物地球化学循环过程,对太平洋菲律宾海九州-帕劳海脊东、西两侧的两个钻孔沉积物进行了高精度的孔隙水采样工作,分析了主、微量元素和稀土元素的地球化学特征,并对稀土元素的浓度、配分模式以及分馏特征进行了详细的讨论。结果表明:这两个钻孔沉积物均处于氧化环境,表现出海水-沉积物界面和浅层孔隙水(2.5~20 cm)中相对富集轻稀土和中稀土,而中层(25~60 cm)和深层沉积物(>65 cm)孔隙水中则相对富集重稀土元素的特征。初步推断有机质和锰(氢)氧化物的分解和吸附作用是造成孔隙水中稀土元素分馏的主要因素。相比于九州-帕劳海脊的东、西两侧海域,孔隙水中的稀土元素浓度和分馏程度存在一定的差异,周围环境中的矿物组成和锰(氢)氧化物等是其主要的控制因素,但是研究区域深海孔隙流体并不能为海洋贡献稀土元素。

  • 加载中
  • 图 1  菲律宾海研究区域采样站位图

    Figure 1. 

    图 2  孔隙水中部分主量元素、微量元素和稀土元素随深度的变化

    Figure 2. 

    图 3  孔隙水中稀土元素的标准化配分曲线

    Figure 3. 

    图 4  海水和孔隙水中稀土元素的分异特征

    Figure 4. 

    图 5  孔隙水中Mn与金属元素的相关关系

    Figure 5. 

    图 6  菲律宾海底层海水和孔隙水中稀土元素分布趋势

    Figure 6. 

    图 7  不同海域沉积物孔隙水中轻中重稀土的含量变化[25,29,34,45]

    Figure 7. 

    表 1  孔隙水中主量元素和微量元素的分析结果

    Table 1.  Concentrations of major and trace elements in the pore-water

    站位深度/cmCa/(mg/L)K/(mg/L)Mn/(ng/L)Co/(ng/L)Cu/(ng/L)Zn/(ng/L)Sr/(μg/L)Mo/(μg/L)
    XTZZ402.52593677965.51082 5746 5619.17
    7.52593634282.3501 7136 6636.78
    102593924143.1522 1376 59310.4
    252583943463.4651 4496 4329.34
    42.52594253906.51352 9846 38611.1
    452594334455.12533 9556 46511.4
    552554314454.0609586 40912.9
    602654414214.5739476 92912.4
    652614506646.31112 7586 64812.3
    752674333973.7521 6346 15411.8
    952634053765.7599276 37913.6
    1003054572332.91061 1166 51016.2
    XTZZ642.53114031842.6701 0986 85814.7
    7.53154213894.8411 3116 8459.02
    103234472 45128.43721 9836 9768.25
    152674115866.61262 1646 2384.17
    17.52854397714.71021 7486 5609.07
    202884466496.11132 9656 5849.71
    22.53024544934.51852 5736 6679.81
    253054436014.0901 8066 5648.20
    27.53194534805.61091 4776 7389.65
    302824081 21910.31421 7316 3079.38
    32.53014343303.41071 4066 0748.19
    353134522155.6721 5366 75410.1
    403034443794.0791 0676 6057.03
    453004463133.2571 0256 5888.48
    47.530144174912.11011 2156 6609.48
    503004345218.8681 1786 5707.18
    602904452903.3631 6096 6049.59
    653134651912.8481 0446 5637.82
    703034496005.41242 0626 4818.60
    753034504804.21145 6756 4768.85
    803144614364.7641 8736 3509.04
    903035148207.81601 9536 42515.7
    953304884513.91741 6716 80814.7
    1003264839366.3961 5906 49113.0
    下载: 导出CSV

    表 2  孔隙水中稀土元素的分析结果

    Table 2.  Concentration of REEs in the pore-water

    pmol/kg
    站位深度/cmLaCePrNdSmEuGdTbDyHoErTmYbLu
    XTZZ402.546.3927.471.857.481.280.131.140.010.610.041.540.170.63
    7.521.1132.861.857.691.540.241.550.140.860.072.130.180.790.04
    1012.2320.501.135.000.930.050.840.040.400.011.470.150.220.05
    2569.2696.418.1531.975.571.265.531.025.271.106.960.713.100.50
    42.549.7626.837.0430.596.061.276.931.005.421.154.660.743.820.48
    4567.6494.416.9527.255.240.995.490.533.750.896.710.482.970.43
    55116.2890.079.1639.217.991.038.331.126.901.126.380.864.420.53
    6047.0253.735.3522.914.120.845.920.724.411.014.930.493.330.47
    6511.2429.781.827.551.840.181.380.051.110.052.310.201.070.05
    7533.6650.477.2735.836.161.667.311.036.080.984.400.653.160.53
    9529.4336.144.6020.314.591.013.830.513.760.572.310.451.870.22
    10020.6325.493.3615.523.000.643.010.523.190.602.160.492.450.32
    XTZZ642.544.8738.316.1024.793.961.228.050.975.621.395.440.713.540.55
    7.550.6024.613.9219.453.760.724.290.474.990.823.610.492.660.37
    1045.5027.824.8221.613.330.514.760.694.381.033.430.532.530.32
    1540.6029.184.5421.502.920.494.370.523.370.662.740.482.140.26
    17.548.2647.084.5420.053.580.484.530.534.800.804.140.462.360.34
    2039.6049.564.6020.623.722.174.530.653.860.824.370.542.290.46
    22.537.3247.224.3121.544.250.685.030.543.960.904.850.383.010.46
    2536.5135.314.1118.314.740.574.890.563.611.003.530.392.230.32
    27.535.8236.063.7017.562.940.153.740.573.200.433.480.472.360.23
    3042.0452.904.2620.663.320.443.880.593.030.724.920.372.470.25
    32.534.9031.234.3417.104.030.614.110.533.330.832.800.522.070.33
    3542.4548.024.0919.713.540.744.560.573.640.724.310.532.540.29
    4042.1336.636.2129.646.451.397.820.966.171.285.140.753.570.72
    4540.9241.994.0018.253.510.644.370.463.450.774.300.482.550.26
    47.534.9043.084.3821.823.600.544.510.533.370.963.170.521.990.26
    5040.0342.994.8820.794.800.805.970.964.311.074.750.713.640.69
    6034.3036.404.1620.403.100.513.680.563.400.813.570.392.770.34
    6528.4737.173.6214.792.440.614.360.483.650.863.810.402.250.33
    7030.8737.434.1118.452.280.533.890.484.070.923.650.482.460.35
    7533.5540.684.4119.663.250.634.380.564.150.714.210.452.650.36
    8036.0551.444.8620.512.910.704.720.584.300.934.050.613.310.34
    9035.9134.894.7020.103.270.814.210.473.560.742.950.472.800.33
    9533.3542.423.6717.193.630.563.380.452.980.593.740.392.090.27
    10030.6149.244.1719.182.780.485.270.282.970.784.150.422.650.31
    下载: 导出CSV
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出版历程
收稿日期:  2020-10-26
修回日期:  2020-12-14
刊出日期:  2021-02-28

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