HAN Wen-zhong, OUYANG Zheng-jian, YUE Yan, et al. Geochemical Characteristics and Sedimentary Environments of Siliceous Rocks and Siliceous Mudstone——Case Study of Bayingou Ophiolitic Mélange in Xianjiang[J]. Northwestern Geology, 2009, 42(2): 55-63.
Citation:
HAN Wen-zhong, OUYANG Zheng-jian, YUE Yan, et al. Geochemical Characteristics and Sedimentary Environments of Siliceous Rocks and Siliceous Mudstone——Case Study of Bayingou Ophiolitic Mélange in Xianjiang[J]. Northwestern Geology, 2009, 42(2): 55-63.
HAN Wen-zhong, OUYANG Zheng-jian, YUE Yan, et al. Geochemical Characteristics and Sedimentary Environments of Siliceous Rocks and Siliceous Mudstone——Case Study of Bayingou Ophiolitic Mélange in Xianjiang[J]. Northwestern Geology, 2009, 42(2): 55-63.
Citation:
HAN Wen-zhong, OUYANG Zheng-jian, YUE Yan, et al. Geochemical Characteristics and Sedimentary Environments of Siliceous Rocks and Siliceous Mudstone——Case Study of Bayingou Ophiolitic Mélange in Xianjiang[J]. Northwestern Geology, 2009, 42(2): 55-63.
Geochemical Characteristics and Sedimentary Environments of Siliceous Rocks and Siliceous Mudstone——Case Study of Bayingou Ophiolitic Mélange in Xianjiang
The flaggy cherts and argillite in the ophiolitic mélange of Bayingou have a SiO2 content of 55.37%-91.19%,a high Al2O3 content between 3.07%-17.66%,and a TiO2 content of 0.12%-0.8%,having a good positive correlation between Al2O3 and TiO2,suggesting that they have a relatively high percentage of terrigenous muddy sediments Moreover,they have typical NASC-normalized flat REE patterns without any visible Cenegative anomaly;and the Eu has an obvious right-hand dipping pattern.
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