Diabase dikes exposed on the northwestern margin of the Tarim basin contain 44.34%-49.3% SiO2 have higher values of Na2O+ K2O ( 4.32%-6.04%) and Na2O/ K2O ( 2.23-9.15), showing the features of intraplate basalt.

  • 塔里木盆地西北缘出露的辉绿岩墙的SiO2含量为44.34%~49.34%,Na2O+K2O(4.32%~6.04%)和Na2O/K2O均较高(2.23~9.15),主量元素反映板内玄武岩的特点。

  • 互联网摘选 2025-02-20 10:46:12

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