③矿物学方面，海绿石、菱铁矿结核、硼元素含量和碳氧同位素资料也表明沉积环境由海→陆的过渡性质。

In terms of mineralogy, glauconites, siderite nodules, boron contents and carbon isotopes also show that the sedimentary environment is transitional.

youdao

③矿物学方面，海绿石、菱铁矿结核、硼元素含量和碳氧同位素资料也表明沉积环境由海→陆的过渡性质。

In terms of mineralogy, glauconites, siderite nodules, boron contents and carbon isotopes also show that the sedimentary environment is transitional.

youdao