罗圈组为一穿时地层单位，时代为震旦纪—早寒武世。

Luoquan Formation is a diachronous unit from Sinian to Lower Cambrian.

youdao

罗圈组为一穿时地层单位，时代为震旦纪—早寒武世。

Luoquan Formation is a diachronous unit from Sinian to Lower Cambrian.

youdao