radiolarian

10.basement and unmetamorphosed terrigenous shallow carbonate rock in the Austria Alps -South Alps obduc-tion nappe and radiolarian silicalite in fault basins.

奥地利阿卑斯—南阿卑斯仰冲叠覆体中基底和受变质南大陆边缘浅水碳酸盐岩及断陷盆地内较深水放虫硅质岩。

Study shows that the T3-J1 radiolarian cherty strata will be made such a potential target in the not too distant future.

过去类地层列入勘探标，研究认为类地层会成为一个潜在油气勘探标。