radiolarian

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

过去未将地层列入勘探目标，研究认为地层将会成为一个潜在油气勘探目标。

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

奥地利阿尔卑斯—南阿尔卑斯仰冲叠覆体中基底和未受变质南大陆边水碳酸盐岩及断陷盆地内较深水放射硅质岩。