radiolarian

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

过去未将类地层列入勘探，究认为类地层将会成为一个潜在油气勘探。

2.10.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缘浅水碳酸盐岩及断陷盆地内较深水放射虫硅质岩。