radiolarian chert
常見(jiàn)例句
- There exists abundant Radiolaria in the chert, and the radiolarian association suggests that the chert was formed in the last period of Late Jurassic.
矽質(zhì)巖中含有大量放射蟲(chóng)，放射蟲(chóng)組郃顯示矽質(zhì)巖的沉積時(shí)代爲(wèi)晚侏羅世晚期。 返回 radiolarian chert