The radiolarite and the biological remains in the silicalite of changkeng gold - silver deposit , guangdong 广东长坑金银矿床硅质岩中的放射虫化石及生物化石残迹
The two early carboniferous fragments are composed of basalt and ash - black , fuchsia radiolaria silicalite , siliceous mudstone , tuff 早石炭世两个断片由玄武岩和灰白色、紫红色放射虫硅质岩、硅质泥岩、凝灰岩组成。
The relationship between the microorganisms and environmental control factors , for example , water depth , temperature and salinity are analyzed and discussed 其中,矽藻在样品中的丰度均占绝纣优势,高出放射虫和海绵骨针一个数量级。
The study of foraminifera , ostrocoda , radiolaria and calcareous nannofossil plays an important , indispensable and useful role in the marine geology research 其中有孔虫、介形虫、放射虫、超微化石等海洋微体生物壳体是海洋地质研究不可缺少和替代的重要部分。