Biogenic silica ( bsi ) is produced in the euphotic zone of the ocean by siliceous plankton such as diatoms or radiolarians 生物硅( bsi )的积累反映了生产力的长期和空间变化，它同时和全球c循环有着密不可分的关系。
2.
The geochemistry characteristic of fuchsia radiolarian silicalite indicates that they deposited in the of edge of oceanic basin near the continental margin , not the typical caontinental margin environment 从硅质岩的地球化学特征表现来看，紫红色放射虫硅质岩部分不是形成于典型的大陆边缘环境中，而是形成于近大陆边缘的洋盆边缘环境。
3.
The pteridophyta fauna includes 3 genara and 6 species ( including 5 unnamed species ) , the graptolite fauna includes 3 genara and 4 species , the conodont fauna includes 10 genara and 17 species and the radiolarian fauna includes 12 genara and 28 species 鉴定后发现，植物共计3属6种(其中包括5个未定种) ，笔石计有3属4种，牙形石计有10属17种，放射虫计有12属28种。
4.
According to the fossils , we found one graptolite zone : mongraptus yukonensis - neomongraptus himalayensis zone ; two radiolarian combinations : entactinia - entactinosphaera , entqctinia itsukaichiensis combination , and three radiolarian zones : albaillella paradoxa zone , albaillella indensis zone and albaillella cartalla zone . 2 . the new cognition about the sedimentary environment of the original nanpihe formation 放射虫可建立两个组合和三个化石带：晚泥盆世entactinia - entactinosphaera组合；早石炭世杜内期中期albaillellaparadoxa带，杜内期晚期?维宪期早期albaillellaindensis带，维宪期中期albaillellacartalla带；晚二叠世entactiniaitsukaichiensis组合。
5.
The coqen basin in xizang lies between the bangong - nujiang suture zone and yarlung zangbo suture zone , and once extended northwards and southwards , respectively centred by the qiekan - goicang - asog rift zone as the center of deposition and subsidence during the middle jurassic to the early creatceous . ( 1 ) during the middle - late jurassic , the rift zone was occupied by deep - water turbidites , radiolarian siliceous rocks , shallow - water carbonate rocks , clastic rocks and basic - ultrabasic rocks , while both sides of it by littoral and shallow marine elastic rocks and carbonate rocks 摘要位于班公湖怒江缝合带与雅鲁藏布江缝合带之间的措勤盆地，在中侏罗世早白垩世期间具有以且坎古昌阿索裂谷带为沉积、沉降中心向南北两侧展开的古地理格局：中晚侏罗世时期，裂谷带内由深水浊积岩、放射虫硅质岩和浅水碳酸盐岩、碎屑岩岩片及基性超基性岩等组成；裂谷带两侧由滨浅海相碎屑岩和碳酸盐岩组成。
6.
Based on the quantitative studies of siliceous microorganisms and terrestrial detritus in 12 surface sediment samples , which were recovered by the first chinese national arctic expedition team , in the bering sea , it goes without saying that diatom abundance is dominant within the microorganisms which consists of diatoms , radiolarians and sponge spicules 摘要中国首次北极科学考察在白令海?取了12个表层沉积物样品，其中对矽质生物和陆源碎屑的详细研究发现，它们主要由矽藻、放射虫和海绵骨针组成。
