nannofossil 中文意思是什麼
nannofossil
解釋
超微化石-
This study is a post - cruise study of this leg, calcareous nannofossil samples from sites 1146, 1147 and 1148 of leg 184 were analyzed to provide a high - resolution biostratigraphy for this leg and to investigate morphological variation of coccolith genus gephyrocapsa. the main results of this study are : 1. 12 late pliocene to pleistocene bio - events were recognized and 6 zones of martini ( 1971 ) were determined for the upper sediment sequences of sites 1146 and 1148
本文作為大洋鉆探項目船下后續研究的一部分，對184航次中的1146站位和1147 、 1148站位的樣品進行了分析和研究，在船上科學家已經建立起的地層框架的基礎上進一步加密采樣，對生物事件標志化石類別進行數量統計，進一步確定了12個生物事件在鉆孔中的深度，建立起了兩個站位的高解析度的鈣質超微化石生物地層框架。 -
The study of foraminifera, ostrocoda, radiolaria and calcareous nannofossil plays an important ， indispensable and useful role in the marine geology research
其中有孔蟲、介形蟲、放射蟲、超微化石等海洋微體生物殼體是海洋地質研究不可缺少和替代的重要部分。 -
These units mainly consist of clay and nannofossil clay
以微型浮游生物化石粘土為主。 -
The study of neogene calcareous nannofossils from the pearl river mouth basin in the last two decades could be subdivided into two stages ( 1 ) from the beginning period of the 80 ' s to early of the last century, the studies focused on the calcareous nannofossil zones and the descriptions of main genera and species ; ( 2 ) from the middle and late period of the 90 ' s of the last century to the present, the researches concentrated on the high - resolution calcareous nannnofossil biostratigraphy
縱觀二十多年來珠江口盆地新近系鈣質超微化石的研究歷史，大致可分成兩個階段： （ 1 ）上世紀80年代初至90年代初，側重於化石帶的報道及主要化石屬種的描述； （ 2 ）上世紀90年代中後期至今，主要為高解析度鈣質超微生物地層研究階段。
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