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- planktic foraminifera biostratigraphy 浮游有孔虫生物地层学
- planktic foraminifera 浮游有孔虫
- Different types of foraminifera thrive at different temperatures. 不同种类的有孔虫在不同温度下繁殖。
- Foraminifera indicate an outer neritic paleobathymetric setting. 有孔虫类显示了外围浅海的古代水深。
- "Below that you tend to get soft-walled foraminifera. 再往下,你就能遇到软壳的有孔虫。”休斯解释道。
- Carboniferous and Permian foraminifera occur extensively in the Chinling Range. 正>秦岭-昆仑构造带横贯东西,是我国三大巨型纬向构造带之一。
- But these shells are absent from the foraminifera found in Challenger Deep. 但是在查林杰海渊发现的这些有孔虫却没有这种甲壳。
- This fauna is associated with Foraminifera, sponge spicules and Brachiopoda et al. 伴生生物有有孔虫、海绵骨针、腕足动物等。
- The early Paleocene planktonic foraminifera are also identified for the first time in Xizang. 在阿里地区普普嘎组和聂聂雄拉组中首次发现了韦拉海扇;
- C-isotope variation of planktonic foraminifera is affected mainly by marine bio-factors. 浮游有孔虫的碳同位素空间变化趋势主要受海洋生物因素影响。
- Most of the foraminifera were soft-walled, either spherical or needle-shaped, and coloured brown. 绝大多数的有孔虫是软壳的,软壳为球状或针状,呈棕色。
- However, the benthic foraminifera are abundant, only less in some coarse sand samples. 底栖有孔虫则较为丰富,仅在较粗砂中底栖有孔虫丰度相对较低。
- The presence of the “marine” Dinophyceae,foraminifera and calcareous ultramicrofossils are attributed to the salinized lakes and abundant nutrients. 出现有“海相”沟鞭藻、有孔虫和钙质超微化石是由于当时湖泊咸化及富养料造成的。
- The fossils of algae, ostracoda, foraminifera, gastropod and polychaeta were found in the Tertiary carbonate beds in the west of Chaidamu Basin. 摘要柴达木盆地西部第三系的碳酸盐岩层中发现有藻类、介形虫、有孔虫、腹足类、多毛类等化石。
- Any of the chiefly marine protozoans of the order Foraminifera, characteristically having a calcareous shell with perforations through which numerous pseudopods protrude. 有孔虫一种有孔虫目的大多为海洋的原生动物,以具有带孔的钙质壳为特征,通过该孔有许多虚足突出
- Data include foraminifera counts and sea surface temperature estimates derived from marine sediment cores from the north Atlantic Ocean. 数据来自于北大西洋海底沉积物的钻芯,包括有孔虫类计算和海面温度估计。
- Benthic foraminifera are now widely used for estimation of surface productivity of the ocean and the oxygen content of the bottom water. 回顾了深海底栖有孔虫生态研究的历史和其在古海洋学中的应用,并强调研究、应用中的新方法、新技术。
- Other important examples are planktonic organisms called foraminifera (which are related to amoeba) and pteropods (small marine snails). 另一个重要例子,是有孔虫(变形虫的亲戚)和翼足类(一种小海螺)两种浮游生物。
- The lower lithofacies consists of tabular sandstone interbedded with mudstone that contains abundant foraminifera and nannoplankton microfossils. 根据最近的古生物研究,卓兰层的顶部可能已进入更新世(见第五表)。
- Oceanic production of calcium carbonate is conventionally attributed to marine plankton (coccolithophores and foraminifera). 海洋中的碳酸钙通常来自于浮游生物(球石和有孔虫类)。