1)calcareous nannofossil钙质超微化石
1.Distribution of calcareous nannofossils in surface sediments of South China Sea;南海表层沉积物中钙质超微化石分布特征
2.A thin marine depositional interval of the Wenchang Formation in Well HJ 15-1-1 of the Pearl River Mouth Basin was analysed by using calcareous nannofossil.本文研究了珠江口盆地HJ15-1-1并文昌组一个海相夹层中的钙质超微化石,据在该层中出现Spheno-lithus furcatolithoides、Ericsonia formosa、Neococcolithus dobius,而未见有真正的Reticulofenestra umbilicus,认为该超微化石组合的生物地层位置应为中始新统NP15带。
3.Deep-sea Core WP7 (3°56 S,156°E, and water depth 1 580 m) retrieved from the nuclear region of western Pacific warm pool (WPWP) was selected for benthic foraminifera and calcareous nannofossil study.对取自热带西太平洋暖池核心区的WP7岩心进行了底栖有孔虫和钙质超微化石研究。
英文短句/例句
1.NEW MATERIALS OF THE CALCAREOUS NANNOFSSIL IN THE MIDDLE EOCENE WENCHANG FORMATION FROM THE PEARLRIVER MOUTH BASIN珠江口盆地中始新统文昌组钙质超微化石新知
2.LOWER AND MIDDLE EOCENE CALCAREOUS NANNOFOSSILS FROM THE SOUTHWESTERN CONTINENTAL SHELF BASIN OF THE EAST CHINA SEA东海陆架盆地西南部海相始新统钙质超微化石
3.NEOGENE CALCAREOUS NANNOFOSSILS FROMWESTERN PACIFIC OCEAN AND DIVISIONOF NANNOFOSSIL ZONATION西太平洋晚第三纪钙质超微化石及其化石带的划分
4.NEOGENE CALCAREOUS NANNOFOSSILS FROM THE HUANGLIU FORMATION OF THE YINGGEHAI BASIN, SOUTH CHINA SEA南海北部莺歌海盆地上第三系黄流组钙质超微化石
5.Based on the researches of Neogene calcareous nannofossils from the Pearl River Mouth Basin, this paper briefly reviews the researching and developing process.根据珠江口盆地新近系钙质超微化石研究文献，综述了研究内容及发展过程。
6.CALCAREOUS NANNOFOSSILS ANALYSIS AND THE AGE OF CORES FROM WEST PHILIPPINE BASIN-MARIANA TRENCH西菲律宾海盆-马里亚纳海槽区柱状岩芯中钙质超微化石分析及地层时代
7.Paleocene-Eocene Calcareous Nannofossils of Onshore Wells from the Coastal Plain of New Jersey and Maryland, U. S. A.美国新泽西州和马里兰州海岸平原近岸井古新统-始新统钙质超微化石分析
8.CALCAREOUS AND SILICEOUS MICROORGANISMS IN SURFACE SEDIMENTS OF CHUKCHI AND BERING SEAS楚科奇海与白令海表层沉积中的钙质和硅质微体化石研究
9.To make or become stony or chalky by deposition of calcium salts.钙化通过钙盐的沉积作用使变为石质或白垩质
10.The siliceous impurities in the ore are removed by reaction with the calcium oxide that is formed when the limestone is heated, CaO + SiO2--Ca-SiO3.矿石中含硅的杂质同氧化钙(加热石灰石形成的)化合而被排除出去。
11.Effect of CaO on Hydrogen Production by Vaporization From Biomass in Supercritical Water氧化钙对生物质在超临界水中气化制氢的影响
12.Ultramicrostructures of the Ultrahigh-Pressure Metamorphic Rocks from Dabie-Sulu Terrane;大别—苏鲁超高压变质岩石的超显微构造研究
13.Growth of Calcium Oxalate Crystals in Liposome Systems and Preliminary Investigation of Ultrafine Particles in Urines;脂质体中草酸钙晶体的生长及尿液中超细微粒的初探
14.Determination of CaO and MgO in Quartz Sand by FAAS with Microwave Digestion微波消解-火焰原子吸收光谱法测定石英砂中的氧化钙和氧化镁
15.Analysis of Nd :YAG Laser-treated enamel surfaces钕钇铝石榴石激光照射牙釉质表面后钙磷含量变化的分析
16.Formation of xonotlite during hydrothermal synthesis in the mixture of quartz and lime晶质二氧化硅与工业石灰水热合成硬硅钙石反应历程
17.Ultrasonographic Differential Diagnosis of Intrahepatic Bile Duct Lithiasis and Intrahepatic Calcification Foci and Intrahepatic Bile Duct Pneumatosis超声对肝内胆管结石与肝内钙化灶及肝内胆管积气的鉴别诊断
18.The effect of calcium chloride injection on Warner-Bratzler shear force(WBS) and ultrastructure of mutton氯化钙注射对羊肉剪切力和肌肉超微结构的影响
相关短句/例句
calcareous nannofossils钙质超微化石
1.344 8°E,water depth 3 382 m) was used to study the δ18O and δ13C variations of calcareous nannofossils.对西菲律宾海Ph05-5柱状样190ka以来钙质超微化石进行了氧碳同位素分析。
2.Based on the researches of Neogene calcareous nannofossils from the Pearl River Mouth Basin, this paper briefly reviews the researching and developing process.根据珠江口盆地新近系钙质超微化石研究文献,综述了研究内容及发展过程。
3.Florisphaera profunda is one of the lower euphotic zone species of calcareous nannofossils, and it is widely used in the palaeoceanography and palaeoclimate research.Florisphaera profunda是古海洋学研究中应用最广的一种钙质超微化石。
3)calcare-ous nannofossil zone钙质超微化石带
4)calcareous microfossil钙质微体化石
5)calcareous nanofossils钙质超微
1.Ten genera of calcareous nanofossils such as Coccolithus and Reticulofenestra have been discovered in terrestrial sediments of Cenozoic-present salinized lakes from fifteen places in northwest and northeast China.在我国西北和东北15个地区新生代一现代陆相成化湖沉积物中,发现钙质超微化石Coccolithus、Retic-ulofenestra等10个属。
6)nannofossils超微化石
1.New data of nannofossils in the Shadui Formation in the Yamzho Yumco area, Tibet;西藏羊卓雍地区沙堆组超微化石新资料
2.Calcareous nannofossils analysis has been carried out for 308 surface sediment samples taken from the west of the South China Sea within a wide range of water depth from 36 to 4 245 m.分析研究了南海西部 30 8个表层沉积样品中的钙质超微化石 ,发现除一个样品外 ,所有样品均含有钙质超微化石 ,但相对丰度相差悬殊 ,在 0～ 172 5个范围内变化。
延伸阅读
钙质超微化石钙质超微化石calcareousnannoplankton1～35微米大小的碳酸钙质化石。包括颗石藻类所产生的颗石及与其相似的化石，也包括与颗石化石共生并且大小相近，但形状不同，归属不明的绝灭类别如白垩纪的微锥石类与第三纪的盘星石类等。颗石金藻门颗石藻纲单细胞生物的产物。颗石藻既具载色体，可以制造营养；又有鞭毛可以运动。因而长期被动物学家视为动物，被植物学家归为植物，但多被列为藻类并采用植物学命名方法。颗石藻在细胞的外层分泌出颗石，并排列成球面状，形成颗石球，每个颗石藻所含颗石数量不等，最多可达200余枚，即使同一种的个体其颗石数量亦有一定幅度变化。颗石由许多细小的方解石晶体排列而成。通常的颗石由近极盾和远极盾相叠而成，在正交偏光下颗石的盾显示出四条消光带。颗石通常呈椭圆形颗石、桥石、艾氏石、圆形钙盘石、螺旋形螺球石等，也可以为边缘加厚的盘石形（条球石）及边缘高耸的(篮石)或长菱形的舟石型（舟石）和长棒形的棒石型（棒石）等。非颗石类碳钙质超微化石与颗石类形状不同而与之共生，一般构造比较简单，大多由少量的方解石晶体构成，个体也往往较大，如五个片状晶体构成的五边石型、两个晶体组成钩形或马蹄形的角状石型、几个长形晶体构成的星石、短柱楔形的楔石型等等。有的已经查明属性，如由多边形晶体组成空球状的胸球石属于钙质甲藻。经济意义及应用可靠的钙质超微化石始于侏罗纪，但在古生代与三叠纪地层中亦曾有零星发现，如中国南部泥盆系中便曾有报道。钙质超微化石个体微小，数量极多，在1立方厘米现代大洋钙质软泥中可含多达1万亿枚的颗石，在浅海沉积中亦可达10亿枚，因此一般取样几分之一毫升即可，适用于海底钻孔和岩屑、壁心样品。加以超微化石分布广泛、演化迅速，是深海钻探和海上石油勘探中生物地层工作的主要依据之一。钙质超微化石对温度反应灵敏。因而可以按属种分布作古温度定性定量分析，还可以用钙质超微化石的氧同位素δ18O测定古温度。
