查询词典 cretaceous

We have extracted DNA from the inclusion of a dinosaur egg fossil from the Late Cretaceous in Xixia Henan,China, DNA fragments are isolated from the floccus in the cavity of the egg fossil,and confirmed by the method of random primer isotope labelling.

本文从河南省西峡晚白垩世的一枚保存方式特殊的恐龙蛋化石中提取DNA，经过￣32P同位素标记和电泳分析，发现在蛋内腔的絮状物样品中确有DNA片段存在。

in this paper can be summarized as follows: 1 Based on the Zongshan Section of Gamba and the Chuangde Section of Gyangze in southern Tibet, three Upper Cretaceous units have been recognized as black, gray and red ones.

本论文主要得出了以下几点认识： 1由西藏南部晚白垩世的岗巴宗山剖面和江孜床得剖面可以识别出三套岩层：黑层段，灰层段和红层段。

The Gamba basin of southern Tibet, is located in the east of Tethys tectonic region, whereexposes complete strata from late Cretaceous to Paleogene. The strata yield abundantfossils, and accurate biostratigraphic works have been done by previous studies.

西藏南部岗巴盆地位于位于特提斯构造域的东端，发育有完整的晚白垩世至古近纪地层，地层中化石丰富，前人根据化石研究准确地进行了地层时代的划分。

Foraminiferal fauna ; Recovery ; Late Cretaceous ; Gamba ; Tibet

有孔虫动物群；生物复苏；晚白垩世；岗巴；西藏

The lithologic pool such as that developed in the actic region while the basin is rifting or in the glacis region while the basin is depressing all which can be found in this basin. Five kinds of sedimentary facies and thirteen sedimentary parfacies can be found in the Shengbei concave during the period of Jurassic series and Cretaceous series.

在该盆地内部既有可能发育断陷期陡坡带的岩性油气藏，又有可能发育坳陷期缓坡带的岩性油气藏，其胜北洼陷在中侏罗统－白垩系沉积时期主要发育5种陆相沉积相类型、10种沉积亚相类型。

Genus of herbivorous dinosaurs flourishing during the Cretaceous in South America.

在南美洲于白垩纪兴起的一种食草恐龙。

Huge herbivorous dinosaur of Cretaceous found in Argentina.

白垩纪生活在阿根廷的巨大的食草恐龙。

Hesperornis is an extinct genus of flightless aquatic birds that lived during the Late Cretaceous.

黄昏鸟是一种已经灭绝的不会飞翔的水鸟，生活在白垩纪晚期。

The eight major research topics are :①understanding coremantle processes, by deep drilling into a large oceanic plateau in the Western Pacific;②detailed investigation of material circulation during greenhouse Earth, and the transition process from greenhouse to icehouse environments, by drilling Cretaceous to Cenozoic sediments in the Pacific,③understanding the process of continental crust formation by deep drilling into oceanic arc,④Understanding the process of oceanic lithosphere formation by deep drilling of the back arc spreading system,⑤understanding of continentoceanatmosphere linkage, by drilling in the marginal seas and continental slopes of Asia,⑥investigation of the carbon cycle and the deep biosphere in accretionary prisms,⑦investigation of the mechanism and cycles of great earthquakes, tectonics, and mass circulation in convergent plate margins,and ⑧biology of extreme microorganisms living in deep accretionary prism environment.Keywords : Japan IODP Drilling Scientific goals.

其八项研究目标为：①钻探西太平洋洋底高原，认识核—幔作用过程；②钻探太平洋白垩纪—新生代沉积物，详细研究地球温室期间的物质循环及从温室环境到冰室环境的转化过程；③钻探大洋岛弧，认识大陆地壳形成过程；④钻探扩张的弧后，认识洋壳岩石圈形成过程；⑤钻探亚洲边缘海及陆坡，认识陆壳—洋壳—大气圈关系；⑥调查增生楔中的碳循环及深部生物圈；⑦调查汇聚板块边缘大地震周期及形成机制、构造及物质循环；⑧研究生活于增生楔环境中极端微生物生物学。

Iguanodon was published in 1825. Iguanodon was living during Early Cretaceous and it was long as 4m.

曼特尔直到1825年才对他的发现进行描述，并将研究结果与化石交给伦敦皇家学会。1833年，吉迪恩·曼特尔发现了生活在白垩纪早期的林龙，林龙的体长可达4M。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。