查询词典 cretaceous

An early rift sequence is overlain by a large Late Cretaceous delta, which culminates with the mid-Campanian Rakopi Formation coal measures.

一个早期的裂谷层序上覆有一个较大的晚白垩纪三角洲，后者的顶层则是中坎佩尼阶拉科皮组煤系。

Shenglihe oil shales orientating in NWW-SEE with about 30 kilometers in length are located in the transitional belt between north Qiangtang basin and central uplift belt. The oil shales deposited in Upper Jurassic-Lower Cretaceous marine carbonates and are overlain by tremendous gypsum-salt strata.

胜利河油页岩位于北羌塘盆地与中央隆起之间的过渡带上，呈北西西-南东东向展布，长约30 km，赋矿地层为上侏罗-下白垩统海相碳酸盐岩，其上被厚层膏岩盐覆盖。

Three periods petroleum accumulation exists in South-of-fifth-area oil field, the first period oil and gas is the Jiamuhe group mature and high mature hydrocarbon and the Fengcheng group mature hydrocarbon in late Permian to early Triassic, was destroyed in the Indo-Chinese movement intermediate stage, but some still is conserved in good conserved condition, which is one of exploration objects. The second period is the Fengcheng group high mature hydrocarbon in late Triassic to early Jurassic, which is the important exploration target. The third period is the Jiamuhe group overmature dry gas in the late Jurassic Period to the early Cretaceous.

五区南油气藏存在三期成藏，第一期是佳木河组过成熟干气和风城组成熟油气，成藏期在晚二叠世到早三叠世，在印支运动中期被破坏了，但是在保存条件好的地区仍存在这一期油气藏，它是勘探的对象之一；第二期是风城组高成熟油气，成藏期在晚三叠世到早侏罗世，也是勘探的对象之一；第三期是佳木河组过成熟干气，成藏期在侏罗纪到早白垩世。

Maturity of Lower Cretaceous source rock, researched by the authors, is closely relative to the deposition thickness of the Tertiary and the Quaternary. It shows that source rock at the depth of 4,000-4,400m is low mature, and 4,400-5,200m is in the peak of oil generating. Correspondingly, the source rock of the Zhonggou Formation is immature; the Upper Xiagou Formation is low mature; and the Lower Xiagou Formation and the Upper Chijinpu Formation are in the peak of oil-generating; and the Lower Chijinpu Formation is at the stage of generation of condensate-wet gas with high maturity. There is no source rock reaching the overmature stage of dry gas at present.

可溶有机质转化率、镜质体反射率、热解、生物标志物特征等参数表明：青南凹陷中部的下白垩统烃源岩生油门限深度为4000m（相应的镜质体反射率为0.65％），埋深4000～4400m为低成熟阶段，埋深4400～5200m为成熟生油高峰阶段，因此中沟组烃源岩未成熟，下沟组上部烃源岩低成熟，下沟组下部和赤金堡组上部烃源岩处于成熟生油高峰阶段，赤金堡组下部烃源岩处于高成熟的凝析油—湿气阶段，目前尚无烃源岩达过成熟干气阶段。

Based on the formation and separation of pan continent,the origin time of ancient species of Paeoniaceae might be back to the carboniferous of Paleozoic,and was not later than early Mesozoic.The modern species of the family flourished in Jurassic and early Cretaceous.

起源时间可以追溯到古生代的石炭纪，由于泛大陆形成与分离而形成芍药科的芍药组与北美芍药组遥相对应呈间断分布格局。

The research on stratigraphic correlation based on making stratigraphic Division with an important parameter well Bincan 1 in Haerbin-Suihua area by using regional label bed, lithologic character, electrical characteristics, palaeobiology and igneous rock ages shows that sedimentary Covers in this area have Mesozoic Erathem Cretaceous system Huoshiling formation, shahezi formation, yicheng formation, denglouku formation, quantou formation, qingshankou formation, nenjiang formation, Cenozoic Erathem Tertiary and Quaternary.

在运用区域标志层、岩性、电性、古生物和火成岩年龄等对哈尔滨—绥化地区宾县断陷第一口参数井宾参1井进行详细地层划分的基础上对本区进行了地层对比，研究表明本区沉积盖层自下而上发育中生界白垩系火石岭组、沙河子组、营城组、登娄库组、泉头组、青山口组及嫩江组，新生界第三系和第四系。

The Cretaceous—the last period when dinosaurs ruled the roost—was followed by the Palaeocene.

恐龙主宰世界的最后一个时期是白垩纪时代，之后就进入了古新代。

According to the characters of the palynofloras, the Early Cretaceous palaeoecologic, palaeoclimatic, sedimentary environment as well as palaeogeographic significance have been discussed.

根据孢粉植物群的特征，探讨了该区早白垩世古生态、古气候、沉积环境及古地理意义。

The abundant resources of continental oil and gas originated from continental oil-source rocks which are characterized by their wide distribution in space and full development in time, with four main oilgenerating periods, namely, the late Permian, late Triassic, early Cretaceous and Palaeogene.

这些生油岩在空间展布上具有广泛发育的特点，形成了晚二迭世、晚三迭世、早白垩世和早第三纪四个主要生油期。

In the temproal-spatial′distribution, its source rocks is mainly Palaeogene, secondly Cretaceous and Jurassic of Mesozoic, Triassic, having mudy rocks and coal-rich, their organic carbon being 0.2% and 0.4% respectively.

提出了过渡带气综合判识标志：时空分布上，其源岩主要为下第三系，其次为中生界白垩系和朱罗系、三叠系，以泥质和煤系有机质最丰富，有机碳丰度为0.2％、后者为0.4％。

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。