查询词典 Cretaceous

In Kela-2 gas field located in the northern Kuqa depression in the Tarim Basin, the natural gas reserves are mainly accumulated in the litharenite and feldspathic litharenite of braided river delta facies in the Cretaceous Bashijiqi Formation.

塔里木盆地库车坳陷北部的克拉2气田的天然气主要储集于白垩系巴什基奇克组辫状河三角洲沉积的岩屑砂岩、长石岩屑砂岩中，储层孔隙发育，连通性好，以受溶蚀作用改造扩大的粒间孔隙为主。

Also, it was concluded by above paper that the deformation of Hala'alat thrust belt originated from the Late Triassic, inherited at the Late Jurassic and ceased after the Cretaceous.

在《准噶尔盆地哈拉阿拉特山冲断带构造及找油意义》一文中，用于支持其构造模式成立的和什托洛盖盆地的三叠系和二叠系具有很大的推测成分，与实际地质资料差别大。

Hypsilophodon,Early Cretaceous,1.5-2.3m

棱齿龙，白垩纪早期，体长1.5-2.3米。

Jurassic age intraformational shales and claystones and Cretaceous regional claystones seal comprise the reservoirs.

在侏罗纪时期形成的页岩与泥岩以及在白垩纪时期形成的泥岩密封共同构成蓄水池的组成物质。

Large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; Upper Cretaceous; North America.

大型食肉两足恐龙，巨大的牙齿上有刀一样的锯齿；可能算是食腐动物更胜于一个主动的食肉动物；上白垩纪；北美洲。

In the Jurassic and Cretaceous, generally it was also the shelf sea, but there were lacustrine and lagoonal environments in different parts of the basin.

侏罗纪－白垩纪在总的浅海陆棚环境下，盆地不同地区也形成了湖泊和潟湖环境。

This paper has firstly identified these genetic units on shore beach-shore face、longshore zone、 longshore sands、erosional channel、leveed channel、turbidite lobes、turbidite sheet、slump、debris flow、 density-modified grain flow etc; At the same time, and points out that the lake of Cretaceous is open-type fresh water lake.

2首次系统确定滨滩-滨面、沿岸带、沿岸沙坝、侵蚀水道、有堤水道、浊积叶状体、席状浊积、滑塌体、碎屑流、密度改正颗粒流等成因单元。同时指出白垩纪湖泊为开放型淡水湖。

Many species of Magnoliaceae were widely distributed in the Northern Hemisphere, such as Asia, Europe and North America while there was no fossil record in Africa and Oceania since Cretaceous.

自白垩纪以来，木兰科的许多种广泛发生于北半球，如亚洲、欧洲及北美等地，但非洲和大洋洲至今尚未发现木兰科的化石记录。

Among the magnoliaceous fossils, the earliest one is Archimagnolia rostrato-stylosa Tao et Zhang reported from the Lower Cretaceous Dalazi Formation of Yanji district, Northeast China.

该科最早的化石记录为中国东北延吉地区早白垩世大拉子组的喙柱始木兰Archimagnolia rostrato-stylosa Tao et Zhang。

Abundance of salt-alkaline megatherm Classopollis-Ephedripites assemblage in a limited time illustrates a short duration of dry hot climate by latest Cretaceous. Such extreme climatic change and ecologic overturn are possible causes of the dinosaur extinction in the study area. Other factors, such as asteroid impact and large volcanic eruption triggering global mass extinction caused the regional climate change.

嘉荫群上部渔亮子组中膏岩层和耐高温、抗盐碱的克拉梭粉-麻黄粉组合在短时间内的大量出现，说明晚白垩世末期出现有短暂的干热气候，这种气候的突然转变以及伴随的生态系统的紊乱可能是嘉荫地区恐龙大量死亡的重要原因，但不排除诸如天外星体碰撞地球、大规模火山喷发等引发白垩纪末恐龙全球灭绝的因素，后者更可能是引起气候变化的直接因素。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。