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- The facies types of the Lower Cretaceous are mainly delta,lake and turbidity. 下白垩统的扎赉诺尔群的沉积相的主要类型为三角洲相,湖相和浊流相。
- The unconformity between the Eocene and the Lower Cretaceous is common in Jiuquan basin. 酒泉盆地普遍发育了始新统与下白垩统之间的不整合。
- The Cenozoic sedimentary thickness, which is smaller than the Lower Cretaceous denuded thickness, cannot make up heat losses caused by denudation. 新生界沉积厚度小于下白垩统剥蚀量 ,未能弥补剥蚀造成的热损失。
- In conclusion, the Lower Cretaceous in Kuqa Depression recorde a whole episode of foreland basin tectonic evolution. 总之,库车坳陷下白垩统记录了一幕完整的前陆盆地构造演化过程。
- The main source rocks are Wudanggou and Changhangou Formations of Middle-Lower Jurassic, the Lower Cretaceous Guyang Formation. 经野外露头剖面和钻井岩性分析,下、侏罗统五当沟组、汉沟组和下白垩统固阳组发育深湖半深湖相泥()、质泥岩和泥灰岩,是区内主要的烃源岩。
- The stippled area shows the distribution of a clean, permeable sandstone in the lower part of the lower cretaceous Muddy Formation. 图上画点部分为下白垩纪马迪组下部洁净,渗透的砂岩分布区域。
- Rhyolite with columnar joints has been found in the lower Cretaceous Yingcheng Formation, in an uplift area of the southeastern Songliao Basin. 摘要松辽盆地东南隆起区下白垩统营城组出露柱状节理流纹岩。
- The pollen grains resemble to a remarkable degree Clavatipollenites of the Lower Cretaceous period, one of the oldest angiosperm fossils. 其花粉类似于最古老的被子植物化石之一: 晚白垩世的棒纹粉。
- The ammonites from the lower shale and isotope age from its upper volcanic rock(define) the age of Sangxiu Formation from Berriasian to Hauterivian of Lower Cretaceous. 桑秀组下部的页岩段与江孜甲不拉组的最下部地层相当,上部火山岩的同位素年龄为133 M a。
- The Lower Cretaceous Bentiu Formation is the major pay zone,It is covered by the Darfur Group,especially the massive mudstones of the Aradeiba Formation. 盆地的主力产层为下白垩统的Bentiu组,上覆的区域盖层是Darfur群,尤其是Aradeiba组的大套泥岩。
- Dutton S P,T N Diggs.Evolution of porosity and permeability in the Lower Cretaceous Travis Peak Formation,East Texas[J].AAPG Bulletin,1992,76 (2):252-269. 王多云;史基安;王琪.;鄂尔多斯盆地西南延长组优质储层形成机理与分布规律研究;内部报告
- The coal-accumulating process of the lower Cretaceous ChanglingFormation was formed in a half graben of the NE trending fault zone which posited on theJinJatun Formation andesite. 下白垩统的长岭组聚煤作用形成于金家屯组安山岩上的北东向断陷带之中,聚煤盆地类型以半地堑式为主。
- According to the principle of sequence stratigraphy, the Lower Cretaceous could be divided into five unconformities (T5,T4, T3, T1-1, T03) and three sequences. 根据层序地层学原理,松辽盆地下白垩统可划分出五个不整合(T5、T4、T3、T1-1、T03)以及三个层序。
- There are two strata series of the Lower-middle Jurassic and the Lower Cretaceous potential source rock in Yinger depression, the eastern Jiuquan basin. 酒东盆地营尔凹陷存在下白垩统和中、下侏罗统2套生油层。
- The Xihulitu Basin, located in the eastern Inner Mongolia, is a downfaulted basin and the Damoguaihe Formation of the Lower Cretaceous constitutes its depositional cover. 摘要西胡里吐盆地是位于内蒙古东部的一个早白垩世断陷盆地,盆地盖层由下白垩统大磨拐河组构成。
- Comparing with the lower cretaceous poles from the Ordos basin in the west of North China Block,we conclude that Haiyuan area could suffered a non-significant northward motion and rotation with respect to the stable Ordos basin since the lower Cretaceous. 通过对比华北地块鄂尔多斯盆地的早白垩世古地磁结果 ;表明采样地区自早白垩世以来相对于华北鄂尔多斯盆地未发生明显的构造旋转和纬度方向上的位移 .
- Migration characteristics of oil and gas is summarized as below: 1)Hydrocarbon discharge ratio of 2 sets of mature source rocks (K_1ba and K_1bt~1) in the Lower Cretaceous is about 32%-72%, thus estimated as the main hydrocarbon discharge stratum. 主要的认识为:1)本区下白垩统K1ba和K1bt12套成熟烃源岩排烃率可以达到32%25~72%25,是主力排烃层。
- The main hydrocarbon source rocks in the Muglad basin are developed in the Lower Cretaceous lacustrine rocks of the Abu Gabra (AG) formation. The AG formation can be roughly subdivided into the lower, middle and upper parts. 主要烃源岩发育在下白垩统 AG组 ,该组上部以砂岩为主 ,生烃潜力差 ,下部主要是干旱气候期的沉积 ,生烃潜力亦差 ;
- The sediments of the Early Cretaceous were dominated by clastics.Black shales were mainly developed in the member 4 and member 5 of Kuco Formation and Dongshan Formation of the Lower Cretaceous. 早白王垩沉积以碎屑物质为主,黑色页岩主要集中于下白垩统古错四组、古错五组和东山组。
- The discovery of feathered dinosaurs and early birds from the Lower Cretaceous of Liaoning, N.E.China have convinced most students that birds did evolve from coelurosaurian theropod dinosaurs. 在中国东北辽宁发现的早期白垩纪带羽毛的恐龙和早期鸟类的化石,已让大多数学者相信鸟类是从兽脚亚目蜥尾类恐龙演化而来。