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- Late Yanshan stage was compressive crust deformation which not only formed the wedge-type thrust structure but also caused upper Cretaceous Series unconformable contact with lower Cretaceous Series. 燕山晚期地壳以挤压逆冲变形为主 ,不仅形成了楔冲式推覆构造 ,也使上白垩统与下白垩统为角度不整合接触。
- The Baiyinchagan sag is a half graben basin with a fault in the northern side and an overlap in the southern side, where the main oil source and reservoir is lower Cretaceous series. 白音查干凹陷是一个北断南超的箕状断陷湖盆 ,其主要生油、储油层系为下白垩统 ,主要发育冲积扇及扇三角洲沉积。
- lower Cretaceous series 下白垩统
- 3.Late Yanshan stage was compressive crust deformation which not only formed the wedge-type thrust structure but also caused upper Cretaceous Series unconformable contact with lower Cretaceous Series. 燕山晚期地壳以挤压逆冲变形为主 ,不仅形成了楔冲式推覆构造 ,也使上白垩统与下白垩统为角度不整合接触。
- 4.Late Yanshan stage was compressive crust deformation which not only formed the wedge-type thrust structure but also caused upper Cretaceous Series unconformable contact with lower Cretaceous Series. 燕山晚期地壳以挤压逆冲变形为主 ,不仅形成了楔冲式推覆构造 ,也使上白垩统与下白垩统为角度不整合接触。
- 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 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。
- Based on the isotopic dating data of volcanics and recent research achievements of age boundary between Jurassic and Cretaceous systems, it is suggested that the volcanic series in Shengyuan basin must be attributed to Lower Cretaceous. 本文根据盛源盆地火山岩同位素年龄数据和侏罗-白垩系界线年龄的最新研究成果，认为盛源盆地火山岩系的地层时代应属早白垩世。
- Abstract: Based on the isotopic dating data of volcanics and recent research achievements of age boundary between Jurassic and Cretaceous systems, it is suggested that the volcanic series in Shengyuan basin must be attributed to Lower Cretaceous. 文摘:本文根据盛源盆地火山岩同位素年龄数据和侏罗-白垩系界线年龄的最新研究成果，认为盛源盆地火山岩系的地层时代应属早白垩世。
- 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。
- The shale of lower Aptian stage and Barremian stage of Lower Cretaceous is the effective source rock. 有效烃源岩为下白垩统阿普第阶下部和巴列姆阶；
- 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 shale of Lower Cretaceous is uniquely verified to be source rock in B basin of Central Africa region. 摘要中非地区B盆地下白垩统泥岩是该盆地目前唯一证实的烃源岩。
- 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。
- This is in accordance with the structural characteristics of lower Cretaceous and the thermal history of Jiuquan basin group. 这与酒西盆地及其周围地区 (酒泉盆地群 )下白垩统构造特征和盆地群热演化特征一致。
- However, the reservoir porosity and permeability of lower Cretaceous in Erlian Basin is better than that of Yingen-Ejinaqi Basin. 但二连盆地下白垩统储层的孔隙度和渗透率比银根－额济纳旗盆地要好得多。
- 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。
- Abstract： The reservoir rocks of Lower Cretaceous Fuyu and Yangdachenzi unites wrer deposited in channels on the deltaic flood plain in Sanzhao area. 摘 要： 三肇地区下白垩统扶余和杨大城子油层储集岩主要为具有较高杂基含量的岩屑长石细砂岩和长石岩屑细砂岩。
