cretaceous system meaning in Chinese
白垩系
Examples
- Subdivision and correlation of the upper beds of the cretaceous system in zhejiang
浙江白垩系上部地层的划分与对比 - It has been found that the cretaceous system is widely distributed in liupanshan region including sanqiao fm , heshangpu fm , madongshan fm , and naijiahe fm
发现宁夏六盘山地区白垩纪地层广泛发育，自下而上划分为三桥组、和尚铺组、李洼峡组、马东山组、乃家河组；从沉积特征、地层层序、沉积相表明。 - 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。 - This paper is carrying out based on the chemical materials of huanhe group of cretaceous system of erdos basin , carrying on relativity analysis about tds and three major anion percentage of meq ( milligram equivalent ) , taking cluster analyses on tds and the three anion percentage of meq , the trend analysis of the percentage of the number of fresh water and the total water with the increases of anion percentage of meq , classifies the new index , divide the groundwater into three kinds according to percentage of meq of three major anion finally defining new groundwater water chemistry : definitely bicarbonate type , relativity bicarbonate type and non - bicarbonate types , point out that the possibilities of fresh water reduce in proper order of these kinds
鄂尔多斯地下水勘查是国家重大的地质调查项目，在地下水水化学研究的几次大型讨论会议上，专家们一致认识到，能不能利用鄂尔多斯盆地地下水勘查项目中的大量地下水水质分析资料，探索出一种新的水化学类型划分方法，对舒卡列夫分类中的25毫克当量百分数的分类界限加以重新考虑，而找出一个与淡水密切相关的x作为分类界限。本文就是以鄂尔多斯自流水盆地白垩系保安群环河组地下水水化学资料为基础而开展相关研究的。 - Kongxi buried hill shows following features in the seismic profiles : the structures are asymmetric . there is flexural syncline on the east side and a monocline on the west side . asymmetric repetition of stratigraphic units is present in the drill wells and the dips of beds and faults are gentle . the permo - carboniferous system of both sides almost lie in the same slope and the events of cambrian or upper proterozoic are continuous from east to west . the phenomenas suggest that kongxi buried hill could be a thrust belt been traced which consists of reverse faults . the imbricate faults mainly effect pre - jurassic strata . there are obvious angular unconformity between jurassic - cretaceous system and paleozoic involved deformation of thrust . the thrust front in some place has cut off the beds of jurassic - cretaceous system . the structural style of the thrust structure changes along the strike of the kongxi buried hill
地震和钻井资料揭露的孔西构造带前第三系潜山的地质特征可以归纳为：构造带总体上不对称构造带内部有地层重复现象石炭二叠系地层的位置明显高于两侧的同一地层的高度。用由34条向东倾斜的逆冲断层组成的叠瓦扇构造模式能够比较合理地解释上述地质特征。该带向东倾斜的逆冲叠瓦状断层组主要影响前侏罗系地层，侏罗白垩系与卷入逆冲构造变形的古生界地层之间有明显的角度不整合。