proterozoic相关论文
Oldest rocks are sparsely distributed within the Dharwar Craton and little is known about their involvement in the sedim......
Geochemistry and detrital zircon records of the Ruyang-Luoyu groups, southern North China Craton:Pro
Paleo- to Mesoproterozoic sedimentary rocks in the south margin of the North China Craton (NCC) are rep-resented by the ......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
SHRIMP ages of detrital zircons from the Changcheng System in the Ming Tombs area, Beijing: Constrai
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
A Study of Mesoproterozoic Iron Cosmic Micro-spherules from 1.8 Ga and 1.6 Ga Old Strata in the Ming
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Behavioral Diversity and Complexity Indicated by Metazoan Traces at a Topological Level since Proter
On the basis of topological criteria, metazoan traces can be classified as four ichnoorders (clusters) and twenty-two ic......
Geochemistry and geodynamic significance of the rare-earth mineralized Paleoproterozoic Longwangzhua
The Longwangzhuang granite pluton occurs on the southern margin of the North China Craton and consists mainly of biotite......
Tuff beds in Kurnool subbasin, southern India and implications for felsic volcanism in Proterozoic i
A first report on tuff beds from the Owk Shale in the Proterozoic Kurnool sub-basin in southern India is presented.The r......
SHRIMP ages of detrital zircons from the Changcheng System in the Ming Tombs area, Beijing: Constrai
The Mesoproterozoic Changcheng System is widely distributed in the North China Craton. Determining its time of depositio......
Along the Proterozoic stratigraphic sections of Jixian, Tianjin, the ??13C values of carbonates are mostly negative in t......
Molar-tooth Carbonate Sequences and Sr Isotopes in the Neoproterozoic for Stratigraphic Correlation:
Based on a study of Neoproterozoic carbonates in the Jilin-Liaoning-Xuzhou-Huaiyang area, especially its cyclic sequence......
对北京十三陵地区中一新元古界碳酸盐岩进行了系统地采样和207pb/204pb-206Pb/204Pb年龄测定.共测定了63个样品(大部分样品采取两......
四川拉拉铜矿产于古元古宇河口群落凼组，成矿围岩为一套细碧角斑质火山岩及以硅质岩、条带状钠长岩和萤石化黑云母岩为主的喷气岩,......
元古代碳酸盐岩沉积孕育了大量与微生物活动有关的沉积构造，但是对于相同时期的碎屑岩沉积环境中微生物引起的沉积构造的研究却很少......
九十年代以来，随着生物地层学研究的深入发展，我国在元古宙生物演化的研究中，取得了一个接一个的重大进展。其中除了在南方扬子地区约......
The Forming Conditions of and Ore- searching Direction for B, Mg, Pb, Zn and Au Deposits in the Liao
The Liaoji Proterozoic rift is an inter- intracontinenatl rift developed from Archean granite- greenstone tectonic regim......
金石滩是大连地区的国家级风景旅游地,在玫瑰园景点的现代沉积物研究中,首次发现了铁质宇宙球粒,而且含量较多,在2.4 kg（〈0.5 mm）的......
本文通过介绍沧水铺群创建和演绎的过程以及因其被演替后所面临的岩石地层学问题，认为《湖南省岩石地层》（ 1997）中，新元古界底部——......
臼齿（Molar Tooth,简称MT）碳酸盐岩是产于元古代、并具有特殊全球性意义的碳酸盐岩类型之一。MT特有的微亮晶结构、严格的时空分布范......
中一新元古代，全球发生了重大的Rodinia超大陆地质事件。近年研究表明，中国在华南板块发生的晋宁造山运动是Rodinia事件的重要组成部......
通过对江西西北部及安徽南部地区大面积分布的变质岩的研究，双桥山群仅分布在扬子板块修水—祁门构造单元内，而且是一套史密斯地层。......
南秦岭元古宙火山岩主要由两大类岩石构成，一类为SiO2 45%～57%的基性火山岩系，另一类为SiO2 67%～78%的酸性火山岩系，主要岩石类型为细碧......
分布于华北陆块南部的熊耳群火山岩由玄武质到流纹质火山岩组成, 并以玄武安山岩、安山岩为主, 次为英安-流纹岩, SiO2=62%±......
微亮晶构造(Microspar,Molar-Tooth Structure,简称MT)发育于全球各稳定克拉通的中、新元古代盖层碳酸盐岩中。微亮晶构造碳酸盐岩......
Minerogenic System of Magnesian Nonmetallic Deposits in Early Proterozoic Mg-rich Carbonate Formatio
In the early Proterozoic the Li’eryu Formation and Dashiqiao Formation of eastern Liaoning province, China, there are d......
在贫困地区进行建筑设计应当遵循：一切建筑都是地区建筑的观念，尊重客观事实也就尊重了建筑和建筑师自身。面对中国西部地区仍然十分......
本文简略回顾了我国元古宙划分的进展和问题，在我国地质文献中，元古宙通常以２．５Ｇａ，１．８Ｇａ，１．０Ｇａ和０．５７Ｇａ为年代界线划分为在早，中和晚元古代。本文建议以古，中和......
