PROTEROZOIC相关论文
Conophyton(Maslov)is a cylindroidal stromatolite form-genus characterized by nested conical laminae.Well-preserved Conop......
It is believed that the albite-potash-feldspar-greenschists in the middle Proterozoic Langshan Group in Tanyaokou Distri......
MICROFOSSILS FROM LATE PROTEROZOIC MANGANESE ORE DEPOSITS IN WESTERN HUNAN PROVINCE AND EASTERN GUIZ
Abundant microfossils and organic residuals have been discovered by SEM and normal palynological maceration from mangane......
Early oceans(>520 Ma) were characterized by widespread water-column anoxia, stratification, and limited oxidant availabi......
A Study on the Middle－Upper Proterozoic and Lower Palaeozoic Source Rock from the Huabei Areain Chin
ＡＳｔｕｄｙｏｎｔｈｅＭｉｄｄｌｅ┐ＵｐｐｅｒＰｒｏｔｅｒｏｚｏｉｃａｎｄＬｏｗｅｒＰａｌａｅｏｚｏｉｃＳｏｕｒｃｅＲｏｃｋｆｒｏｍｔｈｅＨｕａｂｅｉＡｒｅａｉｎＣｈｉｎａ①ＦａｎＰｕ１ＺｈａｎｇＢａｉｓｈｅｎｇ１ＬｉＪｉｎｇｇｕｉ１ＺｈａｎｇＱｉａ.........
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 ......
Strongly seasonal Proterozoic glacial climate in low palaeolatitudes:Radically different climate sys
Proterozoic(pre-Ediacaran) glaciations occurred under strongly seasonal climates near sea level in low palaeolatitudes.M......
We report the calcite twinning strain results of a traverse across the Grenville orogen from Parry Sound,Ontario(NW)to F......
Behavioral Diversity and Complexity Indicated by Metazoan Traces at a Topological Level since Proter
本文通过对荣华二采区10...
本文通过对荣华二采区10...
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......
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......
Geochemistry and geodynamic significance of the rare-earth mineralized Paleoproterozoic Longwangzhua
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......
The volcanic rocks of the Xiong'er Group occur widely in the southern part of the North China Craton, which mark the beg......
A Study of Mesoproterozoic Iron Cosmic Micro-spherules from 1.8 Ga and 1.6 Ga Old Strata in the Ming
Numerous iron cosmic micro-spherules have been discovered from Mesoproterozoic strata including the Changzhougou Formati......
对溪灯坪金矿区芹菜塘矿段的基础地质特征以及以往地质勘查工作取得的成果做了论述和总结,认为该矿段内下元古界石门关组地层中广......
多种同位素方法定年结果证实了云南金平龙脖河铜矿区变钠质火山岩系形成于元古古。（1596±140）Ma的Pb-Pb等时年龄表明其形成时代......
通过1：5万矿产远景调查在祁漫塔格中部圈定出5个大小不等的元古代中酸性高钾（变质）侵入岩体。岩性为灰-浅肉红色眼球状二长片麻岩，分布......
云开变质岩区隐蔽有两个不整合面，其分别代表华夏运动与晋宁运动。上隐蔽不整合面处在海西期中－深层次的绿片岩相滑脱拆离带中，上、下......
年代学与钕模式年龄资料表明，红河成矿带的衰牢山群和瑶山群变质岩系属同一地层系列，主体部分形成时代为１．３５－１．７Ｇａ，但也存在晚元古代斜长角闪岩......
在吉林省南部元古宇石英岩内发现磁性微球粒３９２枚，根据其产状，形貌及一般特征，微结构和化学组成表明为陨石消融型宇宙尘，由４亚４小类组成一个......
本文对扬子块体南缘构造侵位于板溪群（及相应地层）的皖南和赣东北晚元古代蛇绿岩进行了系统的元素和Ｓｍ－Ｎｄ同位素地球化学研究，结果表明两套......
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辽宁中部静北潜山油藏位于新生代辽河盆地的北端，其元古界储层发育着密集、遍布和不规则的裂缝网络。本文充安６７井岩心为例，描述了该区......
ＩＮＴＲＯＤＵＣＴＩＯＮＡｌａｒｇｅｃｈａｎｇｅｉｎｃｈｅｍｉｃａｌｃｏｍｐｏｓｉｔｉｏｎｏｆｍａｎｔｌｅａｔｔｈｅＡｒｃｈｅａｎ－Ｐｒｏｔｅｒｏｚｏｉｃｔｒａｎｓｉｔｉｏｎ（Ａｒ－Ｐｔｂｏｕｎｄａｒｙ）ｏｆ２．５Ｇａｗａｓｓｕｇｇｅｓｔｅｄｂｙｍａ.........
豫西太华群一名已沿用了３０余年，在这套中深变质岩系中，过去从未发现生物化石，前人根据变质程度及构造格架一直将其归入太古宇。笔者对小......
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......
元古宙爆破角砾岩型店切坊金矿床中的黄铁矿是主要载金矿物，黄铁矿多为（１００），属硫亏损型（Ｆｅ１．００００Ｓ１．８７７５－１．９８２１）Ｃｏ／Ｎｉ〉１（１．５－５．８７５），热电系数导型为Ｎ型，δ＾３４Ｓ＝４．８‰～６．８‰，形成于温度较同（２２０～４３８℃），氧逸度......
Ｖａｌｅｒｉａｌｏｐｈｏｓｔｒｉａｔａ是一种具明显纹饰有机壁的球状疑源类微体化石，对它的３０个已知化石记录进行也评论。春产地集中在北纬３０°以北；并在近７亿年的时间间隔......
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——......
小秦岭地区是华北克拉通中央带南部一个重要组成部分。关于其地壳组成、变质作用，尤其是岩浆作用年龄的研究，对确认小秦岭地区在1．85～1......
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。......
