1) Middle-Upper Proterozoic
中上元古界
1.
Characteristics and ore-controlling factors of uranium mineralization in Middle-Upper Proterozoic of Jiangchuan-Jianshui area
江川-建水地区中上元古界铀矿化特征及其控矿因素
2) Middle-Upper Proterozoic
中、上元古界
1.
Eighty-three samples of Middle-Upper Proterozoic were collected from in North China and their carbon isotopic composition of the analyzed kerogens ranges from-35‰ to-26‰(PDB)Previous research indicated that sapropelic type kerogen was relatively rich in ~(12)C(δ~(13)C<-28‰.
华北北部中、上元古界岩样干酪根碳同位素组成在-35‰～-26‰之间,前人研究表明,腐泥型干酪根相对富集12C(δ13C小于-28‰),所以,研究区源岩干酪根类型为腐泥型和腐殖 腐泥型。
3) Neoproterozoic-Mesoproterozoic
中-上元古界
1.
Neoproterozoic-Mesoproterozoic Upwelling Lithofacies and Facies Model in North China Block
华北地块中-上元古界上升流岩相类型及相模式
4) Mesoproterozoic
[,mesəu'prɔtərə'zəuik]
中元古界
1.
Microdigital stromatolites and their response to stromatolite decline at 1250Ma± for the Mesoproterozoic Wumishan Formation at Jixian section in Tianjin;
天津蓟县中元古界雾迷山组微指状叠层石及其对1250Ma±叠层石衰减事件的响应
2.
Sedimentation and evolution of the Mesoproterozoic Kunyang Group in the Huili Huidong region, Sichuan and its adjacent areas;
四川会理-会东及邻区中元古界昆阳群沉积特征及演化
3.
Research on the Sequence Stratigraphy and Sedimentology of the Mesoproterozoic Gaoyuzhuang Formation in the Yanshan Region;
燕山中元古界高于庄组层序地层及沉积特征研究
5) palaeo-middle Proterozoic
古-中元古界
6) Jixian?type mid?upper Proterozoic
蓟县型中、上元古界
1.
On the Jixian?type mid?upper Proterozoic sedimentaryenvironment and the character of Inner Mongolian Axis;
关于蓟县型中、上元古界沉积环境及内蒙地轴的性质
补充资料：中上元古界标准地层
中上元古界标准地层在蓟县北部山区，始于县境东北端的常州村，沿东北至西南方向层层叠复，直至临近县城的府君山。这里有一块保存完好的古代地层，地层总厚9197米，剖面长约24公里，以顶底清楚、构造简单、变质极浅、古生物化石丰富而著称。据测，该地层的地质年龄约为19亿至8.5亿年，由老至新分为长城系、蓟县系、青白口系三个地层单位，包括11组105层。1984年国务院批准将该剖面列为第一个国家级地质自然保护区，下设陈列馆，集地学资料、学术研究、自然景观于一体，填补了中国此类自然保护区的空白。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条