| 1. | The geochemical characteristics of volcanic rock in the middle proterozoic of qilian block
祁连地块中元古代火山岩地球化学特征 |
| 2. | The simulation of mesoproterozoic tectonic stress field forming mafic dyke swarms in the central north china craton
华北克拉通中元古代岩墙群形成的构造应力场数值模拟 |
| 3. | The geochemical characters of the gaoyuzhuang and yangzhuang formations of mesoproterozoic in pingquan county , hebei province
河北平泉中元古代高于庄组和杨庄组地球化学特征 |
| 4. | Meso proterozoic carbonate - hosted disseminated ( mpcd ) gold deposits are a new type of gold deposit which is discovered in recent years
冀东地区以中元古代碳酸盐岩为容矿岩的浸染型金矿床是近年来新发现的金矿床类型。 |
| 5. | The ree mineralization suddenly occurred and largely distributed on the earth in middle proterozoic metallogenetic epoch in the evolution of the earth
稀土元素成矿与地壳的构造运动密切相关，稀土在中元古代具有大规模暴发性成矿特征。 |
| 6. | The mentioned volcanic activity in yangzhuang formation is expected to propel the study of the proterozoic chronology and tectono - sedimentary evolution of north china
杨庄期火山活动可能提供华北地区中元古代年代地层学和构造沈积演化研究的新证据。 |
| 7. | Stratum composition in xiaoqinling represents early precambrian crystal basement and mesoproterozoic era cover rocks of the typical north china craton
小秦岭区内地层具有典型华北型早前寒武结晶基底和中元古代以来的盖层结构，不发育晚古生代、中生代构造层。 |
| 8. | The minerogenetic epoch lasted from paleoarchean to sinian , with neoarchean , paleoproterozoic and mesoproterozoic - qingbaikouan being the culmination periods
成矿时代从古太古代到震旦纪，但以新太古代、古元古代、中元古代青白口纪3个地质时期为成矿高峰期。 |
| 9. | The round columnar joints show that the dyke swarms are in upper crust brittle tectonic setting , and the western shandong block is brittle extensional in the mesoproterozoic time
岩墙发育圆柱状节理表明岩墙侵位时地块已经处于上地壳脆性构造环境,中元古代鲁西地区是一个脆性伸展的大地构造环境。 |
| 10. | The petrology revelas that the sedimentary environment of the study area is carbonate tide - flat and shallow sea which is also strongly affected by the volcanic materials and wind - brought clastics during the period of yangzhuang
上述岩石特徵表明，研究区在中元古代蓟县纪早期的杨庄期为浅海潮坪碳酸盐沈积环境，沈积作用受中远源火山物质和风携碎屑的强烈影响。 |
