| 1. | This is subeconomic mineralization related to minor dyke swarms .
这是与小岩脉群有关的准经济意义的矿化。 |
| 2. | The discovery and origin of the round columnar joints in the basic dyke swarms
岩墙群圆柱状节理的发现和成因机制探讨 |
| 3. | Basic dyke swarms ; round columnar joints ; cool shrink ; viscous shearing
基性岩墙群圆柱状节理冷却收缩黏滞性剪切作用 |
| 4. | 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 |
| 5. | The occurrence of the dyke swarm predominately distributed in central zone of the ncc , which is the important geological signature of the ca . 1800 . ma event
在华北克拉通地区广泛发育早元古代基性岩墙群，目前对这些基性岩墙群的系统研究相对较为薄弱。 |
| 6. | 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。 |
| 7. | The round columnar joints are one of the flow structures showing the horozontal emplacement of basic dyke swarms . the round columnar joints show that the basic dyke has rheological behaviour of the viscous shearing in magma emplacement
岩墙发育圆柱状节理表明出露的是岩墙的顶部，反映基性岩墙群侵位时岩浆具有黏滞性剪切作用的流变学特征。 |
| 8. | A rare kind of primary round columnar joints is developed in the basic dyke swarms in the western shandongwhich is made of the radial joints and the round columnar joints with same axis vertical to the strike of the dyke , arranged one by one along the strike of the dyke
在鲁西地区前寒武纪基性岩墙群内发育一种罕见的原生圆柱状节理，由同轴圆柱状节理和放射状节理组成，垂直于岩墙走向，沿岩墙走向排列，是一种指示岩浆水平侵位的流动构造。 |
| 9. | The mesoproterozoic mafic dyke swarms are extensively distributed in the central north china craton , which are not deformed and metamorphic , emplacing the pre - existed fractures , so the dyke swarms become the conspicuous marks to reconstruct the mesoproterozoic tectonic stress field of the central ncc . the mafic dykes in the northern block are transtensional while the dykes in the central and southern blocks are extensional . the mesoproterozoic tectonic stress field could be simulated on the analysis of the distribution and mechanical origin of the mesoproterozoic mafic dyke swarms in the central ncc . the simulation result shows that the mafic dyke swarms were formed in the extensional tectonic setting in the ncc in the mesoproterozoic time , which are related to the extension of the mesoproterozoic yanliao - zhongtiao aulacogens cross the central ncc
克拉通北部地块的镁铁质岩墙群为张剪性，而中部和南部地块为张性。根据华北克拉通中部中元古代镁铁质岩墙群的分布和成因机制分析，来恢复模拟中元古代的构造应力场。数值模拟结果表明镁铁质岩墙群在中元古代形成于伸展的大地构造背景，与横穿华北克拉通中部的燕辽-中条拗拉槽系的伸展作用有一定的联系。 |
