| 1. | 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 |
| 2. | 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 |
| 3. | The grenville - aged orogen is a tie to link most of the continental blocks in rodinia , which existed during the period from late mesoproterozoic through early neoproterozoic
Grenville期造山带存在于中晚元古代，是连接rodinia各陆块的纽带。 |
| 4. | 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。 |
| 5. | 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。 |
| 6. | The mesoproterozoic wumishan formation in jixian , tianjin represents a succession of 300 - m thick carbonate strata , in which stromatolite biostromes and clotted bioherms are best developed
天津蓟县中元古界雾迷山组为一套厚3000余米的碳酸盐岩地层，叠层石生物层和凝块石生物丘特别发育。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | Some conclusions are listed as follows : the plateform cover cap of ordos basin and its circumference areas can be divided into five tectonic sequences . the tectonic evolution of ordos basin can be classified in six stages : the basement formation phase ( from archeozoic to paleoproterozoic ) ; the aulacogen phase ( from mesoproterozoic to neoproterozoic ) ; the north china continental sea phase ( from sinian to early - paleozoic ) ; the north china intracratonic depression phase ( from late - paleozoic to early mesozoic ) ; large ordos inland basin phase and the formation of independent ordos basin ( mid - late mesozoic ) ; fault basin phase around the ordos basin ( cenozoic )
通过研究有以下成果及认识：鄂尔多斯盆地及其周缘地区沉积盖层可划分为五大构造层序，盆地的形成和演化分为六大构造阶段：太古代至古元古代基底形成阶段、中新元古代克拉通内裂陷槽或坳拉槽演化阶段、震旦纪?早古生代华北陆表海盆演化阶段、晚古生代?早中生代华北克拉通坳陷演化阶段、中生代中晚期大鄂尔多斯内陆盆地演化阶段及独立鄂尔多斯盆地的形成、新生代周缘断陷盆地演化阶段。 |
