| 1. | Paleoproterozoic ; wangjiahui granitoids ; partial melting ; recycling of islands arc and continent crustal materials ; tectonic transition ; wutai mountains 古元古代王家会花岗岩部分熔融岛弧和陆壳物质再循环构造转换五台山 |
| 2. | Chondrite normalized ree distribution patterns for the core q43 are comparable to those of the sediment of changjiang river and huanghe river delta 球粒陨石标准化后的稀土元素具有与长江、黄河、黄土等上陆壳沉积物相一致的特征。 |
| 3. | This session will bring together scientists from many countries who have been studying the geological and geophysical processes responsible for deep subduction and exhumation of continental crustal material 本专题将汇集世界多国研究陆壳物质深俯冲和折返的地质与地球物理过程的科学家。 |
| 4. | Networks of satellites already on orbit or soon to be launched are beginning to provide detailed observations of the workings of the atmosphere , ocean , and continental crust over the entire planet 由已经进入轨道或是即将发射的卫星所形成的网络已开始提供有关整个地球的大气、海洋和陆壳运动情况的详细观测资料。 |
| 5. | A large number of studies of geochronology and geochemistry indicate that mesozoic intermediate - felsic rocks from the dabie orogen have originated from recycling of the subducted yangtze continental crust itself 摘要大量的同位素地质年代学和地球化学研究表明,大别山中生代中酸性岩为俯冲扬子陆壳再循环的产物。 |
| 6. | Also , some core samples fronrchangjiang delta and huanghe delta are treated in the same way to have a comparison between core q43 samples and paleosoil samples which deposited in almost the same period 而且,对长江三角洲和黄河三角洲钻孔样品进行了类似处理。同时,还收集了中国陆壳物质的稀土元素资料,进行对比、分析。 |
| 7. | The independent jiangda tectonic belt has appeared since late carboniferous , following the jinshajiang ocean crust of subducted beneath the changdu continental crust and the continental margin arc formed in east of changdu terrane 自晚石炭世金沙江洋洋壳开始向昌都陆壳地体边缘下俯冲,形成陆缘弧以来,独立的江达构造带就得以产生。 |
| 8. | During the magma evol ution , this primary magma suffered effects of the containing water fluid and a small extent contaminate of continental crust . according to all of features above , the paper analyzes the formatting mechanism of high - mg volcanic rocks 岩浆演化过程中遭受到了含水流体的影响及轻微的陆壳混染。根据以上特征对高镁火山岩的形成机制作了分析。 |
| 9. | The formation dynamic mechanisms is very complicated . the uplifting and thickening of crust are the result of various causes . but the main reason is the plate subduction which is the basic cause to have the gravitation , thermo - dome and stretching force become useage 青藏高原处于复杂的动力体制中,陆壳增厚和隆升是各种因素共同制约的结果,但板块俯冲机制是主导的,是使其它力源,如重力、热动力和张力等成为有效驱动力机制的基本因素。 |
| 10. | 2 . 6 2 . 7ga , these granitoids are most likely to be derived from the partial melting of hybrids both 2 . 6ga metavolcanic materials in archean wutaishan magmatic arc and older continent crustal materials under lower than 1 . 2gpa . petrological and geochemical characteristics of wangjiahui granitoid intrusion suggest that is probably fored under post - collisional tectonic background 2 . 1ga在- 3 . 82 - 2 . 80范围,表明王家会古元古代花岗岩最有可能形成于大约2 . 6ga五台山大洋岛弧火山岩物质和更老的陆壳物质在 |