xenolith造句
例句与造句
- There are distributed a great number of cenozoic basalts and mantle derived xenoliths in north china and south china . for understanding the materials constitutes , evolution , mantle metasomatism , and inhomogeneity of the lower crust and upper mantle , there is a must of doing some research on these host basalts and the xenoliths
华北、华南地区发育大量新生代玄武岩及幔源包体，对其进行研究，有利于进一步深入了解下地壳和上地幔的物质组成、演化、地幔交代和不均一性以及地球物理反演结果的可靠性等。 - Major , trace element composition and sr - nd - pb isotopes of the cenozoic basalts from yangyuan ( hebei province ) and datong ( shanxi province ) , which are located to west of the daxinanling - taihanshan gravity lineament , as well as mineral chemistry , major and trace element composition and sr - nd isotopes of mantle xenoliths from yangyuan are reported in this thesis
本文报道了大兴安岭-太行山重力梯度带以西河北阳原和山西大同新生代玄武岩的元素和sr - nd - pb同位素地球化学及阳原幔源包体的矿物化学、元素和sr - nd同位素地球化学，据此对华北克拉通西部上地幔的性质和过程进行了初步讨论。 - Based on the study of correlativity of ol - opx - cpx contents in north china and south china , it shows that some peridotite xenoliths from hannuoba , pingquan , nvshan , puning , qiongbei , and niutoushan area may represent the older mantle material compositions , and some peridotite xenolith from ximeng , penglai , linqu , quzhou , mingxi , and liuhe area may represent the younger mantle material compositions
通过对华北、华南两区橄榄岩包体中的o1与opx及cpx的相关关系的分析研究认为，华北汉诺坝和平泉地区，以及华南女山、普宁、琼北、牛头山等地区的部分橄榄岩包体，代表了老地幔；锡盟、蓬莱、临朐及衢州、明溪、六合等地区的部分橄榄岩包体代表了较新地幔。 - Because of the absence of mantle xenoliths and xenocrysts , it is the first time that this paper looks on the native heavy minerals deriving from mantle , which were collected at the terraces of the two rivers , kalakshi river and yulongkashi river , as objects and takes into account the geochemical characteristics of the rocks deriving from mantle such as keliyang lamproite and so on to study the composition of lithospheric mantle , the characterics of palaeozoic era lithospheric mantle , mantle thermal state , and diamond metallogentic mantle geological conditions in research field
为达到研究目的，本文首次以喀拉喀什河和玉龙喀什河沿岸阶地的幔源重砂矿物(单斜辉石、铬尖晶石类矿物、钛铁矿以及石榴石)为研究对象，结合钾镁煌斑岩等区内已发现的幔源岩石及其中地幔物质对该区地幔物质的组成、古生代岩石圈地幔特征、岩石圈热状态以及该区金刚石成矿地幔地质条件做了尝试性的研究工作。 - The comparison of cenozoic basalts and their mantle xenoliths from both sides of the taihangshan gravity lineament reveals that : ( 1 ) cenozoic basalts from western and eastern north china display opposite temporal trends , suggesting lithospheric thinning in western north china during the cenozoic and lithospheric thickening in eastern north china ; ( 2 ) the lithospheric mantle in the west is mostly late - archean to proterozoic in age , whereas that in the east has a modern age with minor proterozoic age ; ( 3 ) the crust mantle transition in the west is considerably thicker than in the east , probably due to different extents of magmatic underplating
摘要通过对比华北太行山重力梯度带两侧新生代玄武岩及其中幔源包体的成分，发现： ( l )华北东、西部新生代玄武岩具有相反的演化趋势，说明新生代以来西部岩石圈逐渐减薄，而东部岩石圈逐渐加厚； ( 2 )西部岩石圈地幔组成相对复杂，年龄多为晚太古代元古代；而东部岩石圈地幔组成相对单一，年龄多为现代值，少数为元古代； ( 3 )西部壳幔过渡带较厚而东部较薄，反映两地不同的岩浆底侵作用程度。 - It's difficult to find xenolith in a sentence. 用xenolith造句挺难的
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