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xenolith造句

"xenolith"是什么意思  
造句与例句手机版
  • Xenoliths are found at numerous horizons, and locally there is evidence of scour and other erosional features .
    捕虏体可见于许多层位,并局部可见到冲刷和其他侵蚀特征。
  • Significances of deep - seated xenolith in cretaceous basalt of inner mongolia
    内蒙古四子王旗早白垩世深源捕虏体的发现及意义
  • Lattice preffered orientation and seismic anisotropy of ultramafic xenoliths in damaping , hebei province
    河北大麻坪超基性岩包体的岩石组构和地震波速各向异性
  • A suit of highly potassic basalt bearing deep - source xenoliths has been discovered recently in the siziwangqi area , inner mongolia
    内蒙古四子王旗地区发现含有深源捕虏体的富钾玄武岩。
  • Significances of deep - seated xenolith in cretaceous basalt of inner mongolia significances of deep - seated xenolith in cretaceous basalt of inner mongolia
    内蒙古四子王旗早白垩世深源捕虏体的发现及意义
  • The xenoliths in the yangyuan , including iherzolite and harzburgite , represent the direct samples from the upper mantle beneath western north china craton
    阳原幔源包体包括二辉橄榄岩和方辉橄榄岩,是华北西部上地幔的直接样品。
  • The lpo of main minerals of ultramafic xenoliths including spinel lherzolite , spinel harzburgite and plagioclasebearing websterite which collected from damaping , hebei province is analyzed and the seismic velocities of the rocks in
    结果表明: 1大麻坪包体中橄榄石与斜方辉石的lpo方位关系与通常所见的100
  • A great number of lherzolite xenoliths occurs within the volcanic clastics characterized by terrigenous central type eruption at tianyang , jiudouyang and yingfenglin of qingtongyang , of southern leizhou peninsula
    摘要雷州半岛南部田洋、九斗洋及青桐洋的英峰岭等陆相中心式喷发的火山碎屑岩中,分布有大量的二辉橄榄岩包体。
  • Siziwangqi of inner mongolia is located on the north margin of north china craton , the junction of north china craton and siberia . granulite xenoliths are found there in cretaceous basalt . these xenoliths are mainly plagioclase - pyroxenite
    内蒙古四子王旗地区地处华北板块北缘,与西伯利亚板块的接合部,其早白垩世橄榄玄武岩中发现大量下地壳麻粒岩捕虏体,并可见辉石长石捕虏晶。
  • The early tertiary alkali basalts from yangyuan which contain abundant mantle xenoliths exhibit very homogeneous sr - nd isotopes with snd = 5 . 5 . their pb isotopes are similar to those of the depleted mantle ( dm ) and their trace element characteristics resemble those of oceanic island basalts ( oib )
    含幔源包体的阳原早第三纪碱性玄武岩具有均一的sr - nd同位素组成( nd 5 . 5 ) ,其pb同位素组成与亏损地幔( dm )相似。
  • Through the ree charactheristics being studied , it suggests that the xenoliths from hannuoba , ximeng , and puning area have no the trend of lree enrichment , which ratios of lree / hree approximate 1 . therefore , , it is not different from archean lithospheric mantle
    稀土元素地球化学研究表明,汉诺坝、锡盟、普宁等地区包体则无lree富集的趋势, lree hree接近于1 ,因此它们与太古代岩石圈地幔不同,稀土元素特征表明它们遭受了强烈亏损。
  • Based on the petrological , petrochemical and geochemical analyses about these rocks , it is concluded in this paper that the xenoliths were originated from the upper mantle , and comprised of both primitive pyrolite and the infusible solid residual of the upper pyrolite while the basaltic magma was melted out of it , which were brought up to the earth ' s surface via o1carnc eruption
    根据其岩石学、岩石化学及地球化学特征分析,包体来源于上地幔,其成因既有原始地幔岩,亦有上地幔岩经部分熔融出玄武岩浆后的难熔固相残留物,被火山喷发携带至地表。
  • 4 . three type of basalt is recognized in changle region : a , sapphire - embodied alkli - olivine - basalt of niushan group ( most distributed in fangshan ) , enriched with a large number of mantle - orignated xenoliths with different extent of weathering ; b , alkli - olivine - basalt of niushan group with little sapphire embodied , but contan a few mantle - orignated xenoliths usually samller than that of fangshan , most of the mantle - orignated xenoliths weathered seriously only lefting with some vacant caves , this kind of rock mostly lies in cangshan , taohuashan . and qiaoguan volcanic vent , contain amount of ilmenite ; c , olivine - basalt of yaoshan group , contain neither xenoliths nor sapphire
    4 、在昌乐地区区分出三类主要的玄武岩: a ,牛山组含矿的碱性橄榄玄武岩,位于方山,含大量的大小不一的风化蚀变程度不同的地幔岩包体; b ,牛山组几乎不含矿的碱性橄榄玄武岩,含少量地幔岩包体,且包体一般比方山小,多数已经遭严重风化而只留下空洞,含有相当数量的钛铁矿,主要位于北岩南部的苍山,桃花山及乔官火山口。
  • Directions are obtained by two means : calculation and measure . our investigations are summed as follows : 1 the lpo relations between olivine and orthopyroxene are different from usually situations : 100ol 001opx , 010ol 100opx , 001ol 010opx ; 2 the seismic anisotropy of the ultramafic rocks in damaping is obvious . their characters are consistent with the structures of the rocks and fabrics of minerals , which means seismic anisotropy is mainly controlled by rocks fabrics ; 3 seismic velocities suggest that the composition of upper mantle in damaping region is resemble to the xenoliths , which major component is lherzolite
    不同2大麻坪地区幔源包体的波速各向异性显著,岩石的波速各向异性特征与其宏观构造和微观组构一致,说明岩石组构是造成地震波速各向异性的决定因素3由地震波速推测的大麻坪地区的上地幔成分与包体出露的情况一致,即主体为二辉橄榄岩。
  • According to the sr - nd isotopic characteristics of peridotite xenoliths and their host basalts , it indicates that xenoliths in hannuoba , puning area may represent source area of the host basalt because of the xenoliths and host rocks being in the same plot ; however , the xenoliths is not directly related to their host rocks of the others area for the xenoliths plot out of the range of their host basaltic rocks . thermal dynamics calculation shows that the peridotite xenoliths are formed in the condition of pressure of 9 . 45 - 25kb and temperature of 945 - 1281
    橄榄岩包体及其寄主玄武岩的sr - nd同位素研究表明,汉诺坝与普宁地区部分包体样品投点落在其寄主玄武岩nd和sr同位素的分布范围内,表明橄榄岩包体代表了寄主玄武岩的源区,而其它大部分地区的包体其寄主玄武岩范围之外,表明寄主玄武岩和橄榄岩包体无成因联系,橄榄岩包体只是偶然包体。
  • 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。
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