some low-density bodies widely exist in the middle crust of the center of the basin, and in the upper crust above the uplifted portion of the upper mantle.

位于盆地中部的中、下地壳分别发育大范围的壳内低密度体，并处于上地幔隆起的背景之上；

the obs has recorded moho and other seismic waves, the sedimentary layer, the upper crust layer and the lower crust layer can be identified from it.

obs记录到了包括莫霍面在内的地震波，可以识别地壳内沉积层、上地壳层、下地壳层等多个层位的折射波地震相。

in the songliao basin there occurred pre-rift volcanic rocks. then brittle extension of the upper crust gave rise to a semi-graben rift basin.

松辽盆地存在裂谷期前火山巖，之后上地壳脆性伸展发育半地堑裂谷盆地。

seismic surveys show that many reflectors, such as dipping reflectors and arch reflectors, occur in the upper crust of the drilling area.

地震调查表明，在超高压变质巖出露区上地壳充满了反射体，包括倾斜反射体与上拱的反射弧。

the compression stress field of the upper crust in songliao basin is different from place to place especially from north to south of the area.

松辽盆地整个上部地壳所受到的挤压应力场在南北两大地区存在空间差别。

it is reflected clearly in the velocity image of the upper crust that the distribution of all kinds of rock elements corresponds to that of rocks with different nature in this area.

地壳上部的速度图像清楚地反映了不同巖石单元的分布与该区不同性质的基巖分布基本吻合；

yet beneath the upper crust of french international companies french business is inward-looking and timid.

然而，褪去法国一流国际公司浮华面纱的掩盖，我们所看到的是法国商业的保守和懦弱。

the radiogenic heat production rate in the upper crust decreased with the increasing depth. however, they were distributed uniformly within the depth scale of sedimentary basin.

巖石生热率在上地壳的分布是随深度的增加而减小的，但在沉积盆地的深度范围内几乎不变，其分布是均匀的，仅不同巖性的生热率差别较大。

from analysis, it is concluded that the upper part of the upper crust is brittle and the lower part is tenacity and deformed with the development of a shear zone.

分析认为，上地壳上部呈现脆性，下部为脆韧性过渡状态，主要发育有板状断层或犁式断层；

the pb isotopic composition of ore sulfides is stable and the ore lead is ordinary common lead. ore lead derived from magma, which came from partial melting of the upper crust in early cretaceous.

矿石铅同位素组成稳定，为正常普通铅，矿石铅来源于早白垩世上地壳物质部分熔融形成的巖浆。

the upper crust is mainly composed of slates, phyllites, schists, granulite of greenschist facies (partly low-amphibolite facies) and granite intrusions, and sedimentary rocks at the top.

上地壳主要为绿片巖相（部分低角闪巖相）的板巖、千枚巖、片巖、变粒巖以及花岗巖组成，顶部为沉积盖层。

the tektite was formed from the upper crust rocks by impact melting.

玻璃陨石是地壳巖石受撞击熔融形成的。

this chapter is the upper crust of the book.

这一章是全书的精华。

the evolution of a half graben basin bounded by normal faulting in the upper crust with a byerlee-type strength envelope has been modelled by elastoplastic finite element analysis.

利用新近完成的粘弹塑构造模拟软件包对盆地的动力学演化进行了一系列模拟。