The middle crust and the lower crust is in the ductile field.
上地壳表现为脆性变形，中、下地壳为韧性的流动变形。
In lower crust, faults often consist of a series of secondary fractures.
发育于地壳浅层中的脆性断层常常由一系列次级小断层所构成。
The primitive Pb was mainly derived from the lower crust and upper mantle;
矿床中的原 始铅主要来源于地壳深部或上地幔；
Thus it is indicated that they are the products of lower crust environment.
由此说明，是下地壳环境的产物。
The metallogenic source material comes from the upper mantle and the lower crust.
成矿物质来源于上地幔和下地壳。
The crust is multilayered and there exists a low velocity layer in the lower crust.
地壳由多层介质组成，在下地壳中存在着低速层。
It is postulated that a high conductive body exists in the lower crust or upper mantle.
据此推测在地壳下部或地幔上部存在一高导体。
The faulting might be attributed to the ascending lower crust-derived fluids after the Late Miocene epoch.
造成断裂分期活动的原因是藏东地区下地壳流体的存在。
The parent magma of several rock series formed earliest originated from the lower crust of granulite facies;
最初形成的岩系的母岩浆，起源于麻粒岩相的下地壳。
In general, the composition of lower crust is close to basalt and the composition of upper crust is similar to granite.
一般来说，下地壳的成分接近于玄武岩，而上地壳的物质成分与花岗岩相似。
The volcanic rocks resulted from upper mantle in Mesozoic group, and volcanic rocks from lower crust in Palapene system.
本区火山岩应主要来自上地幔，而房身泡组源区相对较浅，可能有下地壳物质混人。
The intrusive is believed to be syntectic type with its diagenetie materials derived from the lower crust and upper mantle.
认为该岩体为下地壳或上地幔源，属同熔型。
The results in this study reconfirmed that the lower crust fluid played an important role in the mineralization of Daping mine.
本文的研究成果再次证实了下地壳流体对大坪金矿成矿的贡献。
The deeply studies show the GD intrusions was mixed by magmas from mantle and from lower crust, without the effect of subduction system.
综合地球化学证据表明岩浆起源不受古俯冲体系的影响，而是幔源岩浆与榴辉岩相镁铁质岩石部分熔融岩浆混和的产物。
The amphibolite xenoliths were from the upper part of lower crust and the lower part of middle crust, bring up to the shallow area of crust .
角闪岩包体来源于下地壳上部-中地壳下部位置，被上升岩浆带至地壳浅部。
This paper deals with some results of experimental study on semi-brittle behavior of rocks at the conditions relevant to the middle-lower crust.
本文着重介绍了在中下地壳温度、压力条件下进行的几种岩石半脆性蠕变的实验研究结果。
The Chishui EW strike structure within basement extends eastward to Lianyuan in Hunan province, which extends probably down to middle-lower crust.
贵州赤水东西向构造在基底内向东延伸至涟源地区，这种特征可能延深至中下地壳；
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。
Under the influences of mantle and lower crust, the low-velocity layers alternating with high conductive layers distribution occurred in middle crust.
地幔物质的上隆及上侵作用使上地壳裂解断陷，而中地壳在地幔、下地壳的影响下形成相间展布的低速—高导层。
The data mentioned above lead to suggest that the granulites are the representatives of middle to lower crust formed round about late Proterozoic era.
上述资料表明本区的麻粒岩是形成于晚元古代前后的中下地壳产物。
By using 3-d gravity forward calculation, we obtained the deep gravity anomalies of Tai-wan from its Bouguer anomaly. Its depth corresponds to the lower crust.
经过三维重力正演计算，我们从台湾的布格重力异常中求得了深部重力异常，其深度相当于地壳下层。
It is a porphyry copper-silver-tin deposit that occurs in the transitional crust and was formed by derivatives of the lower crustal-upper mantle transitional magma.
它是分布于过渡性地壳上的、由起源于下地壳—上地幔的过渡性岩浆的衍生物形成的斑岩型铜银锡矿床。
The measurements of the elastic wave velocity of lower crustal rocks may provide valuable information on the composition and physical properties of the lower crust.
下地壳岩石的波速测定可以提供有关下地壳物质组成及物理性质的重要信息。
The metallogenic mechanism is as follows: in the latest Jurassic, the melting layers of granite magma in the lower crust were formed by the regional plate movement.
成矿机理是：区域板块运动使本区在侏罗纪末下地壳形成花岗岩浆熔融层。
The lithochemistry, REE and isotope characteristic of strontium, oxygen and lead of Laowan granite show that the granite originates from lower crust by partial melting.
老湾花岗岩的岩石化学、稀土元素和同位素特征指示出老湾花岗岩源于下地壳经部分熔融作用形成。
The horizontal low velocity layer, the vertical low velocity zone and the high velocity layer in the basement of the lower crust are related to the ore_forming processes.
文中还探讨了中国大陆主要成矿域岩石圈的现今活动性，以及地壳厚度、壳内低速层、“墙式”地震剪切波垂向低速带和下地壳底部高速层（体）的分布特征以及与成矿作用的关系。
The weighed average composition of xenoliths shows a more mafic composition of the lower crust than that estimated from granulite data, which may imply the difference in the genesis.
捕虏体的加权平均值比基于麻粒岩地体资料估算的下地壳平均组成偏基性，揭示了二者可能的成因差异。
The source area of K-rich magmatic rocks in the Dabie area is closely related to the enriched mantle, while the rocks in the lower Yangtze Valley area are more affined to the lower crust.
大别地区富k岩系的源区与富集地幔密切相关，下扬子地区的则与下地壳有更多亲缘关系。
The volcanic activities have relations to the heat-flow upwelling, crust thinning, upper mantle and lower crust melting, and upward movement of the melt materials along the block boundaries.
火山活动与热流上涌、地壳拉伸减薄、上地幔及下地壳物质熔融并沿块体边界向浅部上移有关。
The lithosphere beneath this area is associated with high temperature, low strength and intensive rheological stratification, and the lower crust is characterized by ductile flow deformation.
岩石圈具有温度高、强度低和强烈流变分层等特征，且下地壳表现为韧性流动变形。
应用推荐