continental crust
[地质] 大陆地壳
2026-01-09 19:40 浏览次数 10
[地质] 大陆地壳
the continental lower crust大陆下地壳
continental lower crust大陆下地壳
continental U crust大陆地壳
the continental crust is much thicker than average beneath the great mountain belts .
在高山地带下面的大陆地壳,其厚度要比平均厚度大得多。
it is important to understand subduction because this is where the continental crust grew progressively with time.
因为大陆壳日益增长,所以了解俯沖带是非常重要的。
a huge thermal dome structure was firstly formed in continental crust due to rising of hot mantle plume during the early permian, and graben and fault basin were further formed.
早二叠世时,由于热地幔柱上升活动,引起在大陆壳区首先形成巨大的热穹窿构造,再进一步发展演化,形成地堑和断陷盆地。
hpm-uhpm registers the low thermal gradients and deep subduction of continental crust during the early stage of the collision process in phanerozoic subduction-to-collision orogens.
uhpm记录了显生宙俯沖-碰撞造山带早期碰撞过程中的低热流梯度及陆壳的深俯沖作用。
the results indicate that the continental crust and upper mantle exhibit significant differences in reflection characteristics, which are related to tectonic units and regions.
研究成果表明,大陆地壳和上地幔的反射特征具有显着的差异,这些差异反映了不同的构造单元和状态。
alashan-dunhuang land block is a rigid one that has been formed the continental crust at precambrian.
阿拉善—敦煌陆块是前寒武就已经形成陆壳的刚性块体。
an important and distinctive feature of continental crust especially orogenic belt is that there are widely distributed granitoid rocks which are regarded as the index formation of crustal evolution.
大陆地壳尤其是造山带的一个重要的标志性特征就是广泛分布有花岗巖类巖石,花岗巖又被称作为地球发展历史中地壳演化的标準建造。
there are 3 major deformations caused by continental crust splits, laying the material foundations for hydrocarbon generation in cenozoic different periods in the basin.
东海新生代盆地经历了3次重大的陆壳裂离改造及演化,从而奠定了新生代不同时期成油气的物质基础。
based on the data from geographical, geological, geophysical and geochemical survey in xinjiang region, northwestern china, the model of the continental crust in this region is studied in detail.
根据新疆地区的地理学、地质学、地球物理学和地球化学调查资料,详细研究了新疆地区的大陆地壳模型。
the parental magma for pyroxenite xenoliths could be derived from the partial melting of the asthenosphere with continental crust material involvement and of the upper lithospheric mantle.
辉石巖类捕虏体母巖浆来自于含有陆壳物质的软流圈及其上部巖石圈地幔的部分熔融。
continental crust averages some 25 miles (40 kilometers) thick, although it can be thinner or thicker in some areas. oceanic crust is usually only about 5 miles (8 kilometers) thick.
大陆地壳平均厚度25英里(40公里),虽然在某些区域会稍厚或稍薄。
on this basis, the paper points out that the calc-alkaline magmatic rock is the product formed by contamination of mantle derived magma with continental crust consolidated 1600m.
在此基础上提出; 本区钙堿性巖浆巖系由地慢巖浆与1600百万年前固结的大陆地壳混熔作用形成的巖浆产物。
this paper discusses the structural characteristics of 「block-zone mosaicking and multi-layer superimposition」 of the continental crust of china and its multi-stage tectonic evolution.
初步探讨了中国大陆地壳「块带镶嵌多层叠覆」的结构特征和多阶段的构造演化过程。
a stable area of continental crust that has not undergone much plate tectonic or orogenic activity for a long period.
大陆地壳长时期内未受到板块构造的或造山活动的很多影响的稳定区。
evolution of the continental crust is closely related to partial melting.
地壳分异演化与熔融作用密切相关。
the most ancient parts of the continental crust are 4000 million years old.
大陆地壳最古老的部分有40亿年历史。
during indo-china movement period, after the subduction of the ocean crust of the yangtze plate stopped, its continental crust continuously subducted towards the north china plate strongly.
印支运动时期,扬子板块洋壳俯沖完毕后,其陆壳继续强烈向华北板块俯沖。