The accumulated geophysical data for the Gulf of Mexico, combined with the known geology, make a number of maps possible which serve to define the modern geosyncline and provide some evidence as to its inception. The velocities and depths of interfaces observed in seismic reflection and refraction...
The earth's crust and mantle 来自 bajalibros.com 喜欢 0 阅读量: 23 作者: FAV Meinesz 摘要: The Earth's Crust and Mantle presents the deformations of the Earth's crust, which are attributed to mantle currents. This book explores the gravity observations, which give indications about the ...
The boundary between the Earth's crust and mantle is called _. A. Moho discontinuity B. Gutenberg discontinuity C. Lehmann discontinuity D. Conrad discontinuity 相关知识点: 试题来源: 解析 A。解析:地壳和地幔之间的边界被称为莫霍面(Moho discontinuity)。古登堡面(Gutenberg discontinuity)是地幔和外核...
Earth - Core, Mantle, Crust: More than 90 percent of Earth’s mass is composed of iron, oxygen, silicon, and magnesium, elements that can form the crystalline minerals known as silicates. Nevertheless, in chemical and mineralogical composition, as in phy
A mantle is a word for something that blankets over something else, like the loose cloak worn by Little Red Riding Hood or the layer of earth between the crust and core.地幔是指覆盖在其他东西上的东西,比如小红帽穿的宽松斗篷或地壳和地核之间的地球层。
Earth - Core, Crust, Mantle: Earth’s outermost, rigid, rocky layer is called the crust. It is composed of low-density, easily melted rocks; the continental crust is predominantly granitic rock (see granite), while composition of the oceanic crust corres
Fig. 1.Sketch of a cross section through the Earth's interior showing the different layers. The temperature (yellow) in Celsius (°C) shows a sudden increase between the lowermost mantle and outer core. The p-wave velocity shows a sudden decrease at the core-mantle boundary reflecting a str...
A. It is as thin as the crust B. It is completely solid and has no movement C. It can flow slowly over a long period of time D. It has the same composition as the crust 相关知识点: 试题来源: 解析 C。解析:地幔在长时间内能够缓慢流动,这也是板块运动的动力来源之一。选项A,地幔比地壳...
A division of the three main structural elements of the earth, viz., crust, mantle and core, into zones is mainly based on seismological data. Most geophysicists today strongly support the hypothesis of a crust consisting of three layers (sediment, "granite" and "basalt"). In addition, vario...
Learn about the three layers of the Earth: the crust, mantle, and core. Discover what scientific principle causes the different layers of the Earth...