Meaning
地幔 refers to the mantle, the thick layer of hot, dense rock between Earth's crust and core. It comprises the majority of Earth's volume and plays a crucial role in plate tectonics and volcanic activity. This is a scientific geological term used primarily in academic and educational contexts.
Usage
This is a technical term used in geology, earth science textbooks, and scientific discussions. It's not part of everyday conversation unless discussing geology or planetary science. Native speakers typically encounter this word in school science classes or documentaries about Earth's structure.
Examples
- 01地幔占地球体积的百分之八十以上。.The mantle accounts for more than 80 percent of Earth's volume.
- 02地幔中的热对流驱动着板块运动。.Thermal convection in the mantle drives plate movement.
Characters
Measure words
- 层一层地幔
Common collocations
- 上地幔upper mantle
- 下地幔lower mantle
- 地幔对流mantle convection
- 地幔物质mantle material
Origin
The term combines 地 (earth) with 幔 (curtain/covering), metaphorically describing the mantle as a 'curtain' or 'covering' layer surrounding Earth's core. The character 幔 suggests something that drapes or covers, which aptly describes the mantle's position between the crust and core.