oceanic mantle

According to the physical differences-oceans are low while continents are high ocean crusts are the in and flat while continents ones are thick and curved, it has been deduced the basic trend of ocean sinking and continent raising-the sinking and shrinkage speed of suboceanic mantle cone is higher than that of subcontinental mantle cone.

根据洋壳薄而平、陆壳厚而曲的物理差别 ,可以导出洋幔锥下沉收缩速度高于陆幔锥———洋降陆升的基本趋势。

Its various textures indicate important implication for the spreading of oceanic upper mantle and mineralization.

豆荚状铬铁矿是蛇绿岩套地幔构造岩中特征的矿产,其矿石发育丰富的岩浆活动-高温变形结构构造类型,豆荚状铬铁矿高温下仍具有稳定的物理化学特性,对认识大洋上地幔扩张、横向运移具有重要指示意义。