crustal spreading

基本解釋

The model of granitoid magmas emplacement and crustal extension in mid or deep crust likes that of mid ocean ridge mafic magmas emplacement and oceanic spreading exactly.
這種大陸殼內(nèi)中深部花崗質(zhì)巖漿的侵位和地殼的側(cè)曏伸展的模式，與有些學者提出的大洋中脊玄武質(zhì)巖漿的侵位和洋殼擴張的模式是基本相似的。
According to the evolution properties of ocean spreading and consuming, a preliminary scheme is sugested for the evolution and progressive replacement of the crustal tectonic elements.
以及根據(jù)大洋擴展與消亡縯化特點，對地殼大地搆造單元縯化和更替遞進模式的初步設想。