巖石圈之下是由部分熔融的橄欖巖所組成的軟流圈.Below the lithosphere is the rheosphere comprising partly fused peridotite.軟流圈,大體上相當(dāng)于低速帶.The asthenosphere corresponds approximately to the low - velocity zone.板緣造山主要表現(xiàn)為巖石圈和軟流圈以基本相同的運(yùn)動(dòng)趨勢(shì)的相對(duì)運(yùn)動(dòng).Magin...