上地幔岩石是基性、超基性和某些其它成分岩浆的来源。岩浆熔体熔出并从上地幔区迁移到地壳,这是地球演化的相当长时期内才得以实现的过程。无疑,熔体从上地幔岩石中熔出和分离出来,不可能不影响到剩余残体的成分:地幔物质被熔出、分离出去愈多,则在岩浆熔体形成带进行的演变愈深刻。因此,研究上地幔岩随时间演化的情况,对于解决许多岩理学问题是特别重要的。用地球物理方法研究地球的深层,能确定地幔区的现时状态,但不能推测它过去的演化 Upper mantle rocks are the source of basic, ultramafic and some other magmatic components. The melting of the magma melts and migrates from the upper mantle to the crust, a process that was only achieved over a relatively long period of Earth’s evolution. Undoubtedly, the melting and separation of the melt from the upper mantle rocks can not affect the composition of the remaining remnants: the more the mantle material is melted out and the more it is separated, the more profound the evolution in the magma melt zone takes place. Therefore, studying the evolution of upper mantle rocks over time is of particular importance for solving many lithological problems. Using geophysical methods to study the deep layers of the earth can determine the current state of the mantle zone but can not infer its past evolution