二辉辉石岩
- 网络websterite
二辉辉石岩-
二辉辉石岩包体来自较冷的岩石圈，而二辉橄榄岩来自岩石圈与软流圈的过渡带，并且表明后者的地温梯度以对流热地温梯度为主。
It may be suggested that websterite xenoliths came from cooler lithosphere and lherzolite ones from the depth near to lithosphere asthenosphere boundary , and the latter is also indicating a smaller geotherm gradient that is nearly close to typical advective geotherm gradient .