摘要
本文通过对湖北大洪山地区金伯利岩管中新发现的石榴石二辉橄榄岩包体岩石学、岩石化学、矿物化学、地球化学的研究表明,古生代时大洪山地区的上地幔是交代地幔,主元素有十分微弱的亏损;通过地质温、压计算表明,该区金伯利岩岩浆来源深度大于120km。
The petrological, petrochemical, mineralchemical, and geochemical study of the garnet lher-zolite xenolith newly discoveried in kimberlite pipe in Dahongshan area, Hubei Province illustrates that the upper mantle of the Dahongshan area in Palaeozoic is the metasomatic mantle whose major elements have been weakly depleted. The p-T calculation shows that the depth of magma source is more than 120 kilometers.
出处
《地质科技情报》
CAS
CSCD
北大核心
1991年第S1期109-116,141-108,共10页
Geological Science and Technology Information
