【摘要】 对山东中生代金伯利岩和伴生煌斑岩进行了对比研究。纠正了过去伴生煌斑岩基质“以斜长石为主”的结论并重新命名。伴生煌斑岩可以分为二种类型:碳酸岩型煌斑岩和碱性岩型煌斑岩.前者与金伯利岩关系密切,但在形成时间、产出部位、矿物学和生成条件上与中生代金伯利岩有明显不同。建立在岩石化学和地球化学渐变过渡基础上的“同源分异”观点有不可忽略的弱点。本文提出地台不同部位下的上地幔橄榄岩在不同条件下部分熔融分别形成中生代金伯利岩和伴生煌斑岩的观点.更多还原

【Abstract】 In this paper, the Mesozoic kimberlite and associated lamprophyre are studied comparatively. A conclusion that plagioclase is the dominant mineral in the groundmass of associated lamprophyre is corrected. Some associated lamprophyres are renamed. The lamprophyre associated with Mesozoic kimberlite in ShanDong can be classified into two types. One is carbonate lamprophyre. The other is alksline roch-lamprophyre. Carbonate lam-propyyre is more closely related to kimberlite. But their age and setting of intrusior, minerology and melting condition are significantly different. The view of " cognate fractionate" which based on the similarities of petrology and geochemistry between Mesozoic Kimberlite and associated lamprophyre has some weaknesses which should not be ignored. A new view is proposed by this paper. Kimberlite and the associated lamprophyre are the results of partail melting of upper mantle Iherzolite (maybe different type) beneath different settings of Luxi craton and at different tempereture, pressure, oxygen fugacity and original fluid phase.更多还原