华北地台古生代金伯利岩（包括金刚石）中流体及其在地幔演化中的作用

FLUIDS AND THEIR ROLES ON THE MANTLE EVOLUTION FROM THE PALAEOZOIC KIMBERLITES AND DIAMONDS IN NORTH CHINA PLATFORM

流体是固体地球活动的枢纽。本文从金伯利岩及幔源捕虏体（包括橄榄岩、辉石岩、榴辉岩）的岩相学，金伯利岩中的元素互化物和自然元素，金刚石中的流体包裹体等方面，讨论了地幔流体的存在与来源。流体来自地幔演化，又作用于地幔演化。幔内存在与流体活动有关的薄弱带，它具有热、力、化学及流体耦合作用的特点，ＣＴ剖面资料显示岩石圈的减薄与软流圈上涌，并沿幔内薄弱带的拆沉作用有关。

Fluids is the active centre(axis) of solid earth The existence and source of mantle fiuids were discussed in this paper, based on the petrography of kimberlite and their xenoliths(iccluding peridotite, eclogite and pyroxenolite), the natural elements and their interchanging substances, and the fluid inclusions in diamonds. The mantle fluids originate from the mantle evdution, and react on the mantle evolution also,The weak zones were existence in the mantle.which are of the interacting character of heat, chemistry, mechanics and fluid. The CT data shows that the lithospheric thining has something do with asthenospheric upwelling and lithospheric delamination along with the weak zones in the mantle.