中生代苏—鲁活动大陆边缘榴辉岩、煌斑岩、金矿及富集地幔间的成因联系

海西期末形成的初始欧亚板块，从三叠纪（250Ma)开始，便与古太平洋板块－太平洋板块发生强烈的挤压碰撞作用和俯冲作用，及由此引起的远距离效应使中国广大的东部地区从中生代开始成为活动大陆边缘，俯冲作用及构造环境的演化是控制胶东地体等大多数中生代榴0辉岩等变质岩类，花岗岩类，火山岩类，煌斑岩类以及金等矿床形成和使它们出露地表的重要因素，胶东地体中富钾的钙－碱性煌斑岩类的特征与其它活动大陆边缘和造山带中金矿有关的煌斑岩很相似，例如呈脉状产出，晚期侵位，强烈的自变质，富含大离子亲石元素（LILE）和挥发分，高的金含量，高的LREE／HREE和^87Sr/^86Sr比值，低的^143Nd/^144Nd比值，与花岗岩类，橄榄安粗岩，酸性脉岩以及热液金矿床的密切共生及它们这间与富集地幔楔的成因联系等，这些都表明它们与板块或板片俯冲过程中的去气，去碱，去ILE作用或壳－幔物质交换作用及由此形成的富集地幔楔有着紧密的联系。

Genetic relationship between eclogite, lamprophyre, gold deposit and enriched mantle of Su-Lu active continental

The Initial Eurasia plate and Paleopacific plate started to converge intensely at the end of Hercynian or beginning of the Triassic (250Ma). The subduction, its evolution and long distant effect are the foundamental factors controlling the formation and evolution of the most granitoids, volcanics, lamprophyres and gold deposits in Jiaodong terrane. The characteristics of lamprophyres in Jiaodong terrane are similar to lamprophyres related to gold deposits in other active continental margin or orogenic belts. Such as dyke occurrence, late stage emplacement, intensive autometasomatism, enrichment in large ion lithophile element(LILE) and volatiles, higher content of gold, high ratios of LREE/HREE and 87 Sr/ 86 Sr , low 143 Nd/ 144 Nd ratios, complementarity in many main and trace elements with eclogites, and intimate association with granotoids and shoshonite volcanics, other mafic rocks, felsic dyke and hydrothermal gold deposits. All these features could be related to the enriched mantle wedge and explained by mantle crust material exchange due to degassification, dealkalization, desilicification and remobilization of LILE during subduction of slab. The subduction and its evolution are the foundamental factors controlling the formation and evolution of most granitoids, volcanics, lamprophyres and gold deposits in Jiaodong terrane. All these features could be related to the enriched manntle wedge and explained by mantle crust material exchange during subduction of slab in active continental margin.