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地中海海盆的构造受一系列地幔隆起的控制。在这些地幔隆起的顶部,随着地壳块体(Crustal blocks)的旋转,坍陷和大洋化同时发生。由于旋转的结果,形成了如阿尔杰罗—普罗文卡尔和第勒尼安海盆那样的楔形断陷。这就是形成高钾“地中海”型岩浆活动的构造环境。在更新世,第勒尼安地区和意大利半岛形成了两个火山岛弧。一个位于亚平宁沿海山脉,长约450km,是钾质岩浆作用.另一个位于第勒尼安海盆东南坡,先是钙碱性火山活动,接着是含钾越来越高的“地中海”型岩浆作用。钙碱性火山作用的延续时间很短,它喷发时的位置就是早先喷发拉斑玄武质板块内火山作用的火山机构位置.用壳下的构造作用可以解释这种独特的火山作用模式. 富含不相容元素的幔源流体交代活动增强了地幔的上隆。流体的补充不仅仅发生在上地幔,也同样发生在地壳中.在地幔的部份熔融体中和储存在浅部岩浆房中的熔浆中,已经鉴定出这些分离的组份,并作了评价.幔源流体的组分与图斯卡尼—拉蒂地区地幔穹丘顶部形成巨大成矿省的流体组分相同.
The structure of the Mediterranean basin is controlled by a series of mantle uplift. At the top of these mantle uplifts, collapse and oceanification occur simultaneously with the rotation of crustal blocks. As a result of the rotation, wedge-shaped faults such as the Arriel-Provencal and Tyrrhenian basins were formed. This is the tectonic setting for the formation of high-K “Mediterranean” magmatic activity. During the Pleistocene, two volcanic island arcs formed in Tyrrhenian and the Italian peninsula. One is located in the coastal zone of the Apennine, about 450km long, which is a potash magmatic activity and the other is located on the southeast slope of the Tyrrhenian Sea basin, first with calc-alkaline volcanism and then with increasingly higher potassium “Mediterranean” type magmas effect. The caustic-alkaline volcanism has a very short duration, and its eruption is the volcanic location of the earlier volcanism within the basalt platelet. This unique volcanic mode of action can be explained by the tectonism of the shell. Incompatible elements of the mantle source fluid aggravate the mantle uplift. Fluid replenishment occurs not only in the upper mantle but also in the earth’s crust, and the isolated components have been identified in part of the melt in the mantle and in the magma stored in shallow magma chambers The composition of the mantle source fluid is the same as the fluid composition of the huge metallogenic province at the top of the mantle dome in the Tuscani-Lati region.