Tectonothermal Evolution of the Southern Iberian Massif: 40 AR/39 AR Age Controls on Terrane Accretion

伊比利亚地块构成了西南部最大的 阿莫里卡板块的一部分，似乎已经分离 早古生代来自北美、波罗的海和冈瓦纳， 但在晚古生代参与了相当大的造山作用 时间 多种板块构造模式和大陆构造模式 已经提出了重建，但是关键的知识 阿莫里西板块阻碍了对 这些盘子。 西班牙人最近进行的详细测绘 地质调查（IGME）为这项研究提供了基础， 包括矿物和全岩40 Ar/39 Ar的系统测定 五个主要地区代表性区域内的千枚岩年龄 构成伊比利亚半岛南部的岩石构造单元 山 这些关于该地区构造演化的数据将 允许对对比板块构造进行更严格的分析 模型和援助的定义内的异国情调的伊比利亚。

The Iberian Massif constitutes the southwestern most and largest fragment of the Amorican Plate, which appears to have been separated from North America, Baltica and Gondwana during the early Paleozoic, but was involved in considerable orogenesis during later Paleozoic time. A variety of plate tectonic models and continental reconstructions have been proposed, however knowledge of the critical Amorican plate has prevented resolution of the tectonic history of these plates. Recent detailed mapping carried out by the Spanish Geologic Survey (IGME) provides the basis for this research which involves systematic determination of 40 Ar/39 Ar mineral and whole-rock phyllite ages within representative areas of the five major lithotectonic elements which comprise southern portions of the Iberian Massif. These data on the tectonothermal evolution of this area would permit a more critical analysis of the contrasting plate tectonic models and aid in definition of exotic terranes within southern Iberia.