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南极半岛至少从早-中侏罗世起就发育了火山弧,这与分裂前冈瓦纳超级大陆之下的太平洋底板的俯冲有关。弧的基底至少有25公里厚,其出露部分主要为晚古生代早期-三迭纪俯冲边缘有关的变形变质沉积岩和片麻岩。放射性资科表明;某些过去认为是基底的变形岩石是在晚白垩世增生的,因此上述简单模式就变得复杂了。现存的地层和岩相资料,虽然还需与冈瓦纳大陆的残余部分作地理上的对比,但已足以说明它们经历了一系列古地理的改造。南极半岛北部地球化学和同位素研究揭示了岩浆活动空间上向西迁移穿过陆壳边界进入大洋地幔,侵入活动时间可能向北变新。后者在某种程度上可能与沿半岛向北逐渐停止的俯冲有关.格雷厄姆地明显可分成两个主要构造部分,南部部分剥蚀的更深一些。需要进一步工作的问题是,帕默地可能的岩浆演化以及用一个统一的模式来评价整个南极半岛的区域隆起历史。
The Antarctic Peninsula developed volcanic arcs from at least Early-Middle Jurassic, related to the subduction of the Pacific Ocean floor below the Gondwanaland supercontinent before the division. The basement of the arc is at least 25 km thick and is mainly characterized by metamorphic metasediments and gneiss associated with the Triassic subduction margin in the late Paleozoic. Radioactive materials show that some of the deformed rocks that were previously thought to be basement proliferate in the Late Cretaceous, and thus the above simple model becomes complicated. The existing stratigraphic and lithofacies data, though geographically contrasted with the remnants of the Gondwanaland, are enough to show that they underwent a series of palaeogeographic transformations. Geochemical and isotopic studies in the northern Antarctic Peninsula reveal that the magmatic activity migrates westward across continental shelf into the oceanic mantle and the time of intrusive activity may change northward. The latter, to some extent, may be related to a subduction that gradually ceases northward along the peninsula, Graham well apparently divided into two major structural parts, and denuded southern parts to a deeper extent. The issues that require further work are the possible magmatic evolution in Palmer and the use of a unified model to evaluate the regional uplift history of the entire Antarctic Peninsula.