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华北与朝鲜半岛山水相连,传统上称为中朝克拉通或中朝地块。但是中朝的地质对比研究并不深入。作者所在的研究组有幸同时与南北朝鲜半岛双方展开了合作研究达十年以上,内容涉及到前寒武纪基底、古生代沉积盆地、造山带演化、以及中生代岩浆活动。本文是对我们最新研究成果的一个简要总结,并提出一些仍未解决的或具争议的相关地质问题,希望以此能推动中朝地质和东北亚地质的研究。研究结果总结如下:(1)朝鲜半岛可划分为三个陆块,从北到南分别为狼林、京畿和岭南陆块,分别被临津江和沃川构造带分割;(2)三个陆块的前寒武纪基底虽有差别,但本文认为它们是相似的,并可与华北克拉通基底对比;(3)狼林地块的平南古生代盆地以及位于京畿陆块和岭南陆块之间的太白山古生代盆地与华北古生代盆地可对比;(4)临津江和沃川构造带的演化还有待深入研究,它们并不具有陆陆碰撞造山带的特征;(5)在京畿陆块西南部发现了含榴辉岩的三叠纪变质杂岩(洪城杂岩),其变质时代和岩石组合都可以和苏鲁造山带对比,不含超高压变质矿物。这表明苏鲁造山带东延到朝鲜半岛,并在半岛的京畿陆块西南缘登陆。但是洪城杂岩出露有限,没有穿越切割半岛的证据,因此可能沿半岛西部断裂局部分布或在半岛西缘尖灭,其空间分布需进一步研究;(6)中生代岩浆岩在朝鲜半岛广泛存在,三叠纪岩浆作用可能与印支期造山作用有关;侏罗纪和白垩纪的岩浆岩分布与华北在时代和空间分布上有所差别,晚白垩世岩浆岩在朝鲜半岛集中出露于庆尚盆地。本文还在最后一部分,提出了朝鲜半岛以及中朝对比研究中有争议的和尚需进一步研究的关键问题。
North China and the Korean Peninsula landscape connected, traditionally called the Craton or China and North Korea plots. However, the geological contrast between China and North Korea did not go deep. The author’s group was fortunate to have conducted cooperative research with both North and South Korea on both sides for more than a decade, covering the Precambrian basement, the Paleozoic sedimentary basin, the evolution of the orogenic belt and Mesozoic magmatism. This article is a brief summary of our latest research results and proposes some still unsolved or controversial geological issues in the hope of promoting the geo-geology of Northeast Asia and the study of geology in Northeast Asia. The results of the study are summarized as follows: (1) The Korean Peninsula can be divided into three land blocks, namely, Wolflin, Gyeonggi and Lingnan land blocks from north to south, respectively divided by the Imjin River and the Woochuan structural belt; (2) Although the Precambrian basalts of the blocks are different, this article considers them to be similar and can be compared with the North China craton basement; (3) the Pingnan Paleozoic basin of the Wolfram block and the Paleozoic basins in the Gyeonggi and Luonan terraces (4) The evolution of the Imjin and Woochuan tectonic belts remains to be further studied, and they do not have the characteristics of continental-continental collision orogen; (5) In the southwestern part of the Gyeonggi Land The Triassic metamorphic complex (Hongcheng complex) containing eclogites was discovered. Its metamorphic age and rock assemblages can be contrasted with the Sulu orogenic belt and do not contain ultrahigh-pressure metamorphic minerals. This indicates that the Sulu orogen extends eastward to the Korean peninsula and lands on the southwestern margin of the Gyeonggi Landmass on the peninsula. However, due to the limited exposure of the Hongcheng complex to the peninsula, there is no evidence of crossing the peninsula. Therefore, it may be distributed locally along the western margin of the peninsula or extinct at the western margin of the peninsula. (6) Mesozoic magmatic rocks are widespread in the Korean peninsula, The Triassic magmatism may be related to the Indosinian orogeny. The Jurassic and Cretaceous magmatic rocks are different from North China in time and space distribution. Late Cretaceous magmatic rocks were concentrated in the Korean Peninsula basin. In the last part of the thesis, the author also puts forward the key issues that the Korean monarchy and the controversial monk in the comparative study between China and the DPRK need to study further.