杨忠杰. 1988: 辽宁省区域地质基本特征及主要成果. 地质通报, (2): 1-12.
    引用本文: 杨忠杰. 1988: 辽宁省区域地质基本特征及主要成果. 地质通报, (2): 1-12.
    YANG Zhong-jie. 1988: BASIC CHARACTERISTICS OF THE REGIONAL GEOLOGY OF LIAONING PROVINCE AND MAIN ACHIEVEMENTS. Geological Bulletin of China, (2): 1-12.
    Citation: YANG Zhong-jie. 1988: BASIC CHARACTERISTICS OF THE REGIONAL GEOLOGY OF LIAONING PROVINCE AND MAIN ACHIEVEMENTS. Geological Bulletin of China, (2): 1-12.

    辽宁省区域地质基本特征及主要成果

    BASIC CHARACTERISTICS OF THE REGIONAL GEOLOGY OF LIAONING PROVINCE AND MAIN ACHIEVEMENTS

    • 摘要: 本文扼要介绍辽宁省区域地层、岩浆岩、变质岩。地质构造的基本特征。阐述了它们的层序、时代与期次(或阶段)、单元的划分,岩石类型、分布特点、演化历史及其规律性。尤其突出了近年来在区域地质各个方面,所取得主要成果和新的认识。

       

      Abstract: Liaoning province straddles the North China and Tianshan-Khingan stratigraphical regions. In the North China stratigraphical region, except the Upper Ordovician to Lower Carboniferous strata and the Upper Cretaceous strata that are absent, the Archean to Quaternary strata are all developed to different degrees. In the Tianshan-Khingan stratigraphical region, the exposed strata are not complete and there occur only the Ordovician, Silurian, Carboniferous, Permian, Cretaceous and Tertiary. Magmatie activity in the province took place frequently. Seven cycles(phases) may be distinguished; they are the Anshanian, Liaoheian, Yanliaoian, Variscan, Indosinian, Yanshanian and Himalayan cycles. The intrusive rocks are widespread, and their exposed area amounts to about 225.1 sq km. There are a full range and great variety of rock types, with the granitoids occupying the main position. For the volcanic rocks, those of the Yanshanian cycle are best developed, with intermediate-acid ones predominating; those of the Himalayan cycle are dominated by basalt. Regional metamorphic rocks are well developed. Six metamorphic phases may be distinguished, i.e. the early Archean, late Archean, early Proterozoic, Caledonian, Variscan and Indosinian. of these the early and late Archean and early Proterozoic are the most important metamorphic phases. Liaoning. province straddles three first-order tectonic units: the Sino-Kor-ean paraplatform, the Jilin-Heilongjiang fold system and the Inner Mongolian-Greater Khingan fold system. The province has gone through polycyclic development. The history of the polycyclic development can be divided into eight tectonic cycles, i.e. the Anshaian, Liaoheian, Yanliaoian, Caledonian, Yariscan, Indosinian, Yanshanian and Himalayan cycles. The Sino-Korean paraplatform is the principal tectonic unit in the province. It has gone through three stages of devel opment, i.e. the formation of the basement, the development of the cover and the development of the continental-margin mobile belt. Fracture structures are developed, and may be grouped into the Sino-Korean paraplatform fracture system and the circum-Pacific fracture system.

       

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