| 吉林省大黑山条垒南段古生代晚期─中生代构造演化 |
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| 引用本文： | 林建平 万天丰. 吉林省大黑山条垒南段古生代晚期─中生代构造演化[J]. 现代地质, 1994, 8(4): 467-473 |
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| 作者姓名： | 林建平 万天丰 |
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| 摘 要： | 根据大黑山条垒南段的地质建造及构造形变特征，结合区域地质资料，将本区古生代晚期一中生代构造演化史划分为３个构造阶段，即海酉一印支期、燕山期和四川期。不同时期的构造变形、岩浆活动和应力场等特征不同：海西－印支期以ＳＮ向挤压为主；燕山期为ＮＷ－ＳＥ向挤压，平均差应力值为１１２．５ＭＰａ；四川期最大主压应力轴呈ＮＮＥ－ＳＳＷ向，平均差应力值为１０１．４ＭＰａ。四川期为本区构造格架基本定型的时期。
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| 关 键 词： | 古生代晚期─中生代，构造变形，主应力方向，差应力值，构造演化 |
TECTONIC EVOLUTION OF LATE PALEOZOIC-MESOZOIC IN SOUTHERN DAHEISHAN HORST,JILIN PROVINCE |
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| Abstract: | On the basis of the geological formation and tectonic deformation in southern Daheishan Horst, and geological regional data, the tectonic evolution of Late Paleozoic-Mesozoicis divided into three tectonic stages, i. e. the Hercynian-Indosinian stage, the Yanshanianstage and the Sichuanian stage. The tectonic deformation, magmatic activity and tectonicstress field of each stage are discussed. In the Hercynian-Indosinian stage, a series of foldswith EW-trending axis were formed by north-southward compression. The maximum principal axis of compressive stress in the Yanshanian stage is NW-SE trending, and the axisin the Sichuanian stage NNE-SSW trending. The average value of differential stress in theYanshanian stage is 112. 5 MPa, and the value in the Sichuanian stage 101. 4 MPa. TheSichuanian stage is the fundamental stage of tectonic framework in this area. |
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| Keywords: | Late Paleozoic-Mesozoic tectonic deformation principal direction of stress axes value of differential stress tectonic evolution |
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