CHARACTERISTICS OF TANCHENG-LUJIANG FAULT AND ITS ROLE ON BASIN CONTROLLING
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摘要: 郯城-庐江断裂是中国东部一条规模巨大的断裂构造带, 贯穿中国东部大陆, 向南延伸入南海, 向北抵达俄罗斯境内。郯城-庐江断裂成生于早白垩世晚期, 是一条巨型压扭性断裂带。研究认为, 郯城-庐江断裂不存在巨大平移, 它形成于早白垩世晚期, 并控制K2-E断陷盆地带及其相伴的断隆带的发生、发展; 郯城-庐江断裂是一条活动性断裂构造带, 研究它的基本特征及其控盆作用, 有助于认识中国东部乃至东亚地区晚中生代以来的大地构造属性。Abstract: Tancheng-Lujiang Fault is a large scale fault belt in the east of China which has a long history of study and many achievements have been obtained.Based on the studies of predecessors, this paper advanced some new opinions as such:large scale strike-slip displacement of the fault may not exit; it formed in late stage of Early Cretaceous; it played a remarkable role on basin controlling.
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Key words:
- Tancheng-Lujiang Fault /
- sinistral strike-slip /
- compress-shearing /
- basin controlling
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图 1 郯庐断裂带新沂—泗洪段地质构造图[6]
Figure 1. Geological map of Xinyi-Sihong in Tanlu fault zone
图 2 山东地区构造体系略图[7]
1—第四系; 2—古近系; 3—上白垩统; 4—下白垩统; 5—侏罗系; 6—古生界; 7—前震旦系; 8—燕山期花岗岩; 9—印支期花岗岩; 10—新华夏系; 11—华夏系; 12—东西构造带; 13—旋卷构造; 14—山字型构造
Figure 2. Simplified structural system map of Shandong Province
图 7 辽南、徐淮震旦纪S形古海盆示意图[11]
Figure 7. Schematic diagram of S-shaped ancient marine basin of new-Proterozoic in Liaonan-Xuhuai area
图 9 郯城—庐江断裂带中段早白垩世岩浆岩分布简图[13]
K—K-Ar年龄; Ar—40 Ar / 39 Ar年龄; Rb—Rb-Sr年龄; U—U-Pb年龄
Figure 9. Distribution of Early Cretaceous igneous rocks along the middle and southern segments of the Tancheng-Lujiang fault zone
图 10 柏庄—安庄构造剖面图[10]
① —大别山(岩)群; ② —构造岩带; ③ —片理化碎粉岩带; ④ —柔皱带; ⑤ —变形砂岩带; ⑥ —粉砂岩带; ⑦ —含砂岩透镜体粉砂岩带; ⑧ —砂岩
Figure 10. Structural cross section from Baizhuang to Anzhuang
图 12 郯庐断裂带上伸展盆地剖面图(剖面位置见图 11)
Ed—东营组; Es1+2 —沙河街组一、二段; Es3 —沙河街组三段; K2w—王氏组; K1q—青山组; Art—泰山群; γ4 —海西期花岗岩; ηO53(2) —燕山晚期石英二长岩; ξ53(2) —燕山晚期正长岩
Figure 12. Cross sections of extensional basins along the Tan-Lu fault zone
表 1 徐淮与辽南地区有关地层对比[11]
Table 1. Correlation of the strata in Xuhuai and Liaonan areas
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