THE TECTONIC STRESS FEATURE AND BASINING DURING YANSHAN STAGE IN THE NORTHWEST OF CHINA
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摘要: 研究西北地区晚侏罗世—早白垩世、晚白垩世—早第三纪区域构造应力场发现,大致以阿尔金断裂为界,东部和西部地区应力场状态不同。东部地区晚侏罗世—早白垩世区域构造应力场主压应力为北北东向;而西部地区主压应力以近南北向为主。晚白垩世—早第三纪区域构造应力场在阿尔金断裂以东地区基本继承了前期应力场状态,阿尔金断裂以西地区主压应力方向为北西向。这种应力场特征与上述阶段形成的盆地原型、盆地反转、构造变形相匹配。Abstract: Research on the regional tectonic stress field during the Late Jurassic to the Early Cretaceous and Late Cretaceous to Early Tertiary in the northwest of China shows that the state of stress field to the east of Aerjin Fracture is different from the that to the west of Aerjin Fracture.The principal compressive stress of the regional tectonic stress field is NNE-oriented to the east and near-meridional to the west of Aerjin Fracture during the Late Jurassic to the Early Cretaceous.In Late Cretaceous-Early Tertiary,the regional tectonic stress field to the east of Aerjin Fracture basically carry on the state of previous stress field and the direction of the principal compressive stress to the west of Aerjin Fracture is northwestward.This tectonic stress field feature is consistent with the basin prototype,basin reversal and tectonization forming in the relevant period.
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Key words:
- regional tectonic stress field /
- basining /
- Yanshan Stage /
- the northwest of China /
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[1] 李四光.地质力学概论[M].北京:地质出版社,1973.1～136 [2] 吉让寿.湖南锡矿山初始雁行张裂隙脉研究[J].地质论评,1985,31(1):23～30 [3] Ramsay J G.The Techniques of Modern Structural Geology,Vol.1:Strain analysis[M].New York:Academic,1983 [4] 张渝昌.中国含油气盆地原型分析[M].南京:南京大学出版社,1997.1～450 [5] 康玉柱.中国西北地区压性叠加盆地成油特征[J].石油实验地质,2004,26(2):153～160 [6] 谭试典,赵柳生.河西走廊油气勘探的新领域[J].石油实验地质,1984,6(4):271～278 [7] 吉让寿,刘光祥,潘文蕾等.试论前陆-伸展盆地[J].石油实验地质,2003,25(S1):539～542 [8] 吉让寿,钱一雄,范小林等.中国西北地区中生代盆地与油气[M].西安:西安地图出版社,2000.1～239 -
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