摘要:鲁西地块是华北克拉通东部重要的构造单元，经历了多期构造演化，裂缝十分发育，是研究裂缝的有利场所。通过野外地质观测和室内研究，对鲁西地块部分地区的裂缝的产状、类型、开度、间距、填充物等参数进行了统计分析，得出裂缝优势方向主要为NNW向、SEE向、NEE向、NE向和NW向。在野外分期配套的基础上，结合区域构造应力场，用过滤法对鲁西地块中、新生界的裂缝进行了分期配套，初步分为NNW和SEE向，NNW和NEE向，NNW、NE、NWW和NEE向3期，并分别指示了早白垩世晚期至晚白垩世、古新世至始新世早期、始新世中期至渐新世区域构造应力场。
关键词: 构造裂缝/
演化/
构造应力场/
中、新生界/
鲁西地块
Abstract:The Luxi block is an important tectonic unit in the eastern part of the North China Craton. It has undergone multi-stage tectonic evolution, and fractures are very developed in Mezo-Cenozoic. It is a favorable place to study fractures. Through field survey and indoor statistical analysis, the statistical analysis of the occurrence, type, aperture, spacing, filling and other parameters of the fractures in parts of the Luxi block is carried out, the dominant orientation of fractures is NNW, SEE, NEE, NE and NW, with the X shaped pattern developed. Combined with fracture period and combination match in the field and the analysis of the regional structure stress field, the filtering method is used to stage the fractures developed in the Mesozoic and Cenozoic stratum of Luxi block, which is divided into three stages and indicated the regional structure stress field in period of the Late of Early Cretaceous-Late Cretaceous, Paleocene-Early Eocene, and Middle of Eocene-Oligocene, respectively.
Key words:Structure fracture/
Evolution/
Structure stress field/
Meso-Cenozoic/
Luxi block
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