沧口断裂黄岛段断裂几何结构和活动特征

doi:10.13209/j.0479-8023.2017.051

北京大学学报自然科学版 ›› 2017, Vol. 53 ›› Issue (6): 1011-1020.DOI: 10.13209/j.0479-8023.2017.051

沧口断裂黄岛段断裂几何结构和活动特征

宋键^1,², 唐方头¹, 邓志辉³, 郭玉贵⁴

1. 中国地震局地球物理研究所, 北京 100081
2. 青岛市工程地震研究所, 青岛 266003
3. 广东省地震局, 广州 510070
4. 青岛市地震局, 青岛 266061

收稿日期:2016-05-28 修回日期:2016-10-13 出版日期:2017-11-20 发布日期:2017-11-20
基金资助:
山东省地震局重点科研基金(JJ1301)、国家自然基金(41274101)和中国地震局地球物理研究所基本科研业务费专项(DQJB15c08)资助

Geometric Structure and Activities Features of Cangkou Fault in Huangdao

Jian SONG^1,², Fangtou TANG¹, Zhihui DENG³, Yugui GUO⁴

1. Institute of Geophysics, China Earthquake Administration, Beijing 100081
2. Qingdao Engineering Earthquake Institute, Qingdao 266003
3. Guangdong Earthquake Administration, Guangzhou 510070
4. Qingdao Seismological Bureau, Qingdao 266061

Received:2016-05-28 Revised:2016-10-13 Online:2017-11-20 Published:2017-11-20

摘要/Abstract

摘要：

通过地质和地貌调查、探槽开挖、钻孔探测及地质年代测定等方法, 对沧口断裂黄岛段进行详细的研究。结果表明: 沧口断裂在黄岛前湾一带经保税区、武家庄、长江路街道办事处、辛庄、高家台、张家庄、小洼、白果树村和新建村进入黄海; 沧口断裂带在黄岛整体上呈北东走向, 倾向北西, 长约15 km, 断裂带宽度在5~35 m之间; 断层主要发育在燕山花岗岩体中, 对白垩纪地层、现代地貌和第四纪沉积有一定的控制作用; 经过多期运动, 沧口断裂黄岛段中更新世以来以右旋走滑运动为主, 兼有逆冲运动, 断裂带中发育断层泥, 断裂带附近基岩破碎严重。出于安全考虑, 建议沧口断裂黄岛段采取14 m宽度作为避让带宽度。沧口断裂黄岛段空间展布及现代活动性的研究对未来青岛市黄岛区国土资源的合理规划、综合开发以及重大工程的地质灾害评价有重要意义。

关键词: 沧口断裂, 几何结构, 活动特征

Abstract:

Based on the geological survey, trench excavation, drilling exploration and geological dating methods, detailed analysis and comprehensive research were carried on Cangkou fault in Huangdao. Results show that Cangkou fault distribution in Huangdao bay free trade zone, the Wujiazhuang, Changjiang road subdistrict office, Xinzhuang, Gaojiatai, Zhangjiazhuang, Xiaowa, Baiguo village, and into the Yellow Sea near Xinjian village. In Huangdao, Cangkou fault direction is north-east, and tendency is north-west. The length is about 15 km. The width of the fault zone is between 5 and 35 m. Cangkou fault is mainly developed in the Yanshan period granite. The cretaceous strata, modern geomorphology and quaternary deposits are controlled by Cangkou fault. Since the middle Pleistocene, the main movement is right lateral strike slip with thrust movement after multi period movement. The fault zone is interrupted by the fault mud. Bedrock near fault zone is broken. For security reasons, the authors suggest considering 14 m width as the safety distance of the Cangkou fault in Huangdao. The research of the spatial distribution and the present activity of Cangkou fault in Huangdao has important significance to the reasonable planning, comprehensive development and utilization of land, the seismic geological disaster assess-ment of engineering in the future.

Key words: Cangkou fault, geometric structure, activity feature

宋键, 唐方头, 邓志辉, 郭玉贵. 沧口断裂黄岛段断裂几何结构和活动特征[J]. 北京大学学报自然科学版, 2017, 53(6): 1011-1020.

Jian SONG, Fangtou TANG, Zhihui DENG, Yugui GUO. Geometric Structure and Activities Features of Cangkou Fault in Huangdao[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2017, 53(6): 1011-1020.

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链接本文: https://xbna.pku.edu.cn/CN/10.13209/j.0479-8023.2017.051

https://xbna.pku.edu.cn/CN/Y2017/V53/I6/1011

图/表 14

图1 青岛及临近地区地质构造简图

Fig. 1 Geological map of Qingdao and its adjacent area

图2 沧口断裂黄岛段分布

Fig. 2 Distribution of Huangdao section of Cangkou fault

图3 物流中心断裂剖面(镜向南西)

Fig. 3 Fault profile of the logistics center (view to SW)

表1 年龄测试结果

Table 1 Testing results of ages

样品编号	测年方法	年龄/kaBP
ZLK-03	ESR	211±21
ZLK-04	ESR	282±28
ZLK-06	OSL	≥80

图 4 物流中心探槽剖面

Fig. 4 Trench exposure profile at the logistics center

图5 新建村西南沧口断裂剖面

Fig. 5 Cangkou fault profile in the southwest of Xinjian village

图6 新建村西南剖面处的基岩陡坎(镜向南西)

Fig. 6 Bedrock steep ridge near the profile in the south-west of Xinjian village (view to SW)

图7 养殖场路边沧口断裂剖面

Fig. 7 Cangkou fault profile near the road to farm

图8 养殖场路边剖面中的断层泥(镜向北东)

Fig. 8 Fault mud in the roadside profile to farm (view to NE)

图 9 养殖场路边剖面断层破碎带与安山玢岩分界线(镜向北东)

Fig. 9 Boundary between fault broken section and andesitic porphyrite near the road to farm (view to NE)

图10 瑞海花园钻孔联合剖面

Fig. 10 Combined borehole profile in Ruihai garden

图11 PZK5孔强风化块状岩芯中的断层泥

Fig. 11 Fault mud in strongly weathered block drill core in hole PZK5

图12 万达城钻孔联合剖面

Fig. 12 The combined borehole profile in Wanda city

图13 断层泥与基岩接触

Fig. 13 Contact between fault mud and rock

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沧口断裂黄岛段断裂几何结构和活动特征

Geometric Structure and Activities Features of Cangkou Fault in Huangdao

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