CAJ | 학술논문

下扬子地区地处扬子板块东部，其构造变形特征研究具有重要意义。综合利用区域地质、地震、钻井和地球物理等多方面资料，对下扬子地区断裂、地层发育特征精细解释，建立了贯穿研究区的两条区域地质剖面，即宿迁绍兴大剖面和连云港苏州大剖面。研究表明：下扬子地区可划分为6个一级构造变形单元，依次为苏北胶南造山带、苏北冲断区、南北对冲带、苏南冲断区、浙北冲断区和江南造山带，并可进一步细分为14个二级构造变形单元，这些明确表现出本区中、新生代对冲构造变形特征；两条区域大剖面表现出了挤压、伸展、反转等3类典型构造变形样式，具体可分为5亚类、10小类。
하양자지구지처양자판괴동부，기구조변형특정연구구유중요의의。종합이용구역지질、지진、찬정화지구물리등다방면자료，대하양자지구단렬、지층발육특정정세해석，건립료관천연구구적량조구역지질부면，즉숙천소흥대부면화련운항소주대부면。연구표명：하양자지구가화분위6개일급구조변형단원，의차위소북효남조산대、소북충단구、남북대충대、소남충단구、절북충단구화강남조산대，병가진일보세분위14개이급구조변형단원，저사명학표현출본구중、신생대대충구조변형특정；량조구역대부면표현출료제압、신전、반전등3류전형구조변형양식，구체가분위5아류、10소류。
Located in the eastern part of the Yangtze plate ,the tectonic deformation of the Lower Yangtze is of geological significance .Based on the regional geological data ,seismic data ,well logging , and geophysical data , the stratigraphy and faults are finely interpreted ,and two regional geological profiles are established throughout the study area ,namely Suqian Shaoxing profile and Lianyungang Suzhou profile . The Lower Yangtze region is divided into 6 level one tectonic deformation units , followed by Subei Jiaonan orogenic belt ,Subei thrust area ,north and south thrust belt ,Sunan thrust area ,Zhebei thrust area ,and Jiangnan orogenic belt ,and it can be further divided into 14 level two tectonic deformation units ,which clearly represent the Mesozoic‐Cenozoic tectonic deformation of the Lower Yangtze region . There are three typical tectonic deformation styles out of the two profiles , including compression , extension , inversion , which can be divided into 5 sub‐classes and 10 small classes .