CAJ | 학술논문

本文运用野外露头考察、沉积岩石学、地质统计等方法，对灵山岛的负载构造和球-枕构造进行研究。这些负载构造和球-枕构造侧向延伸好，在整个剖面上连续分布，具有多尺度、多形态、多组合等特点。形成负载构造和球-枕构造的前提条件是地层密度的倒置(上大下小)，变形的根本驱动力是沉积物自身的重力。球-枕构造和负载构造的形成机制相同，只是变形程度和阶段不同。根据不对称负载构造受横向剪切力分析，证明早白垩世时该盆地存在古斜坡，并且SE高、NW低。综合考虑地震触发形成震积岩的标志特征和灵山岛的构造地质背景，认为本研究区的负载构造和球-枕构造系古地震触发形成。
본문운용야외로두고찰、침적암석학、지질통계등방법，대령산도적부재구조화구-침구조진행연구。저사부재구조화구-침구조측향연신호，재정개부면상련속분포，구유다척도、다형태、다조합등특점。형성부재구조화구-침구조적전제조건시지층밀도적도치(상대하소)，변형적근본구동력시침적물자신적중력。구-침구조화부재구조적형성궤제상동，지시변형정도화계단불동。근거불대칭부재구조수횡향전절력분석，증명조백성세시해분지존재고사파，병차SE고、NW저。종합고필지진촉발형성진적암적표지특정화령산도적구조지질배경，인위본연구구적부재구조화구-침구조계고지진촉발형성。
The load structures and ball-and-pillow structures on the Lingshan Island, Shandong are examined in the light of outcrop observation, sedimentary petrology and geostatistical analysis. These load structures and ball-and-pillow structures are laterally extensive in the studied sections, and have the features of multiple scales, multiple morphologies and multiple associations. They are interpreted to be originated from the stratigraphic density inversion (bigger in the upper part and smaller in the lower part). In other words, the gravity-induced overlying deposits with greater densities and earthquake-induced liquification penetrated into the underlying strata, resulting in the formation of the load structures and ball-and-pillow structures. The asymmetrical morphology of the load structures strongly support the existence of the Lingshan palaeoslope during the Early Cretaceous. The statistics of the sizes of the load structures and ball-and-pillow structures may be used to deduce those of earthquake magnitudes. The presence of abundant load structures on the Lingshan Island indicates that frequent structural activities, especially the seismic activities may be responsible for the formation of the load structures and ball-and-pillow structures in the study area.