海洋地质与第四纪地质2017，Vol.37Issue(4)：193-208,16.DOI:10.16562/j.cnki.0256-1492.2017.04.013
南海转换断层成因机制及对南海扩张的启示
ORIGIN OF TRANSFORM FAULTS IN SOUTH CHINA SEA AND ITS IMPLICATIONS FOR SOUTH CHINA SEA SPREADING
摘要
Abstract
Transform faults are the keys to reveal the evolution of marginal seas.However,the mechanism of their formation remains a puzzle and hotspot in geosciences.Based on high-resolution tectonomorphology,basin geometry,gravity and magnetic anomalies,magnetic lineation pattern,Moho contours,submarine heat flow,and seismic profiles in the Northern South China Sea,together with studies of regional geological settings,plate reconstruction and geodynamic analysis,this paper tries to redefine the spatial distribution pattern of transform faults in the SCS and strike-slip faults in adjacent areas.Our data suggests that transform faults and strike-slip faults are in general in NNE-trending in the SCS.Therefore,a new model of marginal sea spreading is proposed against the previous Cenozoic plate movement models concerning the East Asian Continental Margin and SCS,which believed that the strike of transform faults was NW.The NNE-trending transform faults in the SCS may be the ones inherited from the strike-slip faults at the rifting continental margin.They are actually part of the large-scale NNE-trending dextral strike-slip faults distributed in the continental shelf of the SCS.Therefore,they could be treated as the natural extension of the NNE-trending strike-slip faults in the South China Block.They are not analogous to the positive expansion of the normal mid-ocean ridge,but a kind of oblique spreading.They are not perpendicular to the spreading axis.关键词
转换断层/右行走滑断层/板块重建/南海海盆Key words
transform fault/dextral strike-slip fault/plate reconstruction/South China Sea分类
海洋科学引用本文复制引用
张勇,任治军,葛海明,王广哲,李三忠,郭玲莉,王鹏程..南海转换断层成因机制及对南海扩张的启示[J].海洋地质与第四纪地质,2017,37(4):193-208,16.基金项目
国家自然科学基金项目(41325009,41190072,41502321,41402172,41502042,41502185) （41325009,41190072,41502321,41402172,41502042,41502185）
山东省泰山学者特聘教授项目 （）
鳌山卓越科学家计划项目(2015ASTP-0S10) （2015ASTP-0S10）
