Abstract Two distinct styles of gold mineralization occurred in the Liaodong Peninsula, in the northeastern North China Craton. One formed an altered rock-type gold deposit in the west, and the other formed a quartz vein-type deposit in the east. Geological investigations and structural analysis show that these deposits may have originated from two distinct tectono-magmatic hydrothermal systems. The former is an E–W-trending contractional–extensional structural system formed in the Late Triassic, which includes the deposits in Baiyun, Jianshangou, and Maoling. The latter is related to high-angle strike-slip faults formed in the Early Cretaceous, and includes the Wulong gold deposit. Stress-induced tectonic analyses show that the principal stress in the western district was nearly N–S-oriented contractional stress initially, which subsequently changed to extensional stress; this might have been the result of the collision and subsequent extension of the Siberia Craton, North China Craton, and Yangzi Craton in the Late Triassic. The principal stress in the eastern district was nearly NW–SE-oriented contractional and sinistral shear stress initially, which subsequently changed to extensional stress, which may be the result of regional extension associated with the westward subduction of the Paleo-Pacific Plate in the Early Cretaceous. The structural control of the gold mineralization is manifested at all scales from regional to mines to orebodies; that is, the grading of the ores was controlled by different generations or orders of deformation. Gold ores were mainly formed under brittle or brittle-shear deformation conditions; in particular with extensive ore-bearing catalasite flows; which were generated by both the brittle or brittle-shear failure along major fault systems and related Late Triassic and Early Cretaceous magmatic hydrothermal activity. This genetic origin for gold mineralization and ore-bearing catalasite flows may provide support for the mechanism of flash vaporization in mineralization processes that form mesothermal gold systems.

中文翻译：

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华北克拉通东北部辽东半岛金矿构造控制及成因

摘要 华北克拉通东北部辽东半岛出现了两种截然不同的金矿化方式。一个在西部形成蚀变岩型金矿床，另一个在东部形成石英脉型金矿床。地质调查和构造分析表明，这些矿床可能起源于两个不同的构造岩浆热液系统。前者是晚三叠世形成的东西向的收缩-伸展构造体系，包括白云、尖山沟和茂陵等地的沉积物。后者与早白垩世形成的大角度走滑断裂有关，包括五龙金矿床。应力诱导构造分析表明，西部地区的主应力最初为近南北向的收缩应力，随后变为拉伸应力；这可能是晚三叠世西伯利亚克拉通、华北克拉通和扬子克拉通碰撞和随后伸展的结果。东部地区的主应力最初为近 NW-SE 向的收缩和左旋切应力，随后转变为伸展应力，这可能是早期古太平洋板块向西俯冲引起的区域伸展的结果。白垩纪。金矿化的结构控制表现在从区域到矿山再到矿体的各个尺度；也就是说，矿石的品位受不同世代或变形顺序的控制。金矿石主要在脆性或脆性剪切变形条件下形成；特别是在大量含矿触媒石流中；由沿主要断层系统的脆性或脆性剪切破坏以及相关的晚三叠世和早白垩世岩浆热液活动产生。金矿化和含矿触媒流的这种成因可能为形成中温热金系统的矿化过程中的闪蒸机制提供支持。