Abstract The heterogeneous South American geology has coined a wide variety of neotectonic settings where crustal seismogenic sources do occur. This fact has led to different approaches for mapping and inventory neotectonic structures. The South American Risk Assessment project promoted the discussion and update under uniform standards of the available information on neotectonic deformation, for its application in regional Probabilistic Seismic Hazard Assessments. As a result, 1533 hazardous faults have been inventoried onshore South America, 497 of them qualifying to feed the engine model driving probabilistic maps. Main hazardous structures are concentrated throughout the eastern boundary of the Northern Andean Sliver and along the foreland-facing Andean Thrust Front. Space geodesy and seismicity illuminate the seismogenic significance of these deformation belts, although few neotectonic surveys have been conducted to date in the latter region. The characteristics of the main structures or deformation zones are here outlined according to their filiation to neotectonic domains, which are dependant on the geologic, seismotectonic, or morphotectonic settings in Andean and extra-Andean regions. The knowledge accrued on the hazardous faults in South America here compiled, reinforces the fact that some of these structures constitute significant hazard sources for many urban areas and critical facilities and should be incorporated in seismic hazard assessments. However, the available fault data are insufficient in many cases or carry significant epistemic uncertainties for fault source characterization. This contribution aims to summarize the present knowledge on the South American hazardous faults as well as the main challenges for successful fault data incorporation into seismic hazard models.

中文翻译：

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南美洲的危险断层；汇编和概述

摘要 南美的异质地质创造了各种各样的新构造环境，其中确实存在地壳发震源。这一事实导致了不同的方法来绘制和盘点新构造结构。南美风险评估项目促进了新构造变形可用信息在统一标准下的讨论和更新，以将其应用于区域概率地震灾害评估。结果，已在南美洲陆上盘点了 1533 个危险故障，其中 497 个有资格输入发动机模型驱动概率图。主要危险结构集中在北安第斯裂片岩的东部边界和面向前陆的安第斯逆冲锋。空间大地测量学和地震活动阐明了这些变形带的发震意义，尽管迄今为止在后一地区进行的新构造调查很少。主要构造或变形带的特征在此根据它们与新构造域的关系进行概述，这些域依赖于安第斯和安第斯以外地区的地质、地震构造或形态构造背景。此处汇编的关于南美洲危险断层的知识强化了这样一个事实，即这些结构中的一些构成了许多城市地区和关键设施的重要危险源，应纳入地震危险性评估。然而，在许多情况下，可用的故障数据是不够的，或者为故障源表征带来重大的认知不确定性。