Abstract The lower to ?middle Cambrian rocks (Terreneuvian, Series 2 and possibly Miaolingian) of the Arrowie Basin are exposed superbly in the Flinders Ranges of South Australia. They comprise two major sedimentary packages: a lower carbonate-rich succession (Hawker Group and correlates) and an upper siliciclastic-dominated succession (Billy Creek Formation, Wirrealpa Limestone and Lake Frome Group). These rocks form one of the most complete lower Cambrian (Terreneuvian and Series 2) successions globally. They contain one of the most diverse known early Cambrian biotas in the world, with trilobites, archaeocyaths, bradoriides, brachiopods, some of the earliest known coralomorphs, small shelly fossils, molluscs, hyoliths, acritarchs and trace fossils. Series divisions, based on ranges of shelly fossils and archaeocyath biostratigraphy are currently being established. Ancient reef structures are prominent in several areas. Syndepositional faulting and diapiric activity affected sedimentation in places. The global significance of the region is enhanced by the presence of tuff horizons at some levels, which provide the opportunity to link the biostratigraphic zones with radiometric dates and carbon isotope curves.

中文翻译：

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南澳大利亚弗林德斯山脉 Arrowie 盆地的寒武纪系统

摘要Arrowie 盆地的下至中寒武统岩石（Terreneuvian、系列 2 和可能的 Miaolingian）在南澳大利亚的弗林德斯山脉出露极好。它们包括两个主要的沉积组合：下部富含碳酸盐的层序（Hawker 组和相关层）和上部以硅质碎屑岩为主的层序（Billy Creek 组、Wirrealpa 石灰岩和弗洛姆湖组）。这些岩石构成了全球最完整的下寒武统（Terreneuvian 和系列 2）系列之一。它们包含世界上已知的最多样化的早寒武世生物群之一，包括三叶虫、古生物、短尾动物、腕足动物、一些已知最早的珊瑚形态、小型贝壳化石、软体动物、冰晶石、acritarchs 和痕迹化石。系列划分，目前正在建立基于贝壳化石和古生物生物地层的范围。古老的珊瑚礁结构在几个地区很突出。同沉积断层作用和底辟活动影响了地方的沉积。该地区的全球重要性因某些水平上凝灰岩层的存在而增强，这提供了将生物地层带与辐射测定日期和碳同位素曲线联系起来的机会。