New LA–ICP–MS U–Pb zircon ages from the Nyong Complex of southwestern Cameroon—a part of the West Central African Fold Belt—trace Late Mesoarchean (∼2,850 Ma), Middle Palaeoproterozoic (∼2,080 Ma), and Neoproterozoic (∼605 Ma) events: Two meta‐syenites and the protolith of an amphibolite are Late Mesoarchean; two meta‐granodiorites are Middle Palaeoproterozoic; the amphibolite may have recrystallized in the Middle Palaeoproterozoic; all rocks are overprinted by the Neoproterozoic event. Integration with published data shows that our amphibolite sample has one of the oldest amphibolite‐protolith ages (∼2,810 Ma) reported so far. It shares the Middle Palaeoproterozoic metamorphism/recrystallization with other, previously dated amphibolites. An earlier reported metamorphic zircon age (∼2,090 Ma) from eclogite is somewhat older than the regional Middle Palaeoproterozoic metamorphism/recrystallization ages (∼2,040 Ma) reported from amphibolites. Thus, the eclogite–amphibolite ages may date an exhumation process. A published charnockite age, interpreted as an Early Mesoarchean crystallization age, is older than the Late Mesoarchean meta‐syenite and amphibolite‐protolith dates; its Middle Palaeoproterozoic metamorphism/recrystallization age, however, is identical with the meta‐granodiorites and amphibolites. The Neoproterozoic ages demonstrate the regional overprint of the Nyong Complex during this period. Integration of the Nyong Complex ages with published ones from the entire West Central African Fold Belt, and comparison with those from West Africa and South America, support their common origin from the Palaeoproterozoic collision between the Archean Congo and São Francisco shields.

中文翻译：

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Nyong复杂的准闪长岩的新的U–Pb锆石年龄：对喀麦隆西南部（中非）的欧本/反亚马孙造山作用的启示

来自喀麦隆西南部Nyong复杂地带的新LA–ICP–MS U–Pb锆石年龄（中西部非洲褶皱带的一部分）追溯到中元古代（〜2,850 Ma），中古元古代（〜2,080 Ma）和新元古代（〜 605 Ma）事件：晚变中古统有两个亚闪长岩和角闪石的原生质。中古古生界有两个准闪长闪长岩。闪石可能在中古元古代重结晶了。新元古代事件覆盖了所有岩石。与已发表数据的整合表明，我们的闪石样品具有迄今报道的最古老的闪石-原生石年龄（〜2,810 Ma）之一。它与其他过时的角闪石具有古元古代中期的变质/重结晶作用。较早报道的变质锆石年龄（〜2，来自榴辉岩的090 Ma）比角闪石报道的区域中古元古代变质/再结晶年龄（〜2,040 Ma）年龄要大一些。因此，榴辉岩-闪石时代可能会导致发掘过程。已公布的霞石岩时代，被解释为美索尔初纪的早期结晶时代，早于美索尔初生的亚辉长岩和角闪石-原岩时代。然而，其中古元古代变质/重结晶时代与变质闪长闪长岩和角闪石相同。新元古代时代表明了在此期间Nyong情结的区域性叠印。将Nyong Complex年龄与整个西非中部褶皱带出版的年龄进行整合，并与西非和南美的年龄进行比较，