Abstract Closure of Neo-Tethys between the Late Cretaceous and Miocene caused obduction of intra-Neo-Tethys volcanic arc allochthons onto the northern margin of the Arabian-Nubian Shield. This loading led to downwarping of the shield forming a flexural basin in which the Tanjero Formation and later Red Beds accumulated. Analysis of the detrital zircon populations in these sedimentary units provides additional evidence supporting the petrographic data for the presence and unroofing of the allochthons. Both the Tanjero Formation and Red Beds show evidence of initial derivation of detritus from the Nubian-Arabian Shield together with minor Paleozoic detritus from Egypt, Turkey and/or Iran. The youngest detrital zircon grains in the Tanjero Formation are of Paleocene age and probably represent northern derivation from the Sanandaj-Sirjan Zone. In contrast, the upper Miocene Red Beds contain detrital zircon of Eocene age that confirms the petrographic evidence for derivation from, and hence emplacement of, the lower allochthon of intra-Neo-Tethys Walash-Naopurdan rocks.

中文翻译：

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伊拉克东北部库尔德斯坦地区碎屑锆石 SHRIMP 测年揭示的 Tanjero 和 Red Bed 碎屑沉积岩的来源：对新特提斯异地生物的海洋闭合和开顶的限制

摘要 晚白垩世和中新世之间新特提斯的闭合导致了新特提斯火山弧内的异地生物向阿拉伯-努比亚地盾北缘的内生。这种加载导致地盾向下翘曲，形成了一个弯曲盆地，Tanjero 组和后来的红层在其中堆积。对这些沉积单元中碎屑锆石种群的分析提供了额外的证据，支持有关异地生物存在和未顶盖的岩相学数据。Tanjero 组和 Red Beds 都显示了最初来自努比亚-阿拉伯地盾的碎屑以及来自埃及、土耳其和/或伊朗的少量古生代碎屑的证据。Tanjero 组中最年轻的碎屑锆石颗粒为古新世，可能代表 Sanandaj-Sirjan 带的北部衍生。