The Huizachal–Peregrina Anticlinorium in northeastern Mexico comprises a wide variety of Precambrian and Paleozoic basement units. In this work, Silurian-to-Permian unmetamorphosed siliciclastic successions (i.e., Cañón de Caballeros, Vicente Guerrero, Del Monte, and Guacamaya formations) forming the Tamatán Group is described; the group overlies the Novillo metamorphic complex, which is the northernmost exposed region of the Oaxaquia microcontinent. In this paper, a provenance model for the Tamatán Group is proposed based on new petrological data, whole-rock geochemical data, and U–Pb LA-ICP-MS detrital zircon age data from these marine fossiliferous strata. The results show a shallow-marine to deep-water clastic succession classified as feldspatho-lithic-quartzose and litho-feldspatho-quartzose (Cañón de Caballeros and Vicente Guerrero formations) and feldspatho-quartzo-lithic and litho-quartzo-feldspathic (Del Monte and Guacamaya formations). The petrological and geochemical data indicate a derivation from felsitic, intermediate, and basic rocks, intense to moderate weathering, and high to moderate recycling of the source area. The geochronological data can be organized into three main detrital zircon U–Pb age groups: (1) a Meso-Neoproterozoic group, likely derived from Oaxaquia and the Maya block, which is also the probable source of 1.5–1.6 Ga zircon grains; (2) an Ordovician–Silurian group that is likely sourced by igneous Maya Block intrusions or from local units such as the Ordovician Peregrina Tonalite; and (3) Pennsylvanian and Permian zircon that can be derived from magmatic arc-related intrusions from the diachronous Rheic closure. Additionally, major, trace, and rare earth element concentrations and ratios from the Tamatán Group indicate a passive margin that evolved into magmatic arc sources within the upper continental crust. The integration of our data indicates that the Tamatán Group was deposited in an unreported back-arc basin from the northernmost part of Oaxaquia near the Maya Block along the northwestern Gondwanan margin during the closure of the Rheic Ocean priori to complete Pangea.

墨西哥东北部的Huizachal–Peregrina Anticlinorium包括各种前寒武纪和古生代地下室单元。在这项工作中，描述了由塔玛坦组形成的志留系至二叠纪未变质的硅质碎屑演替（即，Cañónde Caballeros，Vicente Guerrero，Del Monte和Guacamaya地层）；该组覆盖了Novillo变质复合体，该复合体是Oaxaquia微洲最北端的裸露区域。本文基于新的岩石学数据，全岩石地球化学数据以及这些海洋化石层的U-Pb LA-ICP-MS碎屑锆石年龄数据，提出了塔马坦组的物源模型。结果表明，浅海至深水碎屑演替分为长石质-石英-石英和岩石-长石质-石英（Cañónde Caballeros和Vicente Guerrero地层）以及长石质-四石英-石质和岩性-石英-长石质（Del Monte）和瓜卡马亚队）。岩石学和地球化学数据表明，它是由长英质，中质和基本岩石派生而来，强烈至中等的风化作用，以及源区的高至中等回收率。地质年代数据可以分为三个主要的碎屑锆石U-Pb年龄组：（1）中新元古代组，可能来自Oaxaquia和Maya块，也是1.5-1.6 Ga锆石晶粒的来源；（2）奥陶纪– lur利奥群，可能来自火成岩玛雅块侵入或奥陶纪Peregrina Tonalite等本地单位；（3）宾夕法尼亚和二叠纪锆石，它们可以从逆时针的Rheic闭合带的岩浆弧相关侵入中获得。此外，塔马坦群的主要，痕量和稀土元素浓度和比率指示了被动边缘，该边缘已演化成上陆壳内部的岩浆弧源。我们数据的整合表明，塔马坦群是在Rheic Ocean Priority封闭以完成Pangea期间，从Oaxaquia的最北端，在Maya区块附近，沿着西北Gondwanan边缘沉积的一个未报告的弧后盆地中。（3）宾夕法尼亚和二叠纪锆石，它们可以从逆时针的Rheic闭合带的岩浆弧相关侵入中获得。此外，塔马坦群的主要，痕量和稀土元素浓度和比率指示了被动边缘，该边缘已演化成上陆壳内部的岩浆弧源。我们数据的整合表明，塔马坦群是在Rheic Ocean Priority封闭以完成Pangea期间，从Oaxaquia的最北端，在Maya区块附近，沿着西北Gondwanan边缘沉积的一个未报告的弧后盆地中。（3）宾夕法尼亚和二叠纪锆石，它们可以从逆时针的Rheic闭合带的岩浆弧相关侵入中获得。此外，塔马坦群的主要，痕量和稀土元素浓度和比率指示了被动边缘，该边缘已演化成上陆壳内部的岩浆弧源。我们数据的整合表明，塔马坦群是在Rheic Ocean Priority封闭以完成Pangea期间，从Oaxaquia的最北端，在Maya区块附近，沿着西北Gondwanan边缘沉积的一个未报告的弧后盆地中。