The temporal and spatial relationships between polyphase folding and faulting, regional metamorphism, and granitoids intrusions are discussed for the low-grade basement rocks of the El Jagüelito Formation from the eastern North Patagonian Massif, Argentina, at the inferred western Gondwana margin. As a result of the tectonometamorphic and magmatic events, a late Cambrian-early Ordovician orogenic belt is revealed in northern Patagonia and shall be named the Transpatagonian orogen. It is an NW–SE-trending belt traced from the extra-Andean North Patagonian Cordillera region via the eastern North Patagonian Massif up to the Atlantic coast in the east. The early Paleozoic Transpatagonian orogen is the result of compressional tectonics, also showing a significant dextral shearing, and regional metamorphism leading to the development of a fold-and-thrust belt with an anticlockwise P–T–D-time path. The double-sided orogen is divided into three tectonometamorphic zones bounded by NW–SE trending major faults. Regional comparisons of our results in the present contribution together with available geological data, allow characterizing the orogen as part of a paired metamorphic belt system, with an outboard low-P/high-T belt (northern Patagonia terrane) and a parallel, inboard medium-P/T belt of Barrowian type (Famatinian Orogen on Gondwana margin), respectively. They are juxtaposed tectonically along with the contact of the suture Huincul Fault Zone. The Transpatagonian orogen was implanted along the southernmost Gondwana margin during the final stages of the supercontinent assembly in the early Paleozoic. The tectonism of the Permian Gondwanide orogeny reworked the Transpatagonian orogen.

讨论了阿根廷北部巴塔哥尼亚地块东部冈达瓦纳边缘的ElJagüelito组低品位基底岩石的多相折叠和断层，区域变质和花岗岩侵入之间的时空关系。由于构造变质和岩浆事件，在巴塔哥尼亚北部发现了晚寒武纪-早奥陶纪造山带，并将其命名为跨巴塔哥造山带。这是一条西北-东南向的带，从安第斯山脉北部的北巴塔哥尼亚山脉到东部的大西洋海岸，一直延伸到北巴塔哥尼亚山脉。早古生代巴塔哥尼亚造山带是受压构造的结果，也显示出明显的右旋剪切作用，和区域变质作用导致了逆时针P–T–D时间路径的褶皱冲断带的发展。双面造山带被划分为三个构造变质带，以西北-东南向的主要断层为界。我们在本研究成果中进行的区域比较以及现有的地质数据，可以将造山带描述为成对的变质带系统的一部分，并具有外侧低P /高T带（北巴塔哥尼亚地层）和平行的内侧内侧介质-Barrowian型的P / T带（冈瓦纳边缘的法曼系造山带）。它们与缝合的Huincul断层带的接触点在构造上并列。在早古生代的超大陆组装的最后阶段，将Transpatagonian造山带植入到最南端的冈瓦纳边缘。