The Arroyo tembrao stock: implications for the Gondwana magmatism in the eastern North Patagonian region

IF 1.5 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Journal of South American Earth Sciences Pub Date : 2025-10-14 DOI:10.1016/j.jsames.2025.105831

Leonel Schap , Mercedes Barros , Leonardo Strazzere , Daniel A. Gregori , Joaquín Lorenzo Angaroni , Tomás Danei , Mauro Geraldes , José L. Fernández Turiel

引用次数: 0

Abstract

The Permian Arroyo Tembrao Stock, part of the Pailemán Plutonic Complex, is located within the Northeastern Gondwana magmatic belt of the eastern North Patagonian region, Argentina.

The rock is an I-type granitoids, plotting in some diagrams as A-type granites. The normalized diagram to primordial mantle values indicates the possible involvement of the upper Continental crust in generating this Stock, with a design similar to those observed in magmatic arc zones. The melting of greywacke and basaltic rocks could produce the magma that generated the Arroyo Tembrao Stock, with ages of crystallization of 263.7 ± 0.6 Ma and 280.8 ± 2.2 Ma.

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Arroyo tembrao群：对北巴塔哥尼亚东部冈瓦纳岩浆活动的启示

二叠纪Arroyo Tembrao岩群位于阿根廷北部巴塔哥尼亚地区东部Gondwana岩浆带东北部，是Pailemán深成杂岩的一部分。岩石为i型花岗岩，在某些图上为a型花岗岩。与原始地幔值的归一化图表明，上大陆地壳可能参与了该矿床的形成，其设计与在岩浆弧带观察到的相似。灰岩和玄武岩的熔融作用可生成Arroyo Tembrao岩浆，结晶年龄分别为263.7±0.6 Ma和280.8±2.2 Ma。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of South American Earth Sciences 地学-地球科学综合

CiteScore

3.70

自引率

22.20%

发文量

364

审稿时长

6-12 weeks

期刊介绍： Papers must have a regional appeal and should present work of more than local significance. Research papers dealing with the regional geology of South American cratons and mobile belts, within the following research fields: -Economic geology, metallogenesis and hydrocarbon genesis and reservoirs. -Geophysics, geochemistry, volcanology, igneous and metamorphic petrology. -Tectonics, neo- and seismotectonics and geodynamic modeling. -Geomorphology, geological hazards, environmental geology, climate change in America and Antarctica, and soil research. -Stratigraphy, sedimentology, structure and basin evolution. -Paleontology, paleoecology, paleoclimatology and Quaternary geology. New developments in already established regional projects and new initiatives dealing with the geology of the continent will be summarized and presented on a regular basis. Short notes, discussions, book reviews and conference and workshop reports will also be included when relevant.