Abstract The Devonian Period is characterized by an overall mean sea-level higher than is observed today. This pattern is recognized in several basins worldwide and permitted, for example, the flooding of the Rheic ocean through SW Gondwana’s cratonic domain. Nonetheless, this flooding was not purely eustatic. The Ordovician-Devonian geodynamic Famatinian episode also played its role. This tectonic-eustatic interplay favored shallow-marine deposition recorded in several SW Gondwana basins, such as the Parana Basin in Brazil. Even so, the evolution of the Parana Basin through the Devonian and the factors responsible for the accommodation space remain speculative, which leads to bias regarding the correlation of transgressive-regressive events in SW Gondwana. This work aims, by integrating outcrop and subsurface data, to provide a basin-scale stratigraphic framework and a paleogeographical reconstruction of the Ponta Grossa (Early Devonian) and Sao Domingos formations (Middle to Late Devonian) of the Parana Basin. It also correlates the studied interval with adjacent basins to identify the impact of tectonic and eustatic processes on the evolution of SW Gondwana tectono-sedimentary cycles. We identified two 2nd order Transgressive-Regressive sequences that correspond to the lithostratigraphic occurrence of Ponta Grossa and Sao Domingos formations, respectively, and whose maximum transgressive and regressive surfaces and high-hierarchy unconformities are traceable through adjacent basins. The Ponta Grossa-Sao Domingos boundary also delineates an important tectonic event associated with far-field stresses probably caused by Precordilleran orogeny related phenomena. The Ponta Grossa and Sao Domingos formations share several similarities with coeval strata in SW Gondwana basins, indicating that they can be extrapolated and correlated to contemporaneous processes of interregional scale. The first, namely Precordilleran I (Early Devonian) was dominated by tectonics and encompasses the Ponta Grossa and Las Pavas composite sequence set. The second, Precordilleran II (Middle to Late Devonian), was mostly eustatic and encompasses Sao Domingos and Aguarave composite sequence sets. Both intervals are part of the Famatinian geodynamic cycle.

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巴西巴拉那盆地泥盆纪：层序地层、古地理和西南冈瓦纳区域间相关性

摘要 泥盆纪的特征是整体平均海平面高于今天所观测到的海平面。这种模式在世界范围内的几个盆地中得到认可，并被允许，例如，通过西南冈瓦纳的克拉通域泛滥的莱茵洋。尽管如此，这种洪水并不完全是洋洋洒洒。奥陶纪-泥盆纪地球动力学法马提阶事件也发挥了作用。这种构造-静海相互作用有利于在几个西南冈瓦纳盆地（例如巴西的巴拉那盆地）中记录的浅海沉积。即便如此，Parana 盆地通过泥盆纪的演化以及导致容纳空间的因素仍然是推测性的，这导致对 SW Gondwana 海侵-海退事件相关性的偏见。这项工作旨在通过整合露头和地下数据，提供盆地尺度地层格架和巴拉那盆地的蓬塔格罗萨（早泥盆世）和圣多明戈地层（中至晚泥盆世）的古地理重建。它还将所研究的间隔与相邻盆地相关联，以确定构造和浮沉过程对西南冈瓦纳构造沉积旋回演化的影响。我们确定了两个二阶海侵-海退层序，它们分别对应于 Ponta Grossa 和 Sao Domingos 地层的岩石地层产状，其最大海进和海退面以及高层次不整合面可通过相邻盆地进行追踪。Ponta Grossa-Sao Domingos 边界还描绘了一个与远场应力相关的重要构造事件，该事件可能由 Precordilleran 造山运动相关现象引起。Ponta Grossa 和 Sao Domingos 地层与西南冈瓦纳盆地的同期地层有几个相似之处，表明它们可以外推并与区域间规模的同期过程相关联。第一个，即 Precordilleran I（早泥盆世）以构造为主，包括 Ponta Grossa 和 Las Pavas 复合序列集。第二个，Precordilleran II（中泥盆纪到晚泥盆纪），主要是eustatic，包括Sao Domingos和Aguarave复合序列集。两个间隔都是法马蒂尼亚地球动力学循环的一部分。Ponta Grossa 和 Sao Domingos 地层与西南冈瓦纳盆地的同期地层有几个相似之处，表明它们可以外推并与区域间规模的同期过程相关联。第一个，即 Precordilleran I（早泥盆世）以构造为主，包括 Ponta Grossa 和 Las Pavas 复合序列集。第二个，Precordilleran II（中泥盆纪到晚泥盆纪），主要是eustatic，包括Sao Domingos和Aguarave复合序列集。两个间隔都是法马蒂尼亚地球动力学循环的一部分。Ponta Grossa 和 Sao Domingos 地层与西南冈瓦纳盆地的同期地层有几个相似之处，表明它们可以外推并与区域间规模的同期过程相关联。第一个，即 Precordilleran I（早泥盆世）以构造为主，包括 Ponta Grossa 和 Las Pavas 复合序列集。第二个，Precordilleran II（中泥盆纪到晚泥盆纪），主要是eustatic，包括Sao Domingos和Aguarave复合序列集。两个间隔都是法马蒂尼亚地球动力学循环的一部分。Precordilleran II（中到晚泥盆世），主要是eustatic，包括Sao Domingos 和Aguarave 复合序列集。两个间隔都是法马蒂尼亚地球动力学循环的一部分。Precordilleran II（中到晚泥盆世），主要是eustatic，包括Sao Domingos 和Aguarave 复合序列集。两个间隔都是法马蒂尼亚地球动力学循环的一部分。