Some of Proterozoic basin data are commonly difficult to assess due to the complexity of tectonic processes and lack of volcanic rocks and fossil record. The Mesoproterozoic Paranoá Basin in Central Brazil was investigated through stratigraphic framework integration, depositional environmental analysis and with detrital zircon and statistical analysis. Paranoá Group was evolved in three phases: i) Proto-Basin Stage represents the basal succession, including the transition from the continental environment (alluvial fans) to shallow water platform conditions; ii) Expansion Basin Stage, which includes the most significant sediment thickness and the essential contrasting depositional environment, including tide-dominated platform, storm dominated platform, supratidal and foreshore conditions and iii) Final Basin Stage represents the shallower environment condition, including mix siliciclastic – carbonate successions. The stages are related to different depositional space creation mechanisms: mechanical subsidence to the Proto-Basin Stage, thermo-flexural subsidence to the Expansion Basin Stage, and flexural subsidence to the Final Basin Stage. The detrital zircon data allied with multidimensional scale were crucial to constrain the basin's tectonic evolution. For the basal succession, the maximum depositional age is ∼1.5 Ga with the local crystalline basement (Aurumina Suite tonalitic and granodioritic gneiss). The source areas changed during the expansion stage, in which the sedimentary successions accumulated during this stage present maximum depositional age of ∼1.3 Ga and a widespread distribution pattern. In the final phase, the maximum depositional age is ∼1.1 Ga, including a complex distribution of ages representative of different source areas. The new and compiled data presented in this study provide new insights about the Goiás-Pharusian opening and implications on the configuration in the western margin of the São Francisco Craton.

由于构造过程的复杂性以及火山岩和化石记录的缺乏，一些元古代盆地数据通常难以评估。通过地层格架整合、沉积环境分析以及碎屑锆石和统计分析，对巴西中部中元古代Paranoá盆地进行了调查。Paranoá Group 演化分三个阶段：i) 原始盆地阶段代表基底演替，包括从大陆环境（冲积扇）到浅水台地条件的过渡；ii) 扩张盆地阶段，包括最显着的沉积厚度和基本对比沉积环境，包括潮汐主导平台、风暴主导平台、潮上和前滨条件以及 iii) 最终盆地阶段代表较浅的环境条件，包括混合硅质碎屑 - 碳酸盐岩层序。这些阶段与不同的沉积空间形成机制有关：机械下沉到原始盆地阶段，热弯曲下沉到膨胀盆地阶段，以及弯曲下沉到最终盆地阶段。与多维尺度相关的碎屑锆石数据对于约束盆地的构造演化至关重要。对于基底层序，最大沉积年龄约为 1.5 Ga，具有局部结晶基底（Aurumina Suite 片麻岩和花岗闪长片麻岩）。源区在扩张阶段发生了变化，其中该阶段积累的沉积层序最大沉积年龄为~1。3 Ga 和广泛的分布模式。在最后阶段，最大沉积年龄为~1.1 Ga，包括代表不同源区的复杂年龄分布。本研究中提供的新数据和汇编数据提供了关于戈亚斯-法鲁斯开口的新见解以及对圣弗朗西斯科克拉通西部边缘构造的影响。