The Minas-Bahia orogeny juxtaposed Archean crustal fragments and Paleoproterozoic magmatic arcs to form the São Francisco-Congo Paleocontinent by the Rhyacian (ca. 2.05 Ga). Unravelling the Minas segment of the Minas-Bahia Orogenic Belt (MBO) is an important key to understanding the role of the São Francisco-Congo Paleocontinent in the construction of the Columbia Supercontinent. The Orosirian (ca. 1.9 Ga) final amalgamation of Columbia was preceded by a complex history of accretion of Archean nuclei and Proterozoic magmatic arcs. We present new whole-rock element geochemistry and isotopic (Rb-Sr, Sm-Nd) data and U-Pb ages for granitoid rocks of the main basement complexes located in the southern part of the São Francisco cratonic tip, which displays varied degrees of Neoproterozoic reworking related to the Brasiliano orogeny. Published data for the Campo Belo Complex, the Mineiro Belt and the Piedade Block are combined with the new data set to propose an integrated model for the tectonic evolution of the Minas segment of the MBO. This evolutionary model documents a complete Paleoproterozoic orogenic cycle, from subduction with terrane accretion to collision, followed by late-orogenic collapse. Subduction started diachronously between ca. 2.4 Ga and 2.2 Ga involving various Archean nuclei and Paleoproterozoic magmatic arcs that were later amalgamated during two collisional events at ca. 2.10 and 2.05 Ga. The oldest tonalite-trondhjemite-granodiorite (TTG) to sanukitoid magmatic suites transition are of Neoarchean age in the Piedade block, and of Paleoproterozoic age in the Mineiro belt and Mantiqueira complex, apparently indicating a diachronous onset of plate tectonic processes in different crustal segments. The petrogenesis, geochronology and isotopic signatures of these granitoid rocks provide important evidence towards understanding the periodicity of tectonic processes associated with the supercontinent cycle throughout Earth history.

Minas-Bahia造山带并列了太古宙地壳碎片和古元古代岩浆弧，由Rhyacian（约2.05 Ga）形成了SãoFrancisco-Congo古大陆。揭开米纳斯-巴伊亚州造山带（MBO）的米纳斯部分是了解圣弗朗西斯科-刚果古大陆在哥伦比亚超大陆建设中的作用的重要关键。哥伦比亚的Orosirian（约1.9 Ga）最终合并是由太古代核和元古代岩浆弧增生的复杂历史所致。我们提供了新的全岩石元素地球化学和同位素（Rb-Sr，Sm-Nd）数据以及位于圣弗朗西斯科克拉通尖端南部的主要基底复合体的花岗岩岩石的U-Pb年龄，显示了不同程度的与Brasiliano造山运动有关的新元古代返修。坎波贝洛（Campo Belo）综合体，米尼罗（Mineiro）带和皮埃达德（Piedade）区块的已发布数据与新数据集相结合，提出了MBO米纳斯（Minas）段构造演化的综合模型。这个演化模型记录了一个完整的古元古代造山周期，从俯冲到地层增生到碰撞，再到造山后期崩塌。俯冲大约在大约两个月之间开始。2.4 Ga和2.2 Ga涉及到各种太古代核和古元古代岩浆弧，后来在两次碰撞事件中，在约200℃合并。2.10和2.05 Ga。最古老的斜长石-长风白云母-闪长闪长岩（TTG）到薄木岩体岩浆套件过渡在皮埃达德（Piedade）块体为新archarean时代，在Mineiro带和Mantiqueira复合体中为古元古代时代，显然表明在不同地壳段板块构造过程是不同步的。这些花岗岩岩石的成因，年代学和同位素特征为了解整个地球历史上与超大陆循环有关的构造过程的周期性提供了重要的证据。