Abstract It is generally recognized that the Columbia (Nuna) supercontinent was assembled during the Paleoproterozoic (2.1–1.8 Ga) planetary-scale orogenic events. Paleomagnetic and palinspastic modeling proposes more than a dozen configurations for the Paleoproterozoic supercontinent. The locations and connections of the different continental blocks within this supercontinent remain controversial. The southern margin of Baltica either faced the open ocean or was connected with other paleocontinents such as Atlantica (Amazonian and West African Cratons) in different models. The large Volga-Don province (southwest Russia) has been proposed as the best candidate for connection with the Eburnean/Birimian (West Africa) and Transamazonian (South America) orogens before the Columbia assembly. Here we present a detailed comparison of the ages, compositions, and geochemical features of the voluminous metamorphosed mafic and felsic lithologies, pre- and post-collisional intrusions, and overlying sediments that formed in the interval 2.25–2.05 Ga in the orogens that suture the Archean blocks in Sarmatia, Volgo-Uralia, Amazonia and West Africa. The main events are limited by key complexes as follows: metavolcanic rocks (tholeiites, calc-alkaline, Na-rhyolites) of 2.23–2.12 Ga; pre-collision TTG 2.16–2.13 Ga and gabbro of 2.15–2.13 Ga; meta-sedimentary rocks (greywackes) of >2.10 Ga; coarse terrigenous sediments (conglomerates, sandstones) of 2.11–2.05 Ga; post-collision TTGs of 2.11–2.07 Ga, K-granites of 2.09–2.05 Ga and gabbrodiorites of ca. 2.07 Ga. Available age data allow us to draw a correlation among the Archean domains of Sarmatia, Volgo-Uralia (parts of Baltica), Amazonia and West Africa (parts of Atlantica). Our reconstruction provides a better framework for the crustal evolution and related metallogeny of these continental blocks, as well as the major orogens in the Proterozoic.

中文翻译：

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元古代的波罗的海（东欧克拉通）和大西洋（亚马逊和西非克拉通）：前哥伦比亚的联系

摘要 人们普遍认为，哥伦比亚（Nuna）超大陆是在古元古代（2.1-1.8 Ga）行星尺度造山事件期间组装而成的。古地磁和回弹力模型为古元古代超大陆提出了十几种构型。这个超大陆内不同大陆块的位置和连接仍然存在争议。波罗的海的南缘要么面向公海，要么以不同的模式与大西洋（亚马逊和西非克拉通）等其他古大陆相连。在哥伦比亚大会召开之前，大伏尔加-顿河省（俄罗斯西南部）已被提议作为与埃本/比里米安（西非）和跨亚马逊（南美）造山带连接的最佳候选者。在这里，我们提供了年龄的详细比较，大量变质基性和长英质岩性、碰撞前和碰撞后侵入体的组成和地球化学特征，以及在缝合萨尔马提亚、伏尔加-乌拉利亚、亚马逊流域的太古宙块体的造山带中形成于 2.25-2.05 Ga 区间的上覆沉积物和西非。主要事件受到以下关键复合体的限制：2.23-2.12 Ga 的变质火山岩（拉斑岩、钙碱性、钠流纹岩）；预碰撞 TTG 2.16–2.13 Ga 和辉长岩 2.15–2.13 Ga；> 2.10 Ga的变质沉积岩（灰岩）；2.11-2.05 Ga 的粗陆源沉积物（砾岩、砂岩）；2.11-2.07 Ga 的碰撞后 TTG、2.09-2.05 Ga 的 K 花岗岩和约 2.07 Ga。可用的年龄数据使我们能够在萨尔马提亚、伏尔加-乌拉利亚（波罗的海部分地区）、亚马逊和西非（大西洋的部分地区）。我们的重建为这些大陆块体以及元古代主要造山带的地壳演化和相关成矿提供了更好的框架。