Abstract The Galat Sufar South (GSS) gold deposit (Block 14, NE Sudan) is located within a complexly deformed zone at the junction between the Keraf Shear Zone and the Atmur-Delgo Suture, within the western portion of the Arabian-Nubian Shield (ANS). The combination of a petrographic and structural study of the gold mineralization at the GSS deposit, carried out at the μm-to tens of km-scale, allows the deciphering of the deformation history of this poorly documented area and provides insights on the geodynamic context favorable for gold mineralization in the northwesternmost Nubian Shield. Our study highlights that the GSS gold deposit recorded a polyphase deformation history dominated by an early, ductile-dominated, progressive deformation episode associated with the economic gold mineralization at GSS. It displays an atypical structural control by subvertical simple shearing evidenced by subvertical linear features (stretching lineation and potential sheath folding). The proposed multi-scale approach helps to correlate this subvertical, linear, progressive deformation event and the coeval economic gold mineralization with the early N-trending compressive tectonics related to the Atmur-Delgo suturing.

中文翻译：

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与苏丹东北部努比亚地盾 Galat Sufar South 矿床金矿化有关的亚垂直、线性和渐进变形

摘要 Galat Sufar South (GSS) 金矿床（14 区块，苏丹东北部）位于阿拉伯-努比亚地盾西部的 Keraf 剪切带和 Atmur-Delgo 缝合线交界处的复杂变形带内（ ANS）。GSS 矿床金矿化的岩相学和结构研究相结合，在微米到几十公里的尺度上进行，可以破译这个记录不足的地区的变形历史，并提供对有利的地球动力学背景的见解用于努比亚地盾西北部的金矿化。我们的研究强调，GSS 金矿床记录了多相变形历史，主要是与 GSS 经济金矿化相关的早期、韧性为主的渐进变形事件。它通过近垂直的简单剪切显示出非典型的结构控制，由近垂直的线性特征（拉伸线形和潜在的鞘折叠）证明。提议的多尺度方法有助于将这种近垂直、线性、渐进变形事件和同期经济金矿化与与 Atmur-Delgo 缝合相关的早期 N 向压缩构造联系起来。