Abstract —This paper presents the results of paleomagnetic studies of the Proterozoic sedimentary and igneous rocks composing the structure of sections of the Olenek and Udzha uplifts. Carbonate rocks of the upper unit of Khaipakh formation have been studied within the Olenek uplift, and terrigenous and volcanic-sedimentary rocks of the Udzha and Unguokhtakh formations and the Early Mesoproterozoic igneous complex have been investigated within the Udzha uplift. Within the Olenek uplift, the carbonate rocks of the upper unit of the Khaipakh formation have been studied; within the Udzha uplift–terrigenous and volcanogenic-sedimentary rocks of the Udzha and Unguokhtakh formations, and the Early Mesoproterozoic magmatic complex. The results of the paleomagnetic study (1) indicate that the upper unit of Khaipakh formation of the Olenek uplift and the Udzha formation of the Udzha uplift have different sedimentation age, which contradicts the currently accepted correlation scheme of the Proterozoic sections in the northern Siberian platform; (2) support the existence of two stages of the Proterozoic magmatism in the territory of the Udzha uplift, with a more ancient stage having an age of ~1500 Ma according to the paleomagnetic data; (3) show that from ~1500 to 1110 Ma ago, the Siberian platform was located in the equatorial and subequatorial latitudes.

中文翻译：

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西伯利亚地台东北部Udzha 和Olenek 隆起中元古代岩石的古地磁和年代相关性

摘要 —本文介绍了对构成 Olenek 和 Udzha 隆起剖面结构的元古代沉积岩和火成岩的古地磁研究结果。在Olenek隆起研究了Khaipakh组上部单元碳酸盐岩，在Udzha隆起研究了Udzha组和Unguokhtakh组的陆源和火山沉积岩以及早中元古代火成岩杂岩体。在 Olenek 隆起内，研究了 Khaipakh 组上部单元的碳酸盐岩；Udzha 和 Unguokhtakh 组的 Udzha 隆起-陆源和火山-沉积岩，以及早中元古代岩浆杂岩。古地磁研究结果(1)表明Olenek隆起Khaipakh组上部单元与Udzha隆起Udzha组沉积时代不同，与目前公认的西伯利亚台地北部元古界剖面对比方案相矛盾; (2) 支持乌扎隆起境内存在两个元古界岩浆活动，其中一个更古老的阶段根据古地磁资料年龄为~1500 Ma；(3) 表明~1500~1110 Ma前，西伯利亚地台位于赤道和赤道以下纬度。(2) 支持乌扎隆起境内存在两个元古界岩浆活动，其中一个更古老的阶段根据古地磁资料年龄为~1500 Ma；(3) 表明~1500~1110 Ma前，西伯利亚地台位于赤道和赤道以下纬度。(2) 支持乌扎隆起境内存在两个元古界岩浆活动，其中一个更古老的阶段根据古地磁资料年龄为~1500 Ma；(3) 表明~1500~1110 Ma前，西伯利亚地台位于赤道和赤道以下纬度。