Paleozoic tectonic evolution of the eastern Central Asian Orogenic

lt;p>The eastern Central Asian Orogenic Belt (CAOB) in NE China is a key area for investigating continental growth. However, the complexity of its Paleozoic geological history has meant that the tectonic development of this belt is not fully understood. NE China is composed of the Erguna and Jiamusi blocks in the northern and eastern parts and the Xing’an and Songliao-Xilinhot accretionary terranes in the central and southern parts. The Erguna and Jiamusi blocks have Precambrian basements with Siberia and Gondwana affinities, respectively. In contrast, the Xing’an and Songliao-Xilinhot accretionary terranes were formed via subduction and collision processes. These blocks and terranes were separated by the Xinlin-Xiguitu, Heilongjiang, Nenjiang, and Solonker oceans from north to south, and these oceans closed during the Cambrian (ca. 500 Ma), Late Silurian (ca. 420 Ma), early Late Carboniferous (ca. 320 Ma), and Late Permian to Middle Triassic (260–240 Ma), respectively, forming the Xinlin-Xiguitu, Mudanjiang-Yilan, Hegenshan-Heihe, Solonker-Linxi, and Changchun-Yanji suture zones. Two oceanic tectonic cycles took place in the eastern Paleo-Asian Ocean (PAO), namely, the Early Paleozoic cycle involving the Xinlin-Xiguitu and Heilongjiang oceans and the late Paleozoic cycle involving the Nenjiang-Solonker oceans. The Paleozoic tectonic pattern of the eastern CAOB generally shows structural features that trend east-west. The timing of accretion and collision events of the eastern CAOB during the Paleozoic youngs progressively from north to south. The branch ocean basins of the eastern PAO closed from west to east in a scissor-like manner. A bi-directional subduction regime dominated during the narrowing and closure process of the eastern PAO, which led to “soft collision” of tectonic units on each side, forming huge accretionary orogenic belts in central Asia.</p>

Paleozoic tectonic evolution of the eastern Central Asian Orogenic Belt in NE China - ScienceDirect

The Early Cretaceous tectonic evolution of the southern Great Xing'an Range, northeastern China: new constraints from A2-type granite and monzodiorite

Paleozoic tectonic evolution of the eastern Central Asian Orogenic Belt in NE China - ScienceDirect

Paleozoic tectonic evolution of the eastern Central Asian Orogenic Belt in NE China - ScienceDirect

Early Paleozoic geodynamic evolution of the Eastern Central Asian Orogenic Belt: Insights from granitoids in the Xing'an and Songnen blocks - ScienceDirect

Plate Tectonic Evolution of the Southern Margin of Laurussia in the Paleozoic

Paleozoic tectonic evolution of the eastern Central Asian Orogenic Belt in NE China - ScienceDirect

Full article: Reappraising the Early Palaeozoic tectonic framework of the Qinling orogenic belt: evidence from the magmatic records and evolution of interior tectonic units

Early Permian bimodal magmatism and tectonic evolution of the easternmost Paleo-Asian orogenic system

Paleozoic tectonic evolution of the eastern Central Asian Orogenic Belt in NE China

Minerals, Free Full-Text

PDF) Neoproterozoic-middle Paleozoic tectono-magmatic evolution of the Gorny Altai terrane, northwest of the Central Asian Orogenic Belt: constraints from detrital zircon U-Pb and Hf-isotope studies

Petrogenesis of late Permian–middle Triassic volcanic rocks in the Linxi area, southeastern Inner Mongolia, China: implication for late-stage tectonic evolution of the Central Asian Orogenic Belt