Vol. 164, 2007, pp. 31–47 | BRIAN F. WINDLEY, DMITRIY ALEXEIEV, WENJIAO XIAO, ALFRED KRÖNER & GOMBOSUREN BADARCH
The article discusses the tectonic evolution of the Central Asian Orogenic Belt, which formed through the accretion of various geological features such as island arcs, ophiolites, oceanic islands, seamounts, accretionary wedges, and microcontinents. The belt's formation began around 1000 million years ago and continued until about 250 million years ago. Key events include the rifting of the Siberian margin, the collision of the Tuva-Mongolian microcontinent, and the subduction-accretion of ophiolites. The authors evaluate different tectonic models, including the one- or three-arc Kipchak model and an archipelago-type (Indonesian) model, and suggest that the latter is more viable. They also highlight the presence of diagnostic features of ridge-trench interaction, such as granites, adakites, boninites, and high-temperature metamorphic belts. The paper provides a detailed geological framework and discusses the paleogeographical configurations of the Central Asian Orogenic Belt, including the closure of the Palaeo-Asian ocean and the collisions between different continental blocks.The article discusses the tectonic evolution of the Central Asian Orogenic Belt, which formed through the accretion of various geological features such as island arcs, ophiolites, oceanic islands, seamounts, accretionary wedges, and microcontinents. The belt's formation began around 1000 million years ago and continued until about 250 million years ago. Key events include the rifting of the Siberian margin, the collision of the Tuva-Mongolian microcontinent, and the subduction-accretion of ophiolites. The authors evaluate different tectonic models, including the one- or three-arc Kipchak model and an archipelago-type (Indonesian) model, and suggest that the latter is more viable. They also highlight the presence of diagnostic features of ridge-trench interaction, such as granites, adakites, boninites, and high-temperature metamorphic belts. The paper provides a detailed geological framework and discusses the paleogeographical configurations of the Central Asian Orogenic Belt, including the closure of the Palaeo-Asian ocean and the collisions between different continental blocks.