GEOLOGICAL CHARACTERISTICS OF OPHIOLITE IN AIMUTUBASITAWU AREA OF XINJIANG

Regionally, The ophiolite in Aimutubasitawu is at the west prolongation part of the Altai-Bayingou-Guertu ophiolite belt, and it is the important part of subduction zone of Zhungeer tiny plate and Yili-Yisaikehu tiny plate in middle Variscan epoch. It is parted in the Shadawang Formation of early Carboniferous which contact with Qi’ergusitao Formation of late Carboniferous by fault, and suffered serious structural dismantling. Through studying the data on the geological and geochemical features of ophiolite, formation time inferred from fossil and measured by zircon U-Pb dating, it is supposed that the ophiolite formed at the end of early Carboniferous, the relatively integrated rock assemblage of ophiolite suffered structural dismantling indicate the environment of ocean bain with limited expansion.