The two kinds of tectonic unit systems in Turpan-Hami Basin, Xinjiang, China.

This paper focuses on such related aspects as the types and attributes of tectonic units, and the relation between the tectonic units and basin inversion of Turpan-Hami Basin. The tectonic units in Turpan-Hami Basin fall into two systems of different types: the system of depression/uplift-sag/salient and the system of tectonic belt type. The former is the sedimentary tectonic unit with synsedimentary tectonic attribute, and represents the extensional framework and tectonics in the formation period of the basin; the latter is the deformation tectonic unit with "epigenetic or secondary"tectonic attribute, and reflects the basin inversion in the later stage. In the Turpan-Hami Basin, the"E-W blocking"is the manifestation of synsedimentary tectonic framework, while the "N-S zoning"is mainly the result of compression and tectonic inversion in later stage. This further improves that the original Turpan-Hami Basin is extensional. The basin inversion occurred caused by the compression in the later stage. The above mentioned characteristics may be the special geotectonic phenomena which only this kind of inversion basin has.