| Abstract: | The main character of melange strata in an orogenic belt is the integration of mixed materials due to the superposition, displacement
or loss of various tectonic slices (blocks) of different origins and environments, different scales, different grades of deformation
and metamorphism, and different stages of tectonic evolution. The approach to non-Smith strata in an orogenic belt is to focus
on the understanding of the age, facies, tectonic setting of the original formation and the process of deformation-metamorphism
of each tectonic slice, reconstruct the history of dispersal and integration of these tectonic slices in time and space, i.e.
4-dimensional. This paper studies the age and facies of the original formation of tectonic slices in the A’nyêmaqên melange
belt based on new data of radiolarians, sporo-pollen and trace fossils, and cast new lights on the research of the evolution
process of that belt. |
