Discovery of eclogites in the Qichun areas in the southernslope of the Dabie Mountains and some related problems

In the early to middle 1990s, the outcrop area of the Dabie complex in the interior of the Dabie Mountains was divided into three tectonic units of different natures: the northern Dabie terrane (or migmatite unit), central UHP terrane (or eclogite unit) and Susong terrane (or amphibolite unit) based on whether eclogites are exposed, of which the northern Dabie and Susong terrane were regarded as the units containing no eclogites. However, many eclogite outcrops have been found successively in the northern Dabie terrane since the late 1990s, and recently the authors have also found eclogite outcrops in the Susong terrane. It shows that it is not advisable for the predecessors to divide the Dabie complex into three tectonic units, and that the three units of the Dabie complex should be genetically related and belong to the same tectonic-rock unit and thus should be merged into one tectonic unit.