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METAMORPHIC STRATIGRAPHIC FRAMEWORK IN THE EASTERN PART OF THE DABIE MT.

JIANG Lai-li;HU Shao-qi;Institute of Geological Survey of Anhui Province;  
As shown in 1:50000 regional geological survey finished in the Dabie Mt area at the end of 1980s and thereafter, meso-and hypo-metamorphic complex was decomposed into two parts--metamorphic and deformed intrusion and metamorphic supercrustal rock in the area, however, most of the established structures and rocks/ stratigraphic units continued to follow the stratigraphic titles of 1:200000 regional geological survey. In the same period, geological research made since discovery of ultrahigh-pressure metamorphic rock in the Dabie Mt disclosed that the bulk of meso- and hypo-metamorphic rock is orthogneiss, which is divided into 4 structural units by metamorphic features and structural attribute. Based on previous geological survey and research results, this paper classified metamorphic strata into 4 lithostratigraphic(tectono-lithostratigraphic, tectono-litho) units, and 3 informal litho-stratigraphic untis in the Dabie Mt, discussed their comparison with stratigraphic units divided by regional geological survey, and their relations with the said 4 structural units.
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