Ophiolite complex:a reconnaissance application of non Smith stratigraphic study to 1:50 000 geological mapping

With the experience of Geyuan sheet 1∶50 000 geological mapping in the ophiolite complex in the northeast Jiangxi province,the authors put forward a proposal for non Smith stratigraphic study in geological mapping in similar areas.The study includes:(1) field reconnaissance and reinterpretation of previous data,thereafter subdivision of the stratigraphic units;(2) distinguish of adventitious rock blocks and matrixes;(3) selection of target area for detailed study of composition,paleontology and isotopes to gain data on age and tectonic setting;(4) identification of the rock blocks,matrixes and the association to non Smith stratigraphic units,and determination of timing of the tectonic emplacement;(5) re establishing stratigraphic sequence and interpreting the tectonic evolution history.