THE STRATIGRAPHIC CORRELATION OF THE UPPER PRECAMBRIAN OF SOUTHERN LIAONING WITH THAT OF SOUTHERN JILIN, JIANGSUANHUI AND NORTHERN KOREA

The upper Precambrian of southern Liaoning display similarities to that of southern Jilin, Jiangsu-Anhui and northern Korea with respect to the features of corresponding lithostratigraphic units, biostratigraphic units and magnetostratigraphic units. For example, the Nanfen Formation in southern Liaoning and southern Jilin and the Liulaobei Formation in northern JiangsuAnhui are both represented by shale and yield macro-algae such as chuaria. Although no macro-alga fossils have been found in the Wufengli Formation of northern Korea, its lithology is shale too. The conglomerate at the base of the Getun Formation at the top of the Jinxian Group in southern Liaoning is glacio-eolian deposits, which are lithologically and stratigraphically consistent with the Fenglai and Luoquan Formations and the tills of Feilangdong in northern Jiangsu-Anhui. The reverse polarity epoch at Qiaotou of southern Liaoning is in agreement with that at Shouxian of northern Jiangsu-Anhui, both being marked by quartzite. In summary, the upper Precambrian of southern Liaoning is consistent with that of southern Jilin, Jiangsu-Anhui and northern Korea in respect to the structure of the sedimentary section and the lithology of corresponding lithostratigraphic units, and both yield the same macro-alga assemblage and stromatolite assemblage and have the same reverse polarity epochs, allowing a layer-by-layer correlation, so they are synchronous sediments deposited in a sedimentary basin controlled by the same regional tectonic setting.