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Zhihong Ma, Jilin University (China)
Yongjiang Liu, Jilin University (China)
Guoqing Han, Jilin University (China)
Quanbo Wen, Jilin University (China)
Xiaomeng Sun, Jilin University (China)
Linna Wu, Jilin University (China)
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There are many Mesozoic-Cenozoic small basins in the Northeast China. Huanan-Uplift is located within these basins (Fig 1). The relationships between Huanan-Uplift and the surrounding basins, such as Sanjiang Basin, Hulin Basin, Boli Basin, Jixi Basin, Shuangyashan Basin and Shuanghua Basin, are playing an important role in the regional oil and gas resources exploration and development. However previous research works were mainly focused on stratigraphy and paleontology. The relationships between Huanan-Uplift and the surrounding basins have been studied according to the field investigations and statistics of the pebble compositions from the conglomarates of Houshigou Formation.
The researches of regional stratigraphic correlation and marine fossils suggest that these basins experienced the same evolution, and underwent one or more times transgressions during the period of Chengzihe and Muling Formations. indicate that the area should be a large-scale basin as a whole. The present basin boundary thrust faults and geophysical MT profiles across the basins and Huanan-Uplift show that the present isolated basins were formed by the breaking of a large-scale basin which were probably a continental marginal offshore basin as a whole during the period of Chengzihe and Muling Formations. Meanwhile, the Huanan-Uplift did not exist. Base on the directions of paleocurrent, sandstone provenance analysis and gravel composition Statistics, It reveals that Huanan-Uplift were uplifted after the depositing of Dongshan Formation (late the Early Cretaceous), and supplied the sediments for the surrounding basins during the period of Houshigou Formation (early the Late Crtaceous), and the present basin-range topography appeared in the northeastern Heilongjiang Province.
This study was funded by grants from the Natural Science Foundation of China (40739905).
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