Correlation of stratigraphic features in regional sequence stratigraphic framework in the Paleogene of Jiyang Depression
Su Zongfu Deng Hongwen Tao Zongpu Lin Huixi Qi Luning Zhou Chuanxun Qu Jian
1 China University of Geosciences, Beijing 100083
2 Geological Science Research Institute of Shengli Oilfield Company Ltd., SINOPEC, Dongying 257015, Shandong
3 Shengli Oilfield Company Ltd., SINOPEC, Dongying 257015, Shandong
4 Henan Oilfield Company Ltd., SINOPEC, Nanyang 473132, Henan
According to the comprehensive research achievements of stratigraphy such as biostratigraphy, magnetostratigraphy (ESR dating method), seismic stratigraphy and sequence stratigraphy and by means of the recognition of regional isochronous sequence boundaries, the analysis on boundary orders and the correlation of boundary properties in the faulted basin, a regional isochronous sequence framework of the Paleogene in Jiyang Depression is established on the basic unit of third-order sequences. Then the analysis on the comparison of all second-order sequences and major subtle reservoirs which were developed in the third-order sequences in the four sub-depressions of the Jiyang Depression shows that the second-order sequences are directly controlled by tectonic episodes, therefore, they are similar in characteristics. The cyclicity of major third-order sequence stratigraphic framework coincides to each other among the four sub-depressions, with the marker sediments developed in the same or similar cycle positions. However, the third-order sequence boundary properties of T2, T4, and T6 are apparently different among different sub-depressions. According to the sequence genesis dynamics, the consistency of cycle properties and the difference of boundary properties indicate respectively that the sedimentary environments control the sediment types in the same sequence stratigraphic framework and the migration of tectonic depocenters and sedimentary centers in the Bohai Bay Basin controls the sequence boundary properties.
About author: Su Zongfu, born in 1975,was graduated from China University of Geosciences (Wuhan) in 2000,and obtained M.S. degree from China University of Geosciences(Beijing)in 2003. Now he is a candidate for Ph.D. degree in China University of Geosciences(Beijing)and is engaged in sequence stratigraphy and evaluation of petroleum accumulation systems. E-mail:asmby@163.com.
Cite this article:
. Correlation of stratigraphic features in regional sequence stratigraphic framework in the Paleogene of Jiyang Depression[J]. JOURNAL OF PALAEOGEOGRAPHY, 2006, 8(1): 89-102.
. Correlation of stratigraphic features in regional sequence stratigraphic framework in the Paleogene of Jiyang Depression[J]. JOPC, 2006, 8(1): 89-102.