Sea level changes are one of important controlling factors for cyclic sedimentation. In cratonic coastal plane settings, depositional environments in the vicinity of the shoreline are very easy to be influenced by sea level changes, resulting in obvious cyclic sedimentation, while depositional environments far away from the shoreline, either landward or seaward, don't vary much with sea level changes. As a result, cyclicity in the shoreline area shows higher frequency than those in the area far away from the shoreline. Generally, the shoreline area is the favorable site for coal accumulation, so the area with the maximum number of depositional cycles is the coal accumulation center. Therefore, in a cycle frequency curve, the maximum frequency is corresponding to the coal accumulation center. However, location of this maximum frequency varies from lowstand, transgressive to highstand sequence sets in a third-order sea level change. This variation allows us to identify migrating regularity of the coal accumulation center. According to high-resolution sequence stratigraphic analyses, the late Permian of western Guizhou is subdivided into 3 third-order composite sequences and 15 fourth-order sequences, and each third-composite sequence is composed of lowstand, transgressive and highstand systems tracts. In this paper, cycle frequency curves corresponding to different sequence sets and different composite sequences are reconstructed and migrating regularity of the coal accumulation center are analyzed.
About author: Hao Liming, born in 1973, has received his MSc at Petroleum University (Beijing) in 1998, and is currently a PhD student at China University of Mining and Technology, working on sedimentology and sequence stratigraphy.
Cite this article:
. THE APPLICATION OF DEPOSITIONAL CYCLE FREQUENCY CURVE TO EPISODIC COAL ACCUMULATION: WITH AN EXAMPLE FROM THE UPPER PERMIAN IN SOUTHWESTERN CHINA[J]. JOURNAL OF PALAEOGEOGRAPHY, 2000, 2(4): 12-19.
. THE APPLICATION OF DEPOSITIONAL CYCLE FREQUENCY CURVE TO EPISODIC COAL ACCUMULATION: WITH AN EXAMPLE FROM THE UPPER PERMIAN IN SOUTHWESTERN CHINA[J]. JOPC, 2000, 2(4): 12-19.
[1] Arditto P A. A sequence stratigraphic analysis of the Late Permian succession in the Southern Coalfield, Sydney Basin, New South Wales. Australian Journal of Earth Sciences, 1991, 38: 125~137
[2] Aitken J F, Flint S S. The application of high resolution sequence stratigraphy to fluvial systems: a case study from the Upper Carboniferous Breathitt Group, eastern Kentucky, USA. Sedimentology, 1995, 42: 3~30
[3] Flint S S, Aitken J F, Hampson G. Application of sequence stratigraphy to coal-bearing coastal plain successions: implications for the UK coal measures, in Whateley M K G, Spears D A eds. European Coal Geology. Geological Society, London, Special Publication 1995, No.82: 1~16
[4] 邵龙义，张鹏飞，刘钦甫，郑茂杰. 湘中下石炭统测水组沉积层序及幕式聚煤作用，地质论评，1992，38(1): 52~59
[5] Shao Longyi, Hao Liming，Yang Lijun, Zhang Pengfei and Tian Baolin. High resolution sequence stratigraphy of the Late Permian coal measures in southwestern China. In Xie H and Golosinski T S eds. Mining Science and Technology '99. A.A.Balkema, Rotterdam. 1999, 239-242
[6] 邵龙义, 张鹏飞. 广西合山地区上二叠统的沉积间断和旋回特征，煤炭学报，1992，17(3): 19~26
[7] McCabe P J. Depositional models of coal and coal-bearing strata. In: Rahamani R A and Flores R M eds. Sedimentology of Coal and Coal-bearing Sequences. International Association of Sedimentologists, Special Publication, 1984, 7: 13~42
[8] Diessel C F K. Coal-bearing depositional systems--coal facies and depositional environments, New York, Springer-verlag, 1992
[9] 邵龙义，张鹏飞，田宝霖，谢晓东，刘崇荣. 黔西织纳地区晚二叠世含煤岩系层序地层及海平面变化，地学探索，1993, 第8辑: 1~10
[10] Aitken J F. Coal in a sequence stratigraphic framework. Geoscientist, 1994, 4(5): 9~12
[11] 田宝霖, 张鹏飞, 邵龙义, 金奎励, 任德贻, 梅美棠. 川南、黔西、滇东晚二叠世煤田分布规律与沉积环境中国矿业大学内部研究资料，1990
