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1 J uly, 2009 J OURNAL OF STRA TIGRAP H Y 33 3 Vol. 33 No. 3 1) 2) 1) 1) 1) 1) 3) 1) ; 2) ; 3) : 5,, 9,/, :,,,,,, : P :A : (2009) (,1999 ;,1999 ;,2000 ;,2001 ;, 2005 ;,2005 ;,2005),,,,, 1 000m, m, (, 1992 ;, 1993 ;,1995 ;,1996) ( 1), ( ), 90 %, 500m, /, 1 (,1987, ) Fig. 1 Sketch map showing tectonics in the West Sichuan Foreland Basin,,,, ( P03044) : ; : :1976,,,,,

2 3 : 319,,,,,,, : 1,,,,,,,,, ( ),,,, 2,,,,,,, 4 22 :, ; ; 3, ( ), 5 ( 1), ( W. E. Galloway,1989) (, ),,,,, (,1955 ;,1985 ;,1999 ;,2004), 1,,, :

3 Tab. 1 Sequence stratigraphic division of the Penglaizhen Formation ;,,,,, ( ) ( ),,,,,,,,,,,,,, ( ),,,,,,,,,, 2,,,, SQ1 SQ5 : SQ1 SQ1 SQ2 SQ2 SQ3 SQ3 SQ4

4 3 : 321 SQ4 SQ SQ1 SQ1,,,,,, SQ1, SQ1 SQ1 N E SW, ( ) ( 2), ;,,, 3,,, 2,, 2 SQ1 Fig. 2 Lithofacies and paleogeography of prograding systematic domain within sequence SQ1 in the SQ1 1 ( 4),,,, 20km,, N E SW ( 3) 3 SQ1 Fig. 3 Lithofacies and paleogeography of retrograding systematic domain within sequence SQ1 in the 2. 2 SQ2 SQ2, 4m ( 0. 5m ), m, 7. 35m, m,,,,,,, SQ1,SQ2, 500m SQ2,, 2,,, SQ2,

5 322 33, SQ2, SQ2,,, ( 5),, ( 6) SQ3 SQ1, SQ2 ( 7), 4 SQ2 Fig. 4 Lithofacies and paleogeography of prograding systematic domain within sequence SQ2 in the 6 SQ3 Fig. 6 Lithofacies and paleogeography of prograding systematic domain within sequence SQ3 in the 5 SQ2 Fig. 5 Lithofacies and paleogeography of retrograding systematic domain within sequence SQ2 in the 2. 3 SQ3 SQ3, 2m SQ3,,,, 20 50km 7 SQ3 Fig. 7 Lithofacies and paleogeography of retrograding systematic domain within sequence SQ3 in the 2. 4 SQ4 SQ4 1994,,,, 0. 5m

6 3 : 323, SQ4,,,,,,,, SQ2 ( 8) SQ4,,, ( 9) 2. 5 SQ5 SQ5,, 2. 7m, 2 5m, 7 10m,,, 4. 24m 5 6cm,, SQ5, SQ5,, 300m SQ5,,,,,, ( 9), 8 SQ4 Fig. 8 Lithofacies and paleogeography of prograding systematic domain within sequence SQ4 in the 10 SQ5 Fig. 10 Lithofacies and paleogeography of prograding systematic domain within sequence SQ5 in the 9 SQ4 Fig. 9 Lithofacies and paleogeography of retrograding systematic domain within sequence SQ4 in the 1 5, 5,

7 , :1), SQ1,,, SQ5, SQ5 2),, 10 /,, 3,,,,,,,,, , 17 (4) : ,, : ,,,, , 21 (2) : ,,,, , 27 (3) : ,, : : : : ,,,,, , 26 (1) : , 14 (3) : : ,, , 23 (10) :1 4,, , 20 (1) : , 19 (4) :40 46,,,, , 25 ( A) :41 44,,,,, , 32 (4) : Chen Hong2de, Qin Jian2xiong, Wang Cheng2shan et al Se2 quence2based lithofacies and paleogeographic characteristics and evolution of Permian in Sout h China. S inica, 17 (4) : A cta Sedimentologica Galloway W E Genetic stratigraphic sequence in basin analy2 sis 1 : architecture and genesis of flooding2surface bounded depo2 sitional unit s. A A PG B ull, 73 : Guo Zheng2wu, Deng Kang2ling, Hang Yong2hui et al For2 mation and evolution of Sichuan basin. Beijing : The Geological Publishing House He Li, Liu Mei2qing, He Zhi2guo, Zhou Zhi2jun & Zhang Shu2bin Sedimentary sequence characteristics and favorable reser2 voir facies2tract prediction for t he Penglazhen Formation of West Sichuan and adjacent areas. Petroleum Geology & Ex per2 iment, 21 (2) : Hu Xiao2qiang, Chen Hong2de, Ji Xiang2tian, Lin Liang2biao Zhang Wen2lin The J urassic delta deposit system tract and sedimentation model in the, Pet roleum Geology & Ex periment, 27 (3) : Li Yong, Zeng Yun2fu & Yi Hai2sheng Sedimentary and tec2 tonic evolution of the Longmenshan Foreland Basin, western Si2 chuan, China. Chengdu : Press of Chengdu University of Sci2 ence and Technology Liu Hong2yun Atlas of the palaeogeography of China. Bei2 jing : The Geological Publishing House Liu Shu2gen The formation and evolution of Longmenshan Thrust Zone and Western Sichuan Foreland Basin, Sichuan, China. Chengdu : Press of Chengdu University of Science and Technology Wang Hong2zhen et al Atlas of the palaeogeography of Chi2 na. Beijing : Science Press Tian Jing2chun, Chen Hong2de, Qin Jian2xiong, Hou Zhong2jian, Hou Ming2cai & Peng J un Case study of sequence based lithofacies2paleogeography research and mapping of South Chi2 na. J ournal of Earth Sciences and Envi ronment, 26 (1) :6 12 &

8 3 : 325 Tong Chong2guang Relationship between deep process and structure evolution of sedimentary cover and distribution of gas pools in southeastern Sichuan,China. J ournal of Chengdu Col2 lege of Geolog y, 14 (3) :83 93 Tong Chong2guang Structural evolution and hydrocarbon ac2 cumulation in Sichuan Basin. Beijing : The Geological Publish2 ing House Xu Qiang, Zhu Tong2xing & Mou Chuan2long Sequence2pa2 leogeographic mapping of Upper Triassic Xujiahe Formation and Upper J urassic Penglazhen Formation in West Sichuan. J ournal of S outhwest Pet roleum I nstitute, 23 (10) :1 4 Ye Mao2cai, Yi Zhi2qiang & Li Jian2bo Distribution rule of sedimentary system of the Upper J urassic Penglaizhen Forma2 tion in West Sichuan Sag. J ournal of Chengdu University of Technology, 20 (1) :54 58 Yin Shi2ming The characteristics of tectontic2filling se2 quences of Penlaizhen in West Sichuan Depression, J ournal of Mineralogy and Pet rology, 19 (4) :40 46 Zhang Wen2lin, Zhang Shao2nan, Chen Hong2de, Ji Xiang2tian & Hu Xiao2qiang Sequence stratigraphical characteristics of J urassic in t he Nort h part of West Sichuan. N atural Gas I n2 dust ry, 25 (Supp. A) : Zhao Yong2gang, Chen Jing2shan, Lei Bian2jun, Jiang Yu2qiang, Wang Shen2jian & Xu Dan2zhou Analysis of high2reso2 lution sequence stratigraphy of the Upper J urassic Penglaizhen Formation in the Baimamiao Gas Field, Qionglai County,West2 ern Sichuan. Chinese Geology, 32 (4) : SEQUENCE2BASED L ITHOFACIES AND PAL EO GEOGRAP HIC CHARACTERISTICS AND EVOL UTIO N OF THE PENGLAIZHEN FORMATIO N IN WEST SICHUAN FORELAND BAISN ZHU Zhi2jun 1) 2), CH EN Hong2de 1), L IN Liang2biao 1), HU Xiao2qiang 1), XU Sheng2lin 1) and ZHAN G Ge 3) 1) I nstitute of S edimentary Geology, Cheng du Universit y of Technolog y, Cheng du ; 2) East China I nstitute of Technolog y, Fuz hou ; 3) Zhong y uan Oil f iel d B ranch Com pany, Puy ang Abstract Based on sedimentary sequences, t he Penglaizhen Formation in west Sichuan Foreland Basin is divided into five sedimentary sequences, each sequence co nsisting of a p rograding and a ret ro grading sys2 tem do main. Nine sequence based lit hofacies and paleogeograp hic map s of Penglaizhen Formatio n in t he western Sichuan Foreland Basin were recognized and used as mapping unit s. The result s show t hat t he pa2 leogeograp hic evolutio n of t he Penglaizhen Formatio n included multiple basin expansio n and reductio n p hap ses, earch showing evidence of inheritance, heterogeneity, and synchronism. Compared wit h tradition2 al lithofacies and paleogeograp hy map s sequence2based lithofacies and paleogeograp hy map s are based on genetic successio ns and have distinct advantages of showing basin dynamics, facilitatingaccurate st rati2 grap hic correlation, and aiding petroleum exploration. Key words sequence stratigrap hy, lit hofacies and paleogeograp hy map, prograding systematic domain, retrograding system domain, Penglaizhen Formation, J urassic, Sichuan

( 1) ; 6 5 [ 3 ] S1 S2 1 Fig. 1 Seismic sequence prof ile framework of Wuliyasitai Sag S1 () ( 2) S2 ( ) Ο 2 S1 Fig. 2 Sedimentary fa

( 1) ; 6 5 [ 3 ] S1 S2 1 Fig. 1 Seismic sequence prof ile framework of Wuliyasitai Sag S1 () ( 2) S2 ( ) Ο 2 S1 Fig. 2 Sedimentary fa 27 3 2006 5 ACTA PETROL EI SIN ICA Vol. 27 No. 3 May 2006 : 0253Ο2697 (2006) 03Ο0027Ο05 1 2 2 2 (11 610059 ; 21 062552) : 2 ; : ; ;; ;; : TE1111 3 : A Forming pattern and distribution features of hydrocarbon