Silurian Sequence Stratigraphy of Upper Yangtze Region, China

Chen Jianqiang; Li Zhiming; Gong Shuyun; Li Quanguo; Su Wenbo

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Article Navigation > Acta Sedimentologica Sinica > 1998 > 16(3): 58-65

Chen Jianqiang, Li Zhiming, Gong Shuyun, Li Quanguo, Su Wenbo. Silurian Sequence Stratigraphy of Upper Yangtze Region, China[J]. Acta Sedimentologica Sinica, 1998, 16(3): 58-65.

Citation:

Chen Jianqiang, Li Zhiming, Gong Shuyun, Li Quanguo, Su Wenbo. Silurian Sequence Stratigraphy of Upper Yangtze Region, China[J]. Acta Sedimentologica Sinica, 1998, 16(3): 58-65.

Silurian Sequence Stratigraphy of Upper Yangtze Region, China

1.
Department of Geology and Mineral Resources, China University of Geosciences, Beijing 100083;
2.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074

Received Date: 1997-05-10
Rev Recd Date: 1997-09-18
Publish Date: 1998-12-10

Abstract

The northeastern Guizhou and the eastern Yunnan are located on the Upper Yangtze Platform. The present study on seven sections in the region has established nine 3rd order sequences from the Llan-dovery (439 Ma) to the Pridoli (409 Ma), with an average duration of 3.3 Ma. The nine 3rd order se-quences have constituted two 2nd order sequences. The first sequence consists of Longmaxi Fm. and Xi-angshuyuan Fm., extending chronologically from Rhuddanian to Early Telychian, with a distinct type-Ⅰ sequence boundary at the bottom. Basinward, the bottom boundary shows as continuity at Tongzi belong-ing to Gui zhou, while landward to the central Gui zhou old land it becomes an overlap disconformity. Two 3rd order sequences have been recognized in the Lei jiatun Fm. The Majiaochong Fm. (TST) and Rongxi Fm. (HST) make up the fourth sequence. The fifth and the sixth sequences are represented by the Xiushan Fm. and Huixingshao Fm. respectively. The sequence boundary between them, however, is notconcurring with the boundary of the formations. The second to fifth sequences are within the Telychian, and the sixth sequence is early Sheinwoodian in age. The seven to the ninth sequences are represented by the Guandi Fm. the Miaogao Fm. and the Yulongsi Fm. extending chronologically from the Homerian stage belonging to Wenlock to Pridoli. The first sequence and the seventh sequence among these nine se-quences are type-Ⅰ sequences, the others type-Ⅱ sequences. The above mentioned nine sequences are basically controlled by eustatic changes. Owing to the ef-fects of the Caledonian movement, the steady uplifting of the Yangtze Platform during Silurian had ap-parent lyexerted an influence on the formation and the characters of the sequences. From the bottom up-ward, in each of the 3rd order sequences, the ratio of siliciclastics increases continuously with a corre-sponding increase in the thickness of sequence. In all of the third-order sequences, TST and HST are well displayed, but without LST and SMST.
- sequence stratigraphy,
- sea-level change,
- Silurian,
- Upper Yangtze region,
- China

References

[1]	.Vail P R, Mitchum R M Jr, Thompson S Ⅲ. Seismic stratgrphy and global changes of sea level, part 4: global cycles of relative changes of sea level. In: Payton C E, ed. Seismicstratig raphy-applications to hydrocarbon exploration. AAPG Memoir, 1997, 26: 51～52
[2]	.Vail P R, Hardenbol J. Sea-level changes during the Tertiary. O-ceans, 1979, 22: 71～79
[3]	.Hardenbol J, Vail P R, Ferrer J. Interpreting paleoenviron-ments, subsidence history, and sea level changes of passive mar-gins from seismic and biostratigraphy. Oceanologica Acta, 1981, 3(Supplement): 334～344
[4]	.Cisne J L, Gildner R F, Rabe B D. Epiric sedimentation and sea level synthetic ecostratigraphy. Lethaia, 1984, 17: 267～288
[5]	.龚联瓒. 关于贵州北部和黔东南志留系岩石地层划分和统一问题. 贵州地质, 1990, 7(4): 313～323
[6]	.陈建强, 何心一. 扬子区奥陶纪和志留纪四射珊瑚动物群及组合带. 地球科学, 中国地质大学学报, 1997, 22(1): 15～19
[7]	.Wang Hong zhen and He Xinyi. Silurian rugose coral assem-blages and palaeobiogeography of China. Geol. Soc. Amer. Spec. Pap., 1981, 187: 55～63
[8]	.王鸿祯, 何心一. 中国志留纪四射珊瑚组合及生物古地理分区 . 中国古生物地理区系. 北京: 科学出版社 , 1983. 32～42
[9]	.戎嘉余. 论我国志留系的建阶问题. 地层学杂志, 1985, 9(2): 96～107
[10]	.戎嘉余. 国际志留系研究的新进展. 地层学杂志, 1986, 10(3): 238～242
[11]	.戎嘉余, 陈旭, 王成源等. 论华南志留系对比的若干问题. 地层学杂志, 1990, 14(3): 161～171
[12]	.方润生, 江能人, 范健才等. 云南曲靖地区中志留世—早泥盆世地层及古生物. 昆明: 云南人民出版社, 1985. 1～171
[13]	.贵州省地质矿产局. 贵州省区域地质志. 北京: 地质出版社, 1987. 1～454
[14]	.中国科学院南京地质古生物研究所. 西南地区地层古生物手册. 北京: 科学出版社, 1974. 1～454
[15]	.戎嘉余, 马科斯. 约翰逊, 杨学长. 上扬子区早志留世 (兰多维利世)的海平面变化. 古生物学报, 1984, 23(6): 672～693
[16]	.Johnson M E, Rong Jiayu, Yang Xuechang. International corre-lation by sea-level events in the Early Silurian of Nortrh Ameri-ca and China (Yangtze Platform). Geol. Soc. Amer. Bull., 1985, (96): 1384～1397
[17]	.陈旭, 戎嘉余. 亚洲东部的志留系. 现代地质, 1988, 2(3): 328～341
[18]	.周名魁, 王汝植, 李志明等. 中国南方奥陶—志留纪岩相古地理与成矿作用. 中国南方岩相古地理系列丛书. 北京: 地质出版社, 1993. 1～111
[19]	.梅冥相. 贵州南部志留纪沉积盆地分析. 贵州地质, 1990, 7(4): 324～332
[20]	.Chen Jianqiang, Li Zhiming, Gong Shuyun, et al. Early Silurian sequence stratigraphy of north eastern Guizhou, China. 30th In-ternational Geological Congress (Beijing), Abstracts, 1996, 2(3): 32
[21]	.陈建强, 何心一. 上扬子区下志留统四射珊瑚组合带与层序地层序列的关系. 现代地质—中国地质大学研究生院学报, 1997, 11(1): 1～9
[22]	.单卫国, 罗刚, 巫正国. 滇东曲靖地区志留系层序地层特征和年代地层界线再讨论. 地层学杂志, 1997, 21(1): 68～76
[23]	.Mackerrow W S. Ordovician and Silurian changes in sea level. Geological Society of London Journal, 1979, 136: 137～145
[24]	.Ross C A, Ross J R P. Late Palaeozoic transgressive-regressive deposition. In: Wilgus C K, Hasti ngs B S, Posamentier H W, et al, eds. Sea-level changes: An Integrated Approach. Society of Economic Paleontologists and Mineralogists Special Publica-tion, 1988, 42: 227～247
[25]	.Breet C E, Goodman W M, LoDuca S T. Sequences, cycles and basin dynamics in the Silurian of the Appalachian Foreland Basin. Sedimentary Geology, 1990, 69: 191～244

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Silurian Sequence Stratigraphy of Upper Yangtze Region, China

1. Department of Geology and Mineral Resources, China University of Geosciences, Beijing 100083;

2. Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074

Received Date: 1997-05-10

Rev Recd Date: 1997-09-18

Publish Date: 1998-12-10

Key words:

Abstract: The northeastern Guizhou and the eastern Yunnan are located on the Upper Yangtze Platform. The present study on seven sections in the region has established nine 3rd order sequences from the Llan-dovery (439 Ma) to the Pridoli (409 Ma), with an average duration of 3.3 Ma. The nine 3rd order se-quences have constituted two 2nd order sequences. The first sequence consists of Longmaxi Fm. and Xi-angshuyuan Fm., extending chronologically from Rhuddanian to Early Telychian, with a distinct type-Ⅰ sequence boundary at the bottom. Basinward, the bottom boundary shows as continuity at Tongzi belong-ing to Gui zhou, while landward to the central Gui zhou old land it becomes an overlap disconformity. Two 3rd order sequences have been recognized in the Lei jiatun Fm. The Majiaochong Fm. (TST) and Rongxi Fm. (HST) make up the fourth sequence. The fifth and the sixth sequences are represented by the Xiushan Fm. and Huixingshao Fm. respectively. The sequence boundary between them, however, is notconcurring with the boundary of the formations. The second to fifth sequences are within the Telychian, and the sixth sequence is early Sheinwoodian in age. The seven to the ninth sequences are represented by the Guandi Fm. the Miaogao Fm. and the Yulongsi Fm. extending chronologically from the Homerian stage belonging to Wenlock to Pridoli. The first sequence and the seventh sequence among these nine se-quences are type-Ⅰ sequences, the others type-Ⅱ sequences. The above mentioned nine sequences are basically controlled by eustatic changes. Owing to the ef-fects of the Caledonian movement, the steady uplifting of the Yangtze Platform during Silurian had ap-parent lyexerted an influence on the formation and the characters of the sequences. From the bottom up-ward, in each of the 3rd order sequences, the ratio of siliciclastics increases continuously with a corre-sponding increase in the thickness of sequence. In all of the third-order sequences, TST and HST are well displayed, but without LST and SMST.

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Reference (25)

[1]	.Vail P R, Mitchum R M Jr, Thompson S Ⅲ. Seismic stratgrphy and global changes of sea level, part 4: global cycles of relative changes of sea level. In: Payton C E, ed. Seismicstratig raphy-applications to hydrocarbon exploration. AAPG Memoir, 1997, 26: 51～52
[2]	.Vail P R, Hardenbol J. Sea-level changes during the Tertiary. O-ceans, 1979, 22: 71～79
[3]	.Hardenbol J, Vail P R, Ferrer J. Interpreting paleoenviron-ments, subsidence history, and sea level changes of passive mar-gins from seismic and biostratigraphy. Oceanologica Acta, 1981, 3(Supplement): 334～344
[4]	.Cisne J L, Gildner R F, Rabe B D. Epiric sedimentation and sea level synthetic ecostratigraphy. Lethaia, 1984, 17: 267～288
[5]	.龚联瓒. 关于贵州北部和黔东南志留系岩石地层划分和统一问题. 贵州地质, 1990, 7(4): 313～323
[6]	.陈建强, 何心一. 扬子区奥陶纪和志留纪四射珊瑚动物群及组合带. 地球科学, 中国地质大学学报, 1997, 22(1): 15～19
[7]	.Wang Hong zhen and He Xinyi. Silurian rugose coral assem-blages and palaeobiogeography of China. Geol. Soc. Amer. Spec. Pap., 1981, 187: 55～63
[8]	.王鸿祯, 何心一. 中国志留纪四射珊瑚组合及生物古地理分区 . 中国古生物地理区系. 北京: 科学出版社 , 1983. 32～42
[9]	.戎嘉余. 论我国志留系的建阶问题. 地层学杂志, 1985, 9(2): 96～107
[10]	.戎嘉余. 国际志留系研究的新进展. 地层学杂志, 1986, 10(3): 238～242
[11]	.戎嘉余, 陈旭, 王成源等. 论华南志留系对比的若干问题. 地层学杂志, 1990, 14(3): 161～171
[12]	.方润生, 江能人, 范健才等. 云南曲靖地区中志留世—早泥盆世地层及古生物. 昆明: 云南人民出版社, 1985. 1～171
[13]	.贵州省地质矿产局. 贵州省区域地质志. 北京: 地质出版社, 1987. 1～454
[14]	.中国科学院南京地质古生物研究所. 西南地区地层古生物手册. 北京: 科学出版社, 1974. 1～454
[15]	.戎嘉余, 马科斯. 约翰逊, 杨学长. 上扬子区早志留世 (兰多维利世)的海平面变化. 古生物学报, 1984, 23(6): 672～693
[16]	.Johnson M E, Rong Jiayu, Yang Xuechang. International corre-lation by sea-level events in the Early Silurian of Nortrh Ameri-ca and China (Yangtze Platform). Geol. Soc. Amer. Bull., 1985, (96): 1384～1397
[17]	.陈旭, 戎嘉余. 亚洲东部的志留系. 现代地质, 1988, 2(3): 328～341
[18]	.周名魁, 王汝植, 李志明等. 中国南方奥陶—志留纪岩相古地理与成矿作用. 中国南方岩相古地理系列丛书. 北京: 地质出版社, 1993. 1～111
[19]	.梅冥相. 贵州南部志留纪沉积盆地分析. 贵州地质, 1990, 7(4): 324～332
[20]	.Chen Jianqiang, Li Zhiming, Gong Shuyun, et al. Early Silurian sequence stratigraphy of north eastern Guizhou, China. 30th In-ternational Geological Congress (Beijing), Abstracts, 1996, 2(3): 32
[21]	.陈建强, 何心一. 上扬子区下志留统四射珊瑚组合带与层序地层序列的关系. 现代地质—中国地质大学研究生院学报, 1997, 11(1): 1～9
[22]	.单卫国, 罗刚, 巫正国. 滇东曲靖地区志留系层序地层特征和年代地层界线再讨论. 地层学杂志, 1997, 21(1): 68～76
[23]	.Mackerrow W S. Ordovician and Silurian changes in sea level. Geological Society of London Journal, 1979, 136: 137～145
[24]	.Ross C A, Ross J R P. Late Palaeozoic transgressive-regressive deposition. In: Wilgus C K, Hasti ngs B S, Posamentier H W, et al, eds. Sea-level changes: An Integrated Approach. Society of Economic Paleontologists and Mineralogists Special Publica-tion, 1988, 42: 227～247
[25]	.Breet C E, Goodman W M, LoDuca S T. Sequences, cycles and basin dynamics in the Silurian of the Appalachian Foreland Basin. Sedimentary Geology, 1990, 69: 191～244

Silurian Sequence Stratigraphy of Upper Yangtze Region, China

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References

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通讯作者: 陈斌, bchen63@163.com

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