NIGPAS OpenIR
Stage-progressive distribution pattern of the Lungmachi black graptolitic shales from Guizhou to Chongqing, Central China
Chen Xu1; Fan Junxuan2; Wang Wenhui3; Wang Hongyan4; Nie Haikuan5; Shi Xuewen6; Wen Zhidong7; Chen Dongyang2; Li Wenjie1
2017
Source PublicationScience China. Earth Sciences
ISSN1674-7313
Volume60Issue:6Pages:1133
AbstractThe Lungmachi Formation is widely distributed in Guizhou, Chongqing and the adjacent area. It is important for the study of Silurian biostratigraphy and shale-gas investigation. Based on those biostratigraphically well-studied sections from Guiyang to Huayingshan, we reveal the stage-progressive distribution pattern of the Lungmachi black shales. The distribution of the Lungmachi black shales in the studying area can be subdivided into four geographic belts from the south to the north, reflecting the joint effect of regional and global environmental changes. The graptolite depth zonation model was adopted herein to infer the water depth of major graptolite assemblages from the black shales. The changes in the water depth indicate two major stages. The first stage is named the transgressive distribution stage which ranged from the Persculptograptus persculptus Biozone (LM1, upper Hirnantian) to the Coronograptus cyphus Biozone (LM5, upper Rhuddanian), an interval mostly controlled by global sea-level rise. The second stage, ranging from the Demirastrites triangulatus Biozone (LM6, lower Aeronian) to the Spirograptus guerichi Biozone (LM9, lower Telychian), is named the regressive shrinking stage, during which the black shales were gradually replaced by mixed-facies or carbonate sediments from the south to the north, representing the effects of the persistent uplifting of the Central Guizhou Oldland.
Language英语
Funding Project[Chinese Academy of Sciences] ; [National Natural Science Foundation of China]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/27054
Collection中国科学院南京地质古生物研究所
Affiliation1.中铁一局集团第五工程有限公司
2.中国科学院南京地质古生物研究所
3.南京大学
4.Langfang Branch, Research Institute of Petroleum Exploration & Development, PetroChina
5.Research Institute of Petroleum Exploration & Development, PetroChina
6.Research Institute of Exploration and Development, Southwest Oil & Gas Field Company, PetroChina
7.Southern Company of SINOPEC Exploration
Recommended Citation
GB/T 7714
Chen Xu,Fan Junxuan,Wang Wenhui,et al. Stage-progressive distribution pattern of the Lungmachi black graptolitic shales from Guizhou to Chongqing, Central China[J]. Science China. Earth Sciences,2017,60(6):1133.
APA Chen Xu.,Fan Junxuan.,Wang Wenhui.,Wang Hongyan.,Nie Haikuan.,...&Li Wenjie.(2017).Stage-progressive distribution pattern of the Lungmachi black graptolitic shales from Guizhou to Chongqing, Central China.Science China. Earth Sciences,60(6),1133.
MLA Chen Xu,et al."Stage-progressive distribution pattern of the Lungmachi black graptolitic shales from Guizhou to Chongqing, Central China".Science China. Earth Sciences 60.6(2017):1133.
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