Paleoecology of Early Ordovician Reefs in the Yichang Area, Hubei: a Correlation of Organic Reefs Between Early Ordovician and Jurassic

Xiao, Chen; Li, Meng; YANG, Wei; Hu, Mingzeng; Li, Chao

doi:10.1111/j.1755-6724.2011.00235.x

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Upper Ordovician consists of Miaopo Formation, Baota Formation, Linxiang Formation and Wufeng Formation. The Ordovician includes carbonate sediments, associated with reefs microbial carbonate [14], calcareous shales, with a total thickness of about 329 m. Among them, Wufeng Formation includes two Members, namely, Wufeng shale Member and Guanyinqiao Member. The former is mainly shale sediments, the latter is mainly composed of bioclastic limestone sediments, followed by sandstone and mudstone.…”

Section: Background and Research Methodsmentioning

confidence: 99%

A Discussion on Sedimentary Environment of the Guanyinqiao Member from the Upper Ordovician in Yangtze Area

Xiao¹,

Wenjun²,

Sun³

et al. 2018

OJOGas

Self Cite

View full text Add to dashboard Cite

Based on the comparison between the sedimentary rate of the Guanyinqiao Member and modern deep sea, as well as the analysis of paleoecology, biopalaeogeographic features, sea level changes and comprehensive sedimentary characteristics, it is demonstrated by the authors that the Guanyinqiao Member in the Yangtze area is formed in the deep sea environment and belongs to contourite facies. The relationship between the events and the mass extinction at the turn of Ordovician-Silurian is discussed. The authors believe that the high-frequency volcanic events, which are widely developed at that time, may be the main and direct cause of the extinction. The coupling effects of volcanic events, iridium and carbon isotope abnormities and the initial hypoxia events in the early Silurian may be the main cause of the extinction of the Hirnantia-Dalmanitina fauna.

show abstract

Section: Background and Research Methodsmentioning

confidence: 99%

A Discussion on Sedimentary Environment of the Guanyinqiao Member from the Upper Ordovician in Yangtze Area

Xiao¹,

Wenjun²,

Sun³

et al. 2018

OJOGas

Self Cite

View full text Add to dashboard Cite

show abstract

“…Many case studies are available in the literature (Golubic 1973(Golubic , 1976Zhang and Hofmann 1982;Hofmann 1987;Zhuravlev and Wood 1996;Feldmann Edited by Jie Hao and McKenzie 1997; Knoll and Semikhatov 1998;Myrow 2002;Riding 1991Riding , 2000Riding and Liang 2005;Rowland and Shapiro 2002;Kruse and Zhuravlev 2008;Hicks and Rowland 2009;Adachi et al 2011). The Lower Ordovician marine carbonate deposits in the Yangtze Plate developed continuously, and the associated microbialites and reefs are widely distributed (Zhu et al 1990(Zhu et al , 1995(Zhu et al , 2006Mei and Lu 1991;Li and Wu 2001;Yang 2018;Xiao et al 1993Xiao et al , 1995Xiao et al , 2004Xiao et al , 2011Adachi et al 2011;Wang et al 2012). During the Early Ordovician, the middle Yangtze platform was occupied by different types of microorganisms and metazoans at different times.…”

Section: Introductionmentioning

confidence: 99%

“…The formation of microbialites is linked to events such as environmental, climatic and sea-level changes. Researchers in China and elsewhere have undertaken considerable work on the Lower Ordovician microbialites and reefs, especially the latter (Zhu et al 1990(Zhu et al , 1995(Zhu et al , 2006Mei and Lu 1991;Li and Wu 2001;Yang 2018;Xiao et al 1993Xiao et al , 1995Xiao et al , 2004Xiao et al , 2011Adachi et al 2011;Wang et al 2012). However, the research has mainly focused on macroscopic feature description of stromatolites, and systematic research on stromatolites and other Ordovician microbialites is very rare.…”

Section: Introductionmentioning

confidence: 99%

“…However, the research has mainly focused on macroscopic feature description of stromatolites, and systematic research on stromatolites and other Ordovician microbialites is very rare. There is no systematic classification or detailed study on the microbialites in Lower Ordovician strata, and the successional relationships of microbialites in the strata have not been determined (Zhu et al 1990(Zhu et al , 1995(Zhu et al , 2006Mei and Lu 1991;Li and Wu 2001;Yang 2018;Xiao et al 1993Xiao et al , 1995Xiao et al , 2004Xiao et al , 2011Adachi et al 2011;Wang et al 2012). Furthermore, there are few studies on the relationship between the evolution of microbialites and the evolution of metazoans.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Petrography and origin of the Lower Ordovician microbial carbonates in the Songzi Area of Hubei Province, middle Yangtze region, China

et al. 2019

Self Cite

View full text Add to dashboard Cite

This study is the first systematic assessment of the Lower Ordovician microbial carbonates in Songzi, Hubei Province, China. This paper divides the microbial carbonates into two types according to growth patterns, namely nongranular and granular. The nongranular types include stromatolites, thrombolites, dendrolites, leiolites and laminites; the granular types are mainly oncolites and may include a small amount of microbiogenic oolite. According to their geometric features, the stromatolites can be divided into four types: stratiform, wavy, columnar and domal. Additionally, dipyramidal columnar stromatolites are identified for the first time and represent a new type of columnar stromatolite. The thrombolites are divided into three types: speckled, reticulated and banded. The grazing gastropod Ecculiomphalus and traces of bioturbation are observed in the speckled and reticulated thrombolites. This paper considers these two kinds of thrombolites to represent bioturbated thrombolites. These findings not only fill gaps in the field of domestic Ordovician bioturbated thrombolites but also provide new information for the study of thrombolites. Based on the analysis of the sedimentary characteristics of microbialites, the depositional environments of the various types of microbialites are described, and the distribution patterns of their depositional environments are summarized. The relationship between the development of microbialites and the evolution and radiation of metazoans during the Early to Middle Ordovician is discussed. Consistent with the correspondence between the stepwise and rapid radiation of metazoans and the abrupt reduction in the number of microbialites between the late Early Ordovician and the early Middle Ordovician, fossils of benthonic grazing gastropods (Ecculiomphalus) were found in the stromatolites and thrombolite of the study area. It is believed that the gradual reduction in microbialites was related to the rapid increase in the abundance of metazoans. Grazers not only grazed on the microorganisms that formed stromatolites, resulting in a continuous reduction in the number of stromatolites, but also disrupted the growth state of the stromatolites, resulting in the formation of unique bioturbated thrombolites in the study area. Hydrocarbon potential analysis shows that the microbialites in the Nanjinguan Formation represent better source rocks than those in the other formations.

show abstract

Paleoecology of Early Ordovician Reefs in the Yichang Area, Hubei: a Correlation of Organic Reefs Between Early Ordovician and Jurassic

Cited by 2 publications

References 0 publications

A Discussion on Sedimentary Environment of the Guanyinqiao Member from the Upper Ordovician in Yangtze Area

A Discussion on Sedimentary Environment of the Guanyinqiao Member from the Upper Ordovician in Yangtze Area

Petrography and origin of the Lower Ordovician microbial carbonates in the Songzi Area of Hubei Province, middle Yangtze region, China

Contact Info

Product

Resources

About