Types and biotic successions of Ordovician reefs in China

Wang, JianPo; Deng, Xiaojie; Wang, Guan; Li, Yue

doi:10.1007/s11434-011-4936-7

Cited by 39 publications

(23 citation statements)

References 22 publications

(36 reference statements)

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“…It culminated in the appearance of a new set of reef‐building communities in the Late Ordovician (Heckel ; Sheehan ; Cecile ; Wood ; Kiessling ; Webb ; Wang et al . ). The appearance of the new reef organisms and the concomitant increase in total diversity can be seen on a larger scale on the whole platform of the Central Tarim Uplift.…”

Section: Discussionmentioning

confidence: 97%

Ramp morphology controlling the facies differentiation of a Late Ordovician reef complex at Bachu, Tarim Block, NW China

Zhang

Wang

Munnecke

et al. 2015

LET

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A carbonate ramp in the shallow-marine northwestern part of the Central Tarim Uplift, Bachu, NW China, exhibits an extraordinary Late Ordovician reef complex along the Lianglitag Mountains, exposed for a distance of about 25 km. Seven localities within the 'Middle Red Limestone' of the Upper Member of the Lianglitag Formation (Katian, Late Ordovician) illustrated the changes in biofacies and lithofacies: northern, seaward-directed patch reefs are replaced towards the south by coeval grain banks. The patch reef units are dominated by microbial and calcareous algal components. The reefs at the northernmost locality are knoll-shaped, kalyptra-shaped or irregularly shaped with sizes of individual reefs increasing from about 2 m in height and diameter. Stratigraphically upward, reefs notably expand to larger structures by several mounds coalescing; they are generally about 10 m thick and tens of metres in lateral extent. The maximum thickness of the main patch reef is more than 30 m, and its diameter is around 100 m. The reefal units turn into biostromes with gentler relief southward and still further south grade into banks composed of peloids and coated grains. The southernmost locality is still a shallow-water bank, and the coastline is not documented in the study area. The present evidence indicates that the Late Ordovician palaeo-oceanography provided a number of environments for the optimal growth of carbonate build-ups; microbial-calcareous algal communities could thrive in areas where the innovative metazoan reef frameworks consisting of corals and stromatoporoids did not play a significant role. The ramp morphology, especially changes in water depth, controlled the configuration of the reef complex. □ Bachu, Late Ordovician, Lianglitag Formation, NW China, reef complex, Tarim Block.Yuanyuan Zhang [yuanyuanzh85@163.com], and Yue Li [yueli@nigpas.ac.cn], Nanjing

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Section: Discussionmentioning

confidence: 97%

Ramp morphology controlling the facies differentiation of a Late Ordovician reef complex at Bachu, Tarim Block, NW China

Zhang

Wang

Munnecke

et al. 2015

LET

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“…Some of these reefs are mainly microbial, but demosponges helped as secondary reef builders (Cañas and Carrera, 1993;Riding and Zhuravlev, 1995;Shapiro and Rigby, 2004;Kruse and Zhuravlev, 2008;Wang et al, 2012;Choh et al, 2013;Kruse and Reitner, 2014) (mainly summarized in Rowland and Shapiro, 2002;Hong et al, 2012;Adachi et al, 2015).…”

Section: Paleogeographic Distribution Of Amsassia and Its Role In Thementioning

confidence: 99%

“…Calathids are not as diverse as the orchocladine demosponges, but show a widespread distribution (Rowland and Shapiro, 2002;Webby, 2002;Wang et al, 2012).…”

Section: Paleogeographic Distribution Of Amsassia and Its Role In Thementioning

confidence: 99%

A lowermost Ordovician tabulate-like coralomorph from the Precordillera of western Argentina: a main component of a reef-framework consortium

Carrera¹,

Astini²,

Gómez³

2016

J. Paleontol.

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Abstract.-Although putative corals of uncertain affinities occur in the early Cambrian, the earliest definite tabulate corals have not been described prior to the Early Ordovician in North America. This paper reports a new finding of a tabulate-like coralomorph forming part of biostratigraphically well-constrained reef mounds in the latest Cambrian-Early Ordovician La Silla Formation in the Argentine Precordillera. The oldest record of the coralomorph genus Amsassia is reported and a new species, A. argentina, is erected. The discovery of this genus in the lowermost Ordovician modifies the previously proposed paleogeographic distribution and patterns of origination and migration routes of this coral-like organism. Amsassia argentina n. sp. constitutes a main framework builder together with a complex microbial consortium. This oldest occurrence of Amsassia as a reef builder represents a new record of a skeletal organism in the gap of metazoan reef constructors after the demise of archaeocyaths in the late early Cambrian.

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“…The complexity of reef communities also showed a steep rise in the Late Ordovician (Webby 2002). In South China, highly diverse Late Ordovician reef complexes only existed on an isolated platform in the Jiangshan-Changshan-Yushan area of southeast China (Bian et al 1996;Li et al 2004;Wang et al 2012). Late Katian reefs on this platform provide the opportunity to trace the trajectory of reef development.…”

Section: Introductionmentioning

confidence: 99%

Allogenic succession in Late Ordovician reefs from southeast China: a response to the Cathaysian orogeny

Li¹,

Kiessling

2015

Estonian J. Earth Sci.

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Several Late Ordovician (late Katian) reef complexes are known from the border area of Jiangxi and Zhejiang provinces in southeast China. We studied two coral-stromatoporoid reefs exposed in the Xiazhen Formation at Zhuzhai (Yushan, Jiangxi). The reefs have a combined thickness of 7.4 m and are metazoan-dominated with most reef-builders in growth position. Stromatoporoids and tabulate corals constitute the framework of the reefs. Stromatoporoids (mostly Clathrodictyon) dominate the first unit and show a vertical increase in proportion and dominance from the middle part to the top of the unit, whereas tabulate corals (dominated by Catenipora and Agetolites) are the main reef-builders in the second unit where stromatoporoids are rare. We attribute this change to a greater tolerance of tabulate corals to turbidity, allowing them to thrive in the muddy facies of the upper unit. This facies change is probably related to the increasing terrestrial input from the northwestward expansion of the Cathaysian Land during the late Katian. The Cathaysian orogeny also led to a short-term exposure of the sea floor in the study area, which terminated the reef growth.

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Types and biotic successions of Ordovician reefs in China

Cited by 39 publications

References 22 publications

Ramp morphology controlling the facies differentiation of a Late Ordovician reef complex at Bachu, Tarim Block, NW China

Ramp morphology controlling the facies differentiation of a Late Ordovician reef complex at Bachu, Tarim Block, NW China

A lowermost Ordovician tabulate-like coralomorph from the Precordillera of western Argentina: a main component of a reef-framework consortium

Allogenic succession in Late Ordovician reefs from southeast China: a response to the Cathaysian orogeny

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