Late Tremadocian (Early Ordovician) reefs on the Yangtze Platform, South China, and their geobiological implications: a synthesis
Late Tremadocian (Early Ordovician) reefs on the Yangtze Platform, South China, and their geobiological implications: a synthesis
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华南扬子地台晚特雷马多世（早奥陶世）生物礁及其地球生物学意义：综合
DOI：
10.1186/s42501-021-00086-0
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发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Yue Li
中科院分区：
文献类型：
--
作者：
Jian-Po Wang;Qi-jian LI;Kershaw Stephen;Yuan-Yuan Zhang;Shen-Yang Yu;Yue Li
本文对扬子地台早奥陶世生物礁分布的控制因素进行了综述和讨论。早奥陶世扬子地台位于低纬度地区，记录了丰富多样的生物礁。晚特里马多世，扬子地台西部潮上带至潮间带普遍发育泥质和层状叠层石，扬子地台东部较深的沃茨发育柱状叠层石。中扬子台地潮下带上部发育以珊瑚礁为主的生物礁。从微生物为主的后生动物为主的礁与浅向上的周期的过渡是显而易见的，这表明主要的造礁者的组成主要是由水深驱动。在奥陶纪生物多样性大事件期间，后生动物竞争的增加减少了微生物礁的丰度。充足的营养盐供应被解释为促进了扬子地台中部浅水环境中以珊瑚为主的生物礁的局部发育，特别是以丰富的石海绵和Calathium的孤生化石的扩张为代表。高盐度的环境设置促进了近海位置的叠层石的水华。深水潮下带环境中的低氧含量可能导致这些栖息地中没有骨骼礁，因此叠层藻的大量出现位于浅水的中部和东部平台。在此期间，整个平台上没有角化海绵状叠层石。
This study provides an overview and discussion of controls on the distribution of organic reefs during the Early Ordovican Period, in the Yangtze Platform, a region of epicontinental sedimentary rocks in South China. The Yangtze Platform was located in low latitudes during the Early Ordovician and recorded rich and diverse reefs through that time. During the late Tremadocian Epoch, dolomitic and stratiform stromatolites were common in supratidal to intertidal zones of the western Yangtze Platform, while columnar stromatolites formed in deeper waters of the eastern Yangtze Platform. Skeletal-dominated reefs occurred in upper subtidal settings of the central Yangtze Platform. A transition from microbial-dominated to metazoan-dominated reefs with shallowing-upward cycles was evident, indicating that the composition of the main reef-builders was driven mainly by water depth. Increasing metazoan competition during the Great Ordovician Biodiversification Event reduced the abundance of microbial reefs. Sufficient nutrient supply is interpreted to have promoted development of skeletal-dominated reefs locally in shallow settings in the central Yangtze Platform, especially represented by the expansion of abundant solitary fossils of lithistid sponges andCalathium. High salinity environmental settings facilitated the bloom of stromatolites in near-shore locations. Low oxygen content in deep subtidal settings may have led to the absence of skeletal reefs in these habitats, so the mass occurrences of stromatolites was located in the shallower-water central and eastern platform. No keratose sponge-bearing stromatolite can be confirmed across the platform during this interval.
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影响因子：
5.3
作者：
通讯作者：
--
影响因子：
5.8
作者：
R. J. Elias;Dong-Jin Lee;B. Pratt
通讯作者：
R. J. Elias;Dong-Jin Lee;B. Pratt
DOI：
--
发表时间：
2009
期刊：
--
影响因子：
--
作者：
S. Church
通讯作者：
S. Church
影响因子：
3.3
作者：
Liu Jianbo;Zhan Renbin
通讯作者：
Liu Jianbo;Zhan Renbin
DOI：
10.1144/m38.2
发表时间：
2013
期刊：
--
影响因子：
--
作者：
T. Torsvik;L. Cocks
通讯作者：
T. Torsvik;L. Cocks