Permian Reefs Re-Examined: Extrinsic Control Mechanisms Of Gradual And Abrupt Changes During 40My Of Reef Evolution

二叠纪生物礁的重新审视:外在的渐变和突变的变化控制机制在40my的礁演化 注:没有中文版本,只有英文版本
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Abstract: The evolution of Permian reefs is characterized by the following sequence of events: (1) Late Carboniferous–Cisuralian radiation, (2) early Late Cisuralian (Artinskian–Kungurian) turnover, (3) Guadalupian radiation, (4) end-Guadalupian crisis, (5) Lopingian radiation, (6) end-Lopingian crisis at the PTB (Permian–Triassic boundary), and (7) the at least 7my (million years) metazoan reef gap during the Early Triassic. The early Late Cisuralian turnover and the end-Guadalupian reef crisis are gradual changes, while the end-Lopingian reef crisis represents an abrupt event. Lopingian reefs occur in a zone from 40°N to 15°S, Guadalupian reefs in an extended equatorial zone from 35°N to 35°S, and Lopingian reefs in a narrow equatorial zone of 20°N and 20°S. This pattern resulted from a network of global and regional control mechanisms including the assemblage of Pangea, the northward drift of continents, the opening of Neo-Tethys, and second-order sea level changes. The mechanism of the extinction has been intensely debated and a combination of the above mentioned long-term changes and abrupt ocean anoxia or hypercapnia (CO2-poisoning) for the end-Guadalupian reef crisis is considered.
翻译后摘要: 二叠纪生物礁的发展特点是由以下的事件序列:(1)的晚石炭Cisuralian辐射,(2)早,晚Cisuralian(亚丁斯克-Kungurian)营业额,(3)瓜辐射,(4)结束瓜危机的影响,(5)的乐平辐射,(6)结束的乐平危机在PTB(二叠系 - 三叠系界线),(7)至少7my(百万年)在早三叠世生物礁差距。早,晚Cisuralian营业额及最终瓜礁危机是渐进的变化,而最终乐平礁危机是突发性事件。乐平珊瑚礁出现在一个区域,从40°N到15°S,瓜礁在扩展赤道区从35°N〜35°S,和乐平珊瑚礁的在一个狭窄的赤道区20# XB0,N,20°S.这种模式从网络的全球性和区域性的控制机制,包括组合的盘古,向北漂移的大洲,开放的新特提斯洋和二阶海平面变化。机制的灭绝了激烈的辩论,最终瓜礁危机被认为是上面提到的长期变化和突然的海洋缺氧或高碳酸血症(CO2中毒)相结合的。
Author: Oliver Weidlich, ,
Author Unit: Technische Universität Berlin, Institut für Angewandte Geowissenschaften, Sekr. EB 10, Ern
Year: 2002
Source: Geobios
Volume-OnPage: Volume 35, Supplement 1, December 2002,Pages 287-2  
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