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Evidence for sea‐level falls in the Permian‐Triassic transition in the Ziyun area, South China by Wu Ya‐Sheng; Jiang Hong‐Xia; Fan Jia‐Song is a Earth and Planetary Sciences article available to read on EtoBox.

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## Abstract The sedimentology of three sections showing the Permian–Triassic (P–T) transition on an Upper Permian reef in Ziyun, Guizhou Province, southwest China provides evidence of sea‐level fall in this area. The P–T transition in the Gendan section, which covers a reef‐front sequence, contains a subaerial exposure surface and various desiccation cracks (including rolled‐up chips, in‐chip cracks, pyramid cracks, vertical cracks and sheet cracks), indicating sea‐level falls. The P–T transition in the Shitouzhai section, which covers a reef‐core sequence, contains three micritic beds with abundant pseudomorphs of tabular gypsum crystals replaced by calcite. The underlying centimetres of deposits are composed of fine‐crystalline dolostone, and have a sharp contact with the underlying reef‐core facies. The association of gypsum pseudomorphs and fine‐crystalline dolostone suggests an origin related to a supratidal evaporative environment. The P–T transition in the Tanluzhai section, which covers a back‐reef sequence, is fine‐crystalline dolostone, and shows a laminated algal structure indicating tidal‐flat environments. The middle part of the dolostone interval has become a collapse

Who reads Evidence for sea‐level falls in the Permian‐Triassic transition in the Ziyun area, South China?

Author

Wu Ya‐Sheng; Jiang Hong‐Xia; Fan Jia‐Song

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0072-1050)

Published

2009

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)