| 词条 | Aye Formation |
| 释义 |
The Aye Formation is a geologic formation in the Dinant synclinorium, Ardennes, Belgium. It is part of the Condroz Group,[1] at the base of the middle Famennian (Upper Devonian). It is characterized by the presence of a conodont fossil Palmatolepis rhomboidea.[2] It is composed mostly of greenish shales and siltstones with some lenses of sandstone. As it formed in an offshore position, in a subtidal wave-influenced environment, bioturbation features are significant. Cross-bedding structures also occur.[2] The stratotype is located in the area of Houyet and Aye in Belgium.[2] References1. ^{{cite web | url=http://ncs.naturalsciences.be/devonian/42-descriptions | title=Devonian—Descriptions | publisher=National Commission for Stratigraphy Belgium | work=Devonian | accessdate=7 April 2017}} {{Belgium-stub}}{{France-geologic-formation-stub}}2. ^1 2 {{cite web | url=http://ncs.naturalsciences.be/devonian/427-aye-formation-aye | title=Aye Formation | publisher=National Commission for Stratigraphy Belgium | work=Devonian | accessdate=7 April 2017}} 7 : Geology of Belgium|Devonian System of Europe|Famennian|Sandstone formations|Shale formations|Siltstone formations|Shallow marine deposits |
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