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词条 Dengying Formation
释义

  1. Members

  2. Genera

  3. Ichnogenera

  4. See also

  5. References

{{Infobox rockunit
| name = Dengying Formation
| image = DuoshantuoDengyingTransition.jpg
| caption = Transition between uppermost Doushantuo Formation and lowermost Dengying Formation
| type = Formation
| period = Ediacaran
| age = Ediacaran
~{{fossil range|551|541}}
| prilithology =
| otherlithology =
| namedfor =
| namedby =
| region = Yangtze Gorges
| country = {{CHN}}
| coordinates =
| unitof =
| subunits = See: Members
| underlies = Yanjiahe Formation[1]
| overlies = Doushantuo Formation
| thickness =
| extent =
| area =
| map =
| map_caption =
}}

The Dengying Formation is an upper Ediacaran (551-541 Ma[2]) fossiliferous geologic formation found in South China. It was deposited on a shallow marine carbonate platform.[3]

Members

Listed by ascending age:

  • The Hamajing Member is characterized by light grey, medium- to thick-bedded dolostone, intercalated with thin layers of chert.[3]
  • The Shibantan Member is interpreted to represent a subtidal environment and is composed of dark grey, thin-bedded bituminous limestone. It is the most fossiliferous of the Dengying Formation members and has yielded several trace fossils, such as Lamonte.[4]
  • The Baimatuo Member consists of light grey, thick-bedded dolostone.[3]

Traditionally, the Tianzhushan Member was considered to be the uppermost unit of the Dengying Formation. However, its small shelly fossils and Micrhystridium-like acritarchs are a shared characteristic with the Cambrian Yanjiahe Formation.[3]

Genera

  • Cloudina
  • Paracharnia
  • Sinotubulites
  • Yangtziramulus

Ichnogenera

  • Helminthoidichnites
  • Lamonte
  • Torrowangea

See also

  • List of fossiliferous stratigraphic units in China
  • Ediacaran biota

References

1. ^{{cite journal |last=Dong |first=Lin |last2=Xiao |first2=Shuhai |last3=Shen |first3=Bing |last4= Zhou |first4= Chuanming |last5= Guoxiang |first5= Li |last6=Yao |first6=Jinxian |date=2009 |title=Basal Cambrian Microfossils from the Yangtze Gorges Area (South China) and the Aksu Area (Tarim Block, Northwestern China) |url=http://jpaleontol.geoscienceworld.org/content/83/1/30.abstract |journal=Chemical Geology |volume=83|issue=1 |pages=30–34 |doi=10.1666/07-147R.1 |accessdate=15 August 2014}}
2. ^{{cite journal|last=Condon|first=Daniel|last2=Zhu|first2=Maoyan|last3=Bowring|first3=Samuel|last4=Wang|first4=Wei|last5=Yang|first5=Aihua|last6=Jin|first6=Yugan|date=2005|title=U–Pb ages from the Neoproterozoic Doushantuo Formation, China|journal=Science|volume=308|issue=5718|pages=5–98|doi=10.1126/science.1107765|pmid=15731406|jstor=3841402}}
3. ^{{cite journal |last=Zhou |first=Chuanming |last2=Xiao |first2=Shuhai |date=2006 |title=Ediacaran .δ13C chemostratigraphy of South China |url=http://www.sciencedirect.com/science/article/pii/S0009254106004207 |journal=Chemical Geology |volume=237 |issue=1–2 |pages=89–108 |doi=10.1016/j.chemgeo.2006.06.021 |accessdate=17 August 2014}}
4. ^{{cite journal |last=Meyer |first=Mike |last2=Xiao |first2=Shuhai |last3=Gill |first3= Benjamin C. |last4=Schiffbauer |first4=James D. |last5=Chen |first5=Zhe|last6=Zhou|first6=Chuanming|last7=Yuan|first7=Xunlai|date=2014 |title=Interactions between Ediacaran animals and microbial mats: Insights from Lamonte trevallis, a new trace fossil from the Dengying Formation of South China |url=http://www.sciencedirect.com/science/article/pii/S0031018213005634 |journal=Palaeogeography, Palaeoclimatology, Palaeoecology |volume=396 |pages=62–74 |doi=10.1016/j.palaeo.2013.12.026 |accessdate=17 August 2014}}

3 : Geologic formations of China|Paleontology in China|Cambrian northern paleotemperate deposits

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