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单词 Upper Cambrian
释义

Upper Cambrian

英语例句库

Middle-Upper Cambrian dolomites in Shimen,Hunan Province,are mainly composed of anhedral micritic dolomite,euhedral and subhedral granular dolomites,grain dolomite.

湖南石门中上寒武统白云岩极其发育,类型多样,不同类型的白云岩其成因机理和白云石化模式各不相同。

英语百科

Furongian

(重定向自Upper Cambrian)
Key events in the Cambrian
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Ordovician
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Fortunian
"Stage 2"
"Stage 3"
"Stage 4"
"Stage 5"
Drumian
Guzhangian
Paibian
Jiangshanian
"Stage 10"
 
 
 
 
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Baykonur
glaciation
Baykonur
glaciation
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Orsten Fauna
Burgess Shale
Kaili biota
Archaeocyatha extinction
Emu Bay Shale
Sirius Passet biota
Chengjiang biota
First Trilobites
SSF diversification, first brachiopods & archaeocyatha
First halkieriids, mollusсs, hyoliths SSF
Treptichnus pedum trace
Large negative peak δ 13Ccarb excursion
First Cloudina & Namacalathus mineral tubular fossils
Stratigraphic scale of the ICS subdivisions and Precambrian/Cambrian boundary.

The Furongian is the fourth and final series of the Cambrian. It lasted from ~497 to 485.4 ± 1.9 million years ago. It succeeds the still unnamed 3rd series of the Cambrian and precedes the Lower Ordovician Tremadocian stage. It is subdivided into three stages: the Paibian, Jiangshanian and the unnamed 10th stage of the Cambrian.

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更新时间:2025/6/19 9:02:06