Furongium
system | series | step | ≈ age ( mya ) |
---|---|---|---|
higher | higher | higher | younger |
Cambrian | Furongium | 10th stage | 485.4 ⬍ 489.5 |
Jiangshanium | 489.5 ⬍ 494 |
||
Paibium | 494 ⬍ 497 |
||
Miaolingium | Guzhangium | 497 ⬍ 500.5 |
|
Drumium | 500.5 ⬍ 504.5 |
||
Wuliuum | 504.5 ⬍ 509 |
||
2nd series | 4th stage | 509 ⬍ 514 |
|
3rd stage | 514 ⬍ 521 |
||
Terreneuvium | 2nd stage | 521 ⬍ 529 |
|
Fortunium | 529 ⬍ 541 |
||
deeper |
The furongian is the fourth and topmost chronostratigraphic series of the Cambrian in geological history . The series is geochronologically dated to the period from 497 to 485.4 million years. The furongian following the Miaolingium and go after the Unterordovizium advance.
Naming and history
The name of the series is derived from the Chinese word furong ( 芙蓉 ), which means ' lotus ' among other things . He refers to the location of the GSSP of the series (see below) in the southern Chinese province of Hunan , which is also known as "Lotus Land". The name and GSSP were officially proposed in 2002 and ratified by the IUGS in 2003 . The furongian corresponds to the Upper Cambrian of the traditional tripartite Cambrian.
Definition and GSSP
The lower limit of the series is determined by the first appearance of the agnostoid trilobite species Glyptagnostus reticulatus . The GSSP of the Furongium series (and the Paibium stage) is an open layer sequence (“Paibi profile”) of the Huaqiao Formation in the province of Hunan , China . The boundary to the Lower Ordovician is defined by the first appearance of the conodont species Iapetognathus fluctivagus .
Breakdown
Currently, the furongium is tentatively divided into three chronostratigraphic levels :
-
System : Cambrian (541-485.4 mya )
-
Series : Furongium (497-485.4 mya)
- Stage : Cambrian 10th stage (489.5–485.4 mya)
- Level: Jiangshanium (494-489.5 mya)
- Stage: Paibium (497-494 mya)
- Series: Miaolingium (509–497 mya)
- Series: Cambrian 2nd series (521–509 mya)
- Series: Terreneuvium (541–521 mya)
-
Series : Furongium (497-485.4 mya)
literature
General
- Shanchi Peng, Loren E. Babcock, Richard A. Robison, Huanling Lin, Margaret N. Rees, Matthew R. Saltzman: Global Standard Stratotype-section and Point (GSSP) of the Furongian Series and Paibian Stage (Cambrian). Lethaia. Vol. 37, No. 4, 2004, pp. 365-379, doi: 10.1080 / 00241160410002081 (alternative full text access : ICS ).
- Shanchi Peng, Loren E. Babcock, Roger A. Cooper: The Cambrian Period. Pp. 437-488 in: Felix M. Gradstein, James G. Ogg, Mark Schmitz, Gabi Ogg: The Geologic Time Scale 2012. Volume 2. Elsevier 2012, ISBN 978-0-44-459434-1 .
On the geological tradition of the furongium in the German-speaking area
- German Stratigraphic Commission, Manfred Menning (Hrsg.): Stratigraphische Tisch von Deutschland 2002 . Potsdam 2002, ISBN 3-00-010197-7 (1 sheet, Stratigraphie.de [PDF; 6.6 MB ]).
- Commission for the paleontological and stratigraphic research of Austria of the Austrian Academy of Sciences (ed.): The Stratigraphic Table of Austria 2004 (sedimentary layer sequences). Vienna 2004 (1 sheet, uni-graz.at [PDF; 376 kB])
Web links
Individual evidence
- ↑ Shanchi Peng, Loren E. Babcock, Richard A. Robison, Huanling Lin, Margaret N. Rees, Matthew R. Saltzman: Proposed Global Standard Stratotype-Section and Point for the Paibian Stage and Furongian Series (Upper Cambrian). ( Memento from November 2, 2007 in the Internet Archive ) HTML version on the web server of the Julius Maximilians University of Würzburg