Paibium
| 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 Paibium is a time interval in the history of the earth . It is the lowest chronostratigraphic level of the Furongium series of the Cambrian . The lower limit of the Paibium is geochronologically at around 497 million years, the upper limit at around 494 million years ago. The Paibium precedes the Guzhangium stage of the as yet unnamed 3rd series of the Cambrian and is followed by the Jiangshanium .
Naming and history
The stage is named after the small town of Paibi near the GSSP (global reference for the lower limit of the stage). The name was proposed in 2002 by the international working group for the 8th stage of the Cambrian of the subcommittee of Cambrian stratigraphy around the Chinese geologist Peng Shanchi and ratified by the IUGS in 2003 .
Definition and GSSP
The lower limit of the level is defined by the first appearance of the agnostoid trilobite species Glyptagnostus reticulatus . The limit to the next following Jiangshanium is the first appearance of the trilobite species Agnostotes orientalis and Irvingella angustilimbata . A profile (“Paibi profile”) in the Huaqiao Formation in the Hunan Province , China, was determined as the GSSP .
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 Paibium 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