Chattian

Chattian
Chattian
27.82 – 23.03 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Chronology
←	PETM
←	First Antarctic permanent ice-sheets
←	K-Pg mass; extinction
	Subdivision of the Paleogene according to the ICS, as of 2021.; Vertical axis scale: millions of years ago;
Formerly part of	Tertiary Period/System
Etymology
Name formality	Formal
Usage information
Celestial body	Earth
Regional usage	Global (ICS)
Time scale(s) used	ICS Time Scale
Definition
Chronological unit	Age
Stratigraphic unit	Stage
Time span formality	Formal
Lower boundary definition	LAD of the Planktonic Foraminifer Chiloguembelina (Base of Foram Zone P21b)
Lower boundary GSSP	Monte Cagnero, Central Apennines, Italy; 43°38′48″N 12°28′04″E / 43.6466°N 12.4677°E
Lower GSSP ratified	September 2016
Upper boundary definition	Base of magnetic polarity chronozone C6Cn.2n.; FAD of the Planktonic Foraminiferan Paragloborotalia kugleri;
Upper boundary GSSP	Lemme-Carrosio Section, Carrosio, Italy; 44°39′32″N 8°50′11″E / 44.6589°N 8.8364°E
Upper GSSP ratified	1996

The Chattian is, in the geologic timescale, the younger of two ages or upper of two stages of the Oligocene Epoch/Series. It spans the time between 27.82 and 23.03 Ma. The Chattian is preceded by the Rupelian and is followed by the Aquitanian (the lowest stage of the Miocene).^[5]

^ Zachos, J. C.; Kump, L. R. (2005). "Carbon cycle feedbacks and the initiation of Antarctic glaciation in the earliest Oligocene". Global and Planetary Change. 47 (1): 51–66. Bibcode:2005GPC....47...51Z. doi:10.1016/j.gloplacha.2005.01.001.
^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy.
^ Coccioni, Rodolfo; Montanari, Alessandro; Nice, David; Brinkhuis, Henk; Deino, Alain; Frontalini, Fabrizio; Liter, Fabrizio; Maiorano, Patricia; Monechi, Simonetta; Prods, Jörg; Rochette, Pierre; Sagnotti, Leonardo; Sideri, Marianna; Sprovieri, Mario; Tateo, Fabio; Touchard, Yannick; Can Simaeys, Stefaan; Williams, Graham L. (1 March 2018). "The Global Stratotype Section and Point (GSSP) for the base of the Chattian stage (Paleogene System, Oligocene Series) at Monte Cagnero, Italy". Episodes. 41 (1): 17–32. doi:10.18814/epiiugs/2018/v41i1/018003. hdl:11573/1611823.
^ Steininger, Fritz F.; M. P. Aubry; W. A. Berggren; M. Biolzi; A. M. Borsetti; Julie E. Cartlidge; F. Cati; R. Corfield; R. Gelati; S. Iaccarino; C. Napoleone; F. Ottner; F. Rögl; R. Roetzel; S. Spezzaferri; F. Tateo; G. Villa; D. Zevenboom (1997). "The Global Stratotype Section and Point (GSSP) for the base of the Neogene" (PDF). Episodes. 20 (1): 23–28. doi:10.18814/epiiugs/1997/v20i1/005.
^ "International Commission on Stratigraphy 2017".