Paleogene යනු සෙනොසොයික් යුගයේ පළමු කාලපරිඡ්ඡේදය, එනම් වසර මිලියන 66-23 කට පෙර යුගය වේ.
| Paleogene | |
|---|---|
A map of Earth as it appeared during the late Paleogene (Oligocene Epoch, 33 Ma) | |
| Chronology | |
සැකිල්ල:Paleogene graphical timeline | |
| Etymology | |
| Name formality | Formal |
| Alternate spelling(s) | Palaeogene, Palæogene |
| Usage information | |
| Celestial body | Earth |
| Regional usage | Global (ICS) |
| Time scale(s) used | ICS Time Scale |
| Definition | |
| Chronological unit | Period |
| Stratigraphic unit | System |
| Time span formality | Formal |
| Lower boundary definition | Iridium enriched layer associated with a major meteorite impact and subsequent K-Pg extinction event. |
| Lower boundary GSSP | El Kef Section, El Kef, Tunisia 36°09′13″N 8°38′55″E / 36.1537°N 8.6486°E |
| GSSP ratified | 1991 |
| Upper boundary definition |
|
| Upper boundary GSSP | Lemme-Carrosio Section, Carrosio, Italy 44°39′32″N 8°50′11″E / 44.6589°N 8.8364°E |
| GSSP ratified | 1996 |
| Atmospheric and climatic data | |
| Mean atmospheric O2 content | c. 26 vol % (130 % of modern) |
| Mean atmospheric CO2 content | c. 500 ppm (2 times pre-industrial) |
| Mean surface temperature | c. 18 °C (4 °C above modern) |
ආශ්රිත
- Cretaceous–Paleogene boundary
මූලාශ්ර
- Molina, Eustoquio; Alegret, Laia; Arenillas, Ignacio; José A. Arz; Gallala, Njoud; Hardenbol, Jan; Katharina von Salis; Steurbaut, Etienne; Vandenberghe, Noel; Dalila Zaghibib-Turki (2006). "The Global Boundary Stratotype Section and Point for the base of the Danian Stage (Paleocene, Paleogene, "Tertiary", Cenozoic) at El Kef, Tunisia - Original definition and revision". Episodes. 29 (4): 263–278. doi:10.18814/epiiugs/2006/v29i4/004.
- 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.
විකිපීඩියා, විකි, විශ්වකෝෂය, පොත, පුස්තකාලය, ලිපිය, කියවීම, නොමිලේ බාගත කිරීම, Paleogene පිළිබඳ තොරතුරු, Paleogene යනු කුමක්ද? Paleogene යනු කුමක් දර්ශනය කරන්නේ?