Danian

Danian
Chronology
Formerly part ofTertiary Period/System
Etymology
Name formalityFormal
Usage information
Celestial bodyEarth
Regional usageGlobal (ICS)
Time scale(s) usedICS Time Scale
Definition
Chronological unitAge
Stratigraphic unitStage
Time span formalityFormal
Lower boundary definitionIridium enriched layer associated with a major meteorite impact and subsequent K–Pg extinction event[3]
Lower boundary GSSPEl Kef Section, El Kef, Tunisia
36°09′13″N 8°38′55″E / 36.1537°N 8.6486°E / 36.1537; 8.6486[3]
Lower GSSP ratified1991[3]
Upper boundary definitionOnset of sea-level drop and carbon isotope shift
Upper boundary GSSPZumaia Section, Basque Country, Spain
43°17′57″N 2°15′40″W / 43.2992°N 2.2610°W / 43.2992; -2.2610
Upper GSSP ratified2008[4]

The Danian is the oldest age or lowest stage of the Paleocene Epoch or Series, of the Paleogene Period or System, and of the Cenozoic Era or Erathem. The beginning of the Danian (and the end of the preceding Maastrichtian) is at the Cretaceous–Paleogene extinction event 66 Ma. The age ended 61.6 Ma, being followed by the Selandian.[5]

  1. ^ 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.
  2. ^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy.
  3. ^ a b c 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.
  4. ^ Schmitz, B.; Pujalte, V.; Molina, E.; Monechi, S.; Orue-Etxebarria, X.; Speijer, R. P.; Alegret, L.; Apellaniz, E.; Arenillas, I.; Aubry, M.-P.; Baceta, J.-I.; Berggren, W. A.; Bernaola, G.; Caballero, F.; Clemmensen, A.; Dinarès-Turell, J.; Dupuis, C.; Heilmann-Clausen, C.; Orús, A. H.; Knox, R.; Martín-Rubio, M.; Ortiz, S.; Payros, A.; Petrizzo, M. R.; von Salis, K.; Sprong, J.; Steurbaut, E.; Thomsen, E. (2011). "The global Stratotype Sections and Points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene Paleocene) stages at Zumaia, Spain". Episodes. 34 (4): 220–243. doi:10.18814/epiiugs/2011/v34i4/002.
  5. ^ International Commission on Stratigraphy 2017

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