Selandian

Selandian
61.6 – 59.2 Ma
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 definitionOnset of sea-level drop and carbon isotope shift
Lower boundary GSSPZumaia Section, Basque Country, Spain
43°17′57″N 2°15′40″W / 43.2992°N 2.2610°W / 43.2992; -2.2610
Lower GSSP ratified2008[3]
Upper boundary definitionBase of magnetic polarity chronozone C26n
Upper boundary GSSPZumaia Section, Basque Country, Spain
43°17′59″N 2°15′39″W / 43.2996°N 2.2609°W / 43.2996; -2.2609
Upper GSSP ratified2008[3]

The Selandian is a stage in the Paleocene. It spans the time between 61.6 and 59.2 Ma. It is preceded by the Danian and followed by the Thanetian.[4] Sometimes[when?] the Paleocene is subdivided[by whom?] in subepochs, in which the Selandian forms the "middle Paleocene".

  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 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.
  4. ^ International Commission on Stratigraphy 2017