Koniak (geologia)







Ten artykuł dotyczy piętra w stratygrafii. Zobacz też: Koniak.









































































System
Oddział
Piętro
 Wiek (mln lat)

Paleogen
Paleocen
Dan
młodsze

Kreda
Górna
Mastrycht
 66,0–72,1

Kampan
 72,1–83,6

Santon
 83,6–86,3

Koniak
 86,3–89,8

Turon
 89,8–93,9

Cenoman
 93,9–100,5

Dolna
Alb
 100,5–113,0

Apt
 113,0–125,0

Barrem
 125,0–129,4

Hoteryw
 129,4–132,9

Walanżyn
 132,9–139,8

Berrias
 139,8–145,0

Jura
Górna
Tyton
starsze
Podział według IUGS, luty 2017

Koniak (ang. Coniacian)


  • w sensie geochronologicznym – trzeci wiek późnej kredy w erze mezozoicznej, trwający około 3,5 miliona lat (od 89,8 ± 0,3 do 86,3 ± 0,5 mln lat). Koniak jest młodszy od turonu a starszy od santonu.

  • w sensie chronostratygraficznym – trzecie piętro górnej kredy, wyższe od turonu a niższe od santonu.

Stratotyp dolnej granicy koniaku znajduje się w kamieniołomie Salzgitter-Salder koło Hanoweru (Dolna Saksonia, Niemcy). Granica opiera się na pierwszym wystąpieniu małża Cremnoceramus rotundatus (sensu Troeger).
Nazwa pochodzi od miasta Cognac w zachodniej Francji.



Bibliografia |



  • International Commission on Stratigraphy (ang.)


Zobacz też |



  • tabela stratygraficzna

  • kreda

  • senon













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