Evolutionary rates of Jurassic ammonites in relation to sea-level fluctuations

Détails

ID Serval
serval:BIB_7A016EF91FE5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Evolutionary rates of Jurassic ammonites in relation to sea-level fluctuations
Périodique
Palaios
Auteur(s)
Sandoval J., O'Dogherty L., Guex J.
ISSN-L
0883-1351
Statut éditorial
Publié
Date de publication
2001
Peer-reviewed
Oui
Volume
16
Pages
311-335
Langue
anglais
Notes
ISI:000170175700002
Résumé
An analysis is presented of the diversity and faunal turnover of
Jurassic ammonites related to transgressive /regressive events. The data
set contained 400 genera and 1548 species belonging to 67 ammonite zones
covering the entire Jurassic System. These data were used in the
construction of faunal turnover curves and ammonite diversities, that
correlate with sea-level fluctuation curves. Twenty-four events of
ammonite faunal turnover are analyzed throughout the Jurassic. The most
important took place at the Sinemurian-Carixian boundary, latest
Carixian-Middle Domerian, Domerian-Toarcian boundary, latest Middle
Toarcian-Late Toarcian, Toarcian-Aalenian boundary, latest
Aalenian-earliest Bajocian, latest Early Bajocian-earliest Late
Bojocian, Early Bathonian-Middle Bathonian boundary, latest Middle
Bathonian-earliest Late Bathonian, latest Bathonian-Early Callovian,
earliest Early Oxfordian-Middle Oxfordian, earliest Late
Oxfordian-latest Oxfordian, latest Early Kimmeridgian, Late
Kimmeridgian, middle Early Tithonian and Early Tithonian-Late Tithonian
boundary. More than 75 percent of these turnovers correlate with
regressive-transgressive cycles in the Exxon, and /or Hallam's sea-level
curves. Inmost cases the extinction events coincide with regressive
intervals, whereas origination and radiation events are related to
transgressive cycles. The turnovers frequently coincide with major or
minor discontinuities in the Subbetic basin (Betic Cordillera).
Création de la notice
19/10/2012 16:48
Dernière modification de la notice
03/03/2018 18:33
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