Middle Miocene isotope stratigraphy and paleoceanographic evolution of the northwest and southwest Australian margins (Wombat Plateau and Great Australian Bight)

2004 ◽  
Vol 208 (1-2) ◽  
pp. 1-22 ◽  
Author(s):  
Ann Holbourn ◽  
Wolfgang Kuhnt ◽  
J.A.(Toni) Simo ◽  
Qianyu Li
Keyword(s):  
Middle Miocene ◽  
Isotope Stratigraphy ◽  
Great Australian Bight

The first record of fossil penguins from East Antarctica

2012 ◽  
Vol 25 (3) ◽  
pp. 397-408 ◽  
Author(s):  
Piotr Jadwiszczak ◽  
Krzysztof P. Krajewski ◽  
Zinaida Pushina ◽  
Andrzej Tatur ◽  
Grzegorz Zieliński
Keyword(s):  
Late Miocene ◽  
Middle Miocene ◽  
First Record ◽  
East Antarctica ◽  
X Ray Diffraction ◽  
Diagenetic Alteration ◽  
Strontium Isotope Stratigraphy ◽  
Extant Genus ◽  
Isotope Stratigraphy ◽  
The Antarctic

AbstractThis paper presents the first fossil penguin from East Antarctica, and the only one known south of the Antarctic Circle. It is represented by two well-preserved elements of the wing skeleton, humerus and radius, obviously assignable to the extant genus Spheniscus. They were found in the glaciomarine succession of the Fisher Bench Formation (Fisher Massif, Prince Charles Mountains, Mac. Robertson Land), which was dated using Strontium Isotope Stratigraphy to be Late Miocene in age (10.2 Ma). They are only slightly younger than the oldest remains undoubtedly attributable to this taxon. The X-ray diffraction and Fourier Transform Infrared Spectroscopy indicate diagenetic alteration of the original bone bioapatite under dominantly marine conditions. The Late Miocene was a period of ice margin retreat and marine incursion into the Lambert embayment that followed Middle Miocene cooling of the Antarctic climate. The fossils strongly suggest that variable climatic and environmental conditions in East Antarctica may have been an important factor in the evolution of penguins there during the Neogene.

Strontium Isotope Stratigraphy and the thermophilic fossil fauna from the middle Miocene of the East Pisco Basin (Peru)

2020 ◽  
Vol 97 ◽  
pp. 102399 ◽  
Author(s):  
Giulia Bosio ◽  
Elisa Malinverno ◽  
Alberto Collareta ◽  
Claudio Di Celma ◽  
Anna Gioncada ◽  
...  
Keyword(s):  
Middle Miocene ◽  
Strontium Isotope ◽  
Strontium Isotope Stratigraphy ◽  
Isotope Stratigraphy
Sign in / Sign up

Export Citation Format

Share Document