- Tytuł:
- Oxygen isotope analysis of shark teeth phosphates from Bartonian (Eocene) deposits in Mangyshlak peninsula, Kazakhstan
- Autorzy:
-
Pelc, A.
Hałas, S.
Niedźwiedzki, R. - Powiązania:
- https://bibliotekanauki.pl/articles/2086536.pdf
- Data publikacji:
- 2011
- Wydawca:
- Polskie Towarzystwo Mineralogiczne
- Tematy:
-
Bartonian
carbonate
Mangyshlak peninsula
phosphate
shark teeth
δ18O
δ13C - Opis:
- We report the results of high-precision (±0.05‰) oxygen isotope analysis of phosphates in 6 teeth of fossil sharks from the Mangyshlak peninsula. This precision was achieved by the offline preparation of CO2 which was then analyzed on a dual-inlet and triple-collector IRMS. The teeth samples were separated from Middle- and Late Bartonian sediments cropping out in two locations, Usak and Kuilus. Seawater temperatures calculated from the δ18O data vary from 23–41oC. However, these temperatures are probably overestimated due to freshwater inflow. The data point at higher temperature in the Late Bartonian than in the Middle Bartonian and suggest differences in the depth habitats of the shark species studied.
- Źródło:
-
Mineralogia; 2011, 42, 1; 53--61
1899-8291
1899-8526 - Pojawia się w:
- Mineralogia
- Dostawca treści:
- Biblioteka Nauki
Artykuł