The First Data on the N Isotopic Composition of the Permian and Triassic of Northeastern Russia and Their Significance for Paleotemperature Reconstructions
- 19 Downloads
It is proposed that unstable temperature conditions in the Late Wuchiapingian and Early Changhsingian (Late Permian) changed in the Boreal Superrealm to less contrasting climatic conditions in the Late Changhsingian and Early Induan (the formation time of trap formation of the Siberian Platform), with a stable trend of increasing temperature in the Early Triassic. The problem of the absence of signs of mass extinction of marine organisms at the Permian–Triassic boundary in the Boreal Superrealm is discussed.
N-isotope analyses by E. Riegler are thankfully acknowledged. We are grateful to Prof. T. Algeo (University of Cincinnati, Ohio, United States) for assistance in searching for literature data.
This work was supported by the Russian Foundation for Basic Research (project nos. 17-05-00109, 18-05-00191, and 18-05-00023А), as well as according to the Russian Government Program of Competitive Growth of Kazan Federal University, and also at the expense of the subsidy allocated to the Kazan Federal University for the performance of the state task in the sphere of scientific activity no. 5.2192.2017/4.6.
- 7.A. S. Biakov, Permian Deposits of the Balygychan Uplift (North-East of Asia) (Shilo North-East Interdisciplinary Sci. Res. Inst. Far-Eastern Branch Russ. Acad. Sci., Magadan, 2004) [in Russian].Google Scholar
- 11.G. N. Sadovnikov, Stratigr. Geol. Correl. 16 (1), 4–60 (2008).Google Scholar
- 12.G. N. Sadovnikov, Paleontol. Zh., No. 2, 87–99 (2016).Google Scholar