Analytical support of research projects at the Institute
Currently, the Center for Geodynamics and Geochronology runs two projects and participate in one additional project. Namely they are:
- Russian Foundation for Basic Research project “Precise chronology of voluminous basalt volcanism based on 40Ar/39Ar dating: an example of five flood basalt provinces and one rift”, number 15-05-05130.
The project is for three years from 2015 to the end of 2017. It is devoted to geochronological studies of mafic volcanic rocks and intrusions in the Cenozoic Baikal rift system, Cretaceous-Paleogene Deccan Traps, Jurassic Karoo-Ferrar province, Permian-Triassic Siberian Traps, Permian Emeishan Traps and Devonian Vilyui-Yakutsk province. The major method used is the 40Ar/39Ar method, while the key instrument is a Argus VI mass-spectrometer.
The following peer-review papers have been published and/or accepted for publication under the auspices of the project:
- Cucciniello С., Demonterova E., Sheth H., Pande K., Vijayan A., 2015. Geochemistry and 40Ar/39Ar geochronology of the Central Saurashtra dyke swarm: implications for magmatic processes and volcanic stratigraphy of the northwestern Deccan Traps. Bulletin of Volcanology, v. 77, doi: 10.1007/s00445-015-0932-0.
- Ivanov A.V., 2015. Why volatiles are required for cratonic flood basalt volcanism: two examples from the Siberian Craton, in Foulger, G.R., Lustrino, M, and King, S., eds, The Interdisciplinary Earth: A volume in honor of Don L. Anderson, GSA Special Paper, v. 514 and AGU Special publication, v. 71, p. 325-338, doi:10.1130/2015.2514(19).
- Ivanov A.V., Demonterova E.I., He H., Perepelov A.B., Travin A.V., Lebedev V.A., 2015. Volcanism in the Baikal rift: 40 years of active-versus-passive model discussion. Earth-Science Reviews, v. 148, p. 18-43, doi:10.1016/j.earscirev.2015.05.011.
- Ivanov A.V., Meffre S., Thompson J., Corfu F., Kamenetsky V.S., Kamenetsky M.B., Demonterova E.I.., 2017 in press. Timing and genesis of the Karoo-Ferrar large igneous province: New highprecision U-Pb data confirm short duration of the major magmatic pulse. Chemical Geology, doi: 10.1016/j.chemgeo.2016.10.008.
Russian Science Foundation project “Mafic volcanism of the Siberian Craton: sources by trace element and Sr-Nd-Pb isotopes”, number 16-17-10068.
The project is for two years and a half from mid 2016 to the end of 2018 with potential extension for another two years. It is devoted to Sr-Nd-Pb isotope characterization of mafic volcanic and intrusive rocks of the Siberian Craton regardless of their age. Mafic magmatism was episodic at the Siberian Craton starting from its origin in Paleoproterozoic, when few Archean blocks welded together, and continued to the Late Cenozoic. Few voluminous volcanic episodes are known through the history of the Siberian Craton. The aim of the project is to provide the Sr-Nd-Pb isotope systematics of mafic magmas erupted within the craton and to decipher the evolution of the magmatic systems. We use the class 1000 cleanroom for chemical preparation of the samples and a Finnigan MAT262 mass-spectrometer for measurements of the isotope ratios.
One paper has been accepted for publication so far under the auspices of the project:
- Kamenetsky V.S., Maas R., Kamenetsky M.B., Yaxley G.M., Ehrig K., Zellmer G.F., Bindeman I.N., Sobolev A.V., Kuzmin D.V., Ivanov A.V., Woodhead J., Schilling J.-G., 2017 in press. Multiple mantle sources of continental magmatism: insights from “high-Ti” picrites of Karoo and other large igneous provinces. Chemical Geology, doi: 10.1016/j.chemgeo.2016.08.034.
Russian Foundation for Basic Research project “Paleoproterozoic subduction-related complexes of the southern Siberian craton: petrogenesis and geodynamic constrains”, number 15-05-05863.
For this project, the researchers of the Center for Geodynamics and Geochronology provide support for major and trace element analyses of studied samples. The project is for three years from 2015 to the end of 2017.