Subcommison on Cryogenian Stratigraphy
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The Subcommission is the primary body for facilitation of international communication and scientific cooperation in Cryogenian stratigraphy directed at better understanding Earth system evolution during the Cryogenian Period (c.720 – c.635 Ma). Its priority is the unambiguous definition, by means of global stratotype section and points (GSSP), of a hierarchy of chronostratigraphic units that provide the framework for correlation of Cryogenian strata.
The Subcommission is organized by an Executive consisting of Chair, Vice-Chair and Secretary, who are all Voting Members of the Subcommission. These officers were appointed by ICS in 2020. There are currently 18 other Voting Members, making a total of 21 voting members. |
Subcommission events:
20th August, 2021. 11:00 GMT
Cryogenian Webinar given by Dr Ashleigh Hood from University Melbourne, on "Cryogenian glacial and interglacial carbonates of the Flinders Ranges, South Australia".
26-27th May
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Officers (2020-2024)
Chair: Maoyan Zhu
Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, China
myzhu@nigpas.ac.cn |
Vice Chair: Carol Dehler
Department of Geology,
Utah State University, USA Carol.Dehler@usu.edu |
Secretary: Ying Zhou
Department of Earth Science,
University College London, UK y-zhou@ucl.ac.uk |
Goal and tasks:
The main goals of this Subcommission are:
(a) To establish for the first time a rock-based GSSP for the base of the Cryogenian that will also serve as the top of the underlying Tonian;
(b) To identify criteria useful in the subdivision and correlation of Cryogenian (and upper Tonian) strata;
(c) To define the basal boundaries of Cryogenian epochs (series) and ages (stages) through the establishment of GSSPs;
(d) To facilitate international collaboration in research on Cryogenian stratigraphy and Earth history through subcommission sponsored field trips, workshops, and meetings.
In addition, the Subcommission is committed to expanding communication to a wider public through grassroots initiatives to conserve important Neoproterozoic geological sites, to support International Geoscience Programme projects, and to encourage the wider dissemination of research findings on the internet, in popular science publications, and through public lectures.
(a) To establish for the first time a rock-based GSSP for the base of the Cryogenian that will also serve as the top of the underlying Tonian;
(b) To identify criteria useful in the subdivision and correlation of Cryogenian (and upper Tonian) strata;
(c) To define the basal boundaries of Cryogenian epochs (series) and ages (stages) through the establishment of GSSPs;
(d) To facilitate international collaboration in research on Cryogenian stratigraphy and Earth history through subcommission sponsored field trips, workshops, and meetings.
In addition, the Subcommission is committed to expanding communication to a wider public through grassroots initiatives to conserve important Neoproterozoic geological sites, to support International Geoscience Programme projects, and to encourage the wider dissemination of research findings on the internet, in popular science publications, and through public lectures.