PROBLEMS OF THE QUATERNARY STRATIGRAPHY OF THE SIBERIAN REGION

Author(s):  
I. D. Zolnikov ◽  
◽  
A. V. Shpansky ◽  
M. V. Mikharevich ◽  
◽  
...  

This special issue of the journal is devoted to modern controversial subjects arising during the research of the Siberian Quaternary system. The initiative to discuss these problems and new factual material that requires rethinking outdated stratigraphic constructions belonged to the section of the Quaternary system of SIBRMSK and was supported by leading experts actively working in the region. It should be noted that this issue does not cover all the unresolved issues on the geology, stratigraphy and paleogeography of the Quaternary period of Siberia.

Quaternary ◽  
2018 ◽  
Vol 1 (3) ◽  
pp. 24 ◽  
Author(s):  
Valentí Rull

In the coming years, the Anthropocene Working Group (AWG) will submit its proposal on the ‘Anthropocene’ to the Subcommission of Quaternary Stratigraphy (SQS) and the International Commission on Stratigraphy (ICS) for approval. If approved, the proposal will be sent to the Executive Committee of the International Union of Geological Sciences (IUGS) for ratification. If the proposal is approved and ratified, then the ‘Anthropocene’ will be formalized. Currently, the ‘Anthropocene’ is a broadly used term and concept in a wide range of scientific and non-scientific situations, and, for many, the official acceptance of this term is only a matter of time. However, the AWG proposal, in its present state, seems to not fully meet the requirements for a new chronostratigraphic unit. This essay asks what could happen if the current ‘Anthropocene’ proposal is not formalized by the ICS/IUGS. The possible stratigraphic alternatives are evaluated on the basis of the more recent literature and the personal opinions of distinguished AWG, SQS, and ICS members. The eventual impact on environmental sciences and on non-scientific sectors, where the ‘Anthropocene’ seems already firmly rooted and de facto accepted as a new geological epoch, are also discussed. This essay is intended as the editorial introduction to a Quaternary special issue on the topic.


1987 ◽  
Vol 67 (2) ◽  
pp. 221-247 ◽  
Author(s):  
K. W. G. VALENTINE ◽  
C. TARNOCAI ◽  
C. R. DE KIMPE ◽  
R. H. KING ◽  
J. F. DORMAAR ◽  
...  

This review describes some aspects of Canadian soils that are relevant to the Quaternary. It includes a description of the Quaternary Period in Canada, including a chronology of the major events that influenced soil formation, and the implication of the Quaternary to Canadian soils. The contribution of relict and buried paleosols to Quaternary stratigraphy and the reconstruction of paleoenvironments is then discussed, including some of the inherent problems. Pedologic evidence of environmental change in the southern Rocky Mountains, including tephrostratigraphy, is followed by a description, with numerous radiocarbon dates, of Holocene peat deposits. The review concludes with a discussion of weathering and saprolites in eastern Canada. Key words: Quaternary, Holocene, paleosols, stratigraphy, paleoenvironments, peat


2008 ◽  
Vol 45 (5) ◽  
pp. 509-512 ◽  
Author(s):  
Vic Levson

This special issue reports on some of the results of a multi-disciplinary research program conducted in the Boreal Plains of northwest Alberta and northeast British Columbia. Several innovative approaches to conducting geoscientific research in this remote drift-covered region are presented, including geochemical analysis of bentonites for evaluating kimberlite potential, the use of electromagnetic surveys for mapping buried aggregate deposits, and paleo-topographic mapping techniques to define buried channels. Results of the program include the discovery of several large aggregate deposits, the first kimberlite indicator minerals in northeast British Columbia, a significant sphalerite dispersal train in northwest Alberta, the first documented report of kimberlite-sourced bentonites, and numerous previously unknown interglacial sites. Together these papers provide a greatly enhanced understanding of the glacial history, Quaternary stratigraphy, and kimberlite geology of northwest Alberta and northeast British Columbia and provide an improved framework for resource exploration in the region.


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