Paleoecology and climatic context of the Pliocene Fossil Forest of Bylot Island, Canadian Arctic

The fieldwork consisted of excavating stratigraphic exposures (up to 5 meters height) in the permafrost. These sections were excavated to clarify the depositional sequences that occurred during the Plio-Pleistocene boundary. For stratigraphic exposures, detailed (cm) sedimentological and stratigraphic descriptions were done in order to reconstruct the depositional environments. Boreholes were also drilled with a permafrost core drill to reach deeper strata. This excavation work was combined with large scale stratigraphic characterization of the study site with a differential GPS. The DGPS was also used to geo-reference the bedrock at the study site for a better imaging of the local physiography at the time of tree growth. Samples were collected for laboratory pollen and grain-size distribution analyses to precise the depositional environment and vegetation assemblages. All the data will be integrated into a geographic information system and analyzed with pollen (C2 and Tilia) and sedimentology analysis software (Gradistat). Along the stratigraphic exposures, we collected sediment samples for paleomagnetism analyses to ascertain the chrono-stratigraphic framework. The analyses were made with a cryogenic magnetometer at the Sedimentary Paleomagnetism Laboratory (UQAM). Wood pieces were also collected for future macro-fossil/tree ring analyses. The majority of these pieces were very well preserved and some still had bark on them.

Identifier
Source https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=10272
Metadata Access http://www.polardata.ca/oai/provider?verb=GetRecord&metadataPrefix=fgdc&identifier=10272_fgdc
Provenance
Creator Guertin, Alexandre; Fortier, Daniel
Publisher Canadian Cryospheric Information Network
Contributor Polar Data Catalogue
Publication Year 2019
Rights Research programs, CCIN, or ArcticNet take no liability for the use or transmission of this data
OpenAccess true
Contact sum_4141(at)hotmail.com; pdc(at)uwaterloo.ca
Representation
Language English
Format Computer file
Discipline Environmental Research
Spatial Coverage (-80.000W, 73.160S, -79.500E, 73.250N)
Temporal Coverage Begin 2009-07-01T00:00:00Z
Temporal Coverage End 2010-07-26T00:00:00Z