Geoscience BC Report 2011-13

Preliminary Lithological and Structural Framework of Eocene Volcanic Rocks in the Nechako Region, Central British Columbia (NTS 92O, 92P, 93A, 93B, 93C, 93G)
by Esther Bordet, Craig Hart and Dianne Mitchinson (University of British Columbia, MDRU)

Report Components

Report Description
This report presents the preliminary interpretations of an ongoing PhD thesis project by Esther Bordet. The report documents new mapping and proposes an improved stratigraphic and structural model for the Eocene period in the Nechako Basin. Characterization of the nature, thickness and structural framework of Eocene volcanic rocks in the Nechako region provides new insights into the area's Early Cenozoic history, contributes to improved interpretations and adds value to existing geophysical, particularly seismic and magnetotelluric, data sets.

The proposed GIS thickness model combined with interpreted structural and stratigraphic lineaments can be compared with magnetotelluric and seismic 2D profiles to define the structure of the underlying basin and interpret the abrupt changes in the thickness of the overlying Paleocene and Eocene packages. In addition, physical property measurements of mapped lithologies help constrain the geophysical responses of these rocks.

The new stratigraphic and structural model proposed for the Eocene volcanic sequence will provide a more robust framework for future mineral and oil & gas exploration in the Nechako region.

Suggested Reference
Bordet, E., Hart, C. and Mitchinson, D. (2011): Preliminary Lithological and Structural Framework of Eocene Volcanic Rocks in the Nechako Region, Central British Columbia; Geoscience BC, Report 2011-13, 81 p.

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