Structural geology interpreted from AEM Data - folded terrain at the Foothills of Rocky Mountains, British Columbia

F Jørgensen, A. Vignoli, G. Menghini, A. Viezzoli, S.A.S. Pedersen

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedings

1 Citationer (Scopus)

Abstrakt

This study presents an interpretation of newly collected AEM data from the Peace Region, British Columbia, Canada. Through careful data processing and interpretation we demonstrate the potential for AEM methods to map traditional structural geology such as folds and thrust structures. The study area covers about 1,960 km2, and based on a dense grid of flight lines, a conceptual structural geological model has been developed. The geology of the region generally comprises Cretaceous rocks which are gently folded and displaced by shallow westerly dipping thrust faults. Alternating clay content of the stratigraphic formations in the area makes them detectable by the AEM data. Our structural model presents a sedimentary regime affected by gentle deformation and thin-skinned thrust faulting. We are able to resolve several anticlines, synclines and thrust faults. The main thrust fault is east-dipping, thus counter to the regional Laramide orogenic trend and likely represents a backthrust from a subcutaneous structure (triangle zone). We suggest a décollement level to be situated in or just below the clay-rich Buckinghorse Formation.

OriginalsprogEngelsk
TitelConference Proceedings, Second European Airborne Electromagnetics Conference, Sep 2017, Volume 2017
ForlagEuropean Association of Geoscientists and Engineers
Sider61-65
Antal sider5
ISBN (Elektronisk)9781510850804
DOI
StatusUdgivet - 2017
Begivenhed2nd European Airborne Electromagnetic conference: Near Surface Geoscience 2017 - Malmö, Sweden
Varighed: 3 sep. 20177 sep. 2017

Konference

Konference2nd European Airborne Electromagnetic conference: Near Surface Geoscience 2017
ByMalmö, Sweden
Periode3/09/177/09/17

Programområde

  • Programområde 5: Natur og klima

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