[Riller] Structural analysis and remote sensing of the East Range, Sudbury Impact Structure, Canada

German Title: Structural analysis and remote sensing of the East Range, Sudbury Impact Structure, Canada

Abbreviation: 187

Current Status: completed

Main Applicant:Prof. Dr. Ulrich Riller

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Conveyor Duration:
Year: 2004


The 1.85 Ga Sudbury Impact Structure, located in the Canadian Shield of Ontario, was affected by orogenic deformation that led to shortening of the Structure by large-scale thrusting and folding. Knowledge of the impact-induced 3-D geometry of impactites and magmatic bodies of the Structure is paramount to infer geological processes during crater evolution. A combination of three geoscientific techniques is proposed to infer the geometry of the Impact Structure prior to orogenic deformation: (1) field-structural analysis pertaining chiefly to understand of folding in deformation, (2) a complete 3-D kinematic balancing of post-impact deformation and (3) analoque modelling using viscous materials to constrain ductile deformation of the Impact Structure. Field-structural analyses will include examination of petrofabrics in the contact zone of the main mass of the Sudbury Igneous Complex with Archean host rocks as well as mapping of mineral shape fabrics in Archean rocks. Kinematic modelling will be based on field-structural data from critical areas of the Impact Structure but also published geophysical and structural geological data. The study is als intended as a pilot study to the International Continental Drilling Program and is expected to contribute to help identify the most suit- able location(s) for deep drilling in the Sudbury area.

Related Publications

Hecht, L., Wittek, A., Riller, U., Mohr, T., Schmitt, R. T., Grieve, R. A. F. (2008). "Differentiation and emplacement of the Worthington Offset Dike of the Sudbury impact structure, Ontario" Meteoritics & Planetary Science 43, Nr. 10 p1659-1679

Klimczak, Christian, Wittek, Andrea, Doman, Daniel, Riller, Ulrich (2007). "Fold origin of the NE-lobe of the Sudbury Basin, Canada: Evidence from heterogeneous fabric development in the Onaping Formation and the Sudbury Igneous Complex" Journal of Structural Geology 29 p1744-1756

Riller, Ulrich (2005). "Structural characteristics of the Sudbury impact structure, Canada: Impact-induced versus orogenic deformation—A review" Meteoritics & Planetary Science 40 p1723-1740

Schwerdtner, W.M., Riller, U.P., Borowik, A. (2005). "Structural testing of tectonic hypotheses by field-based analysis of distributed tangential shear: examples from major high-strain zones in the Grenville Province and other parts of the southern Canadian Shield" Canadian Journal of Earth Sciences 42 p1927-1947