P11A:
Recent Developments at Sudbury and Other Canadian Impact Structures

Submit an Abstract to this Session

Session ID#: 6812

Session Description:
Impact cratering has played an important role in shaping the Earth and other planetary bodies in the Solar System, from creating world-class economic resources to the negative and positive effects on the evolution of life. One sixth of the world’s known impact structures can be found in Canada, thanks to a large extent to the well-preserved Precambrian rock record. From the ~250 km diameter Sudbury structure to the ~40 m diameter Whitecourt crater, the Canadian impact record offers an important natural laboratory for studying impact cratering processes. This session seeks to highlight recent advances at Sudbury and other Canadian impact structures. We welcome contributions relating to any aspect of the Canadian impact record, from field studies, economic resources, laboratory-based studies of samples, to numerical modeling of specific craters. Contributions that relate to distal ejecta deposits and boundary layers associated with impact craters (e.g., the Cretaceous–Paleogene boundary) are also welcome.
OSPA Liaison:  Gordon R Osinski, University of Western Ontario, Earth Sciences, London, ON, Canada
Chairs:  Richard A F Grieve, Natural Resources Canada, Ottawa, ON, Canada and Peter C Lightfoot, Vale, Sudbury, ON, Canada
Primary Convener:  Gordon R Osinski, University of Western Ontario, Earth Sciences, London, ON, Canada
Conveners:  Richard A F Grieve, Natural Resources Canada, Ottawa, ON, Canada and Peter C Lightfoot, Vale, Sudbury, ON, Canada
Index Terms:

3625 Petrography, microstructures, and textures [MINERALOGY AND PETROLOGY]
3665 Mineral occurrences and deposits [MINERALOGY AND PETROLOGY]
3690 Field relationships [MINERALOGY AND PETROLOGY]
5420 Impact phenomena, cratering [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
Co-Sponsor(s):
  • ES - Earth Surface Processes
  • MD - Mineral Deposits and Ore Minerals

Abstracts Submitted to this Session:

P11A-01
Impact Melt Emplacement, Cooling, and Crystallization in the Sudbury Igneous Complex (35968)
C Michael Lesher, Laurentian University, Mineral Exploration Research Centre, Department of Earth Sciences, Goodman School of Mines, Sudbury, ON, Canada
P11A-02
Geochemical Variation Along Strike of the Hess Offset Dyke at the Sudbury Impact Structure, Canada (33281)
Eric Pilles1, Gordon R Osinski1, Joshua Bailey2 and David Smith2, (1)University of Western Ontario, Earth Sciences, London, ON, Canada, (2)Wallbridge Mining Company Limited, Sudbury, ON, Canada
P11A-03
Electron Microprobe Analysis of Sudbury Breccia from the Creighton and Coleman Mines, Sudbury Ontario: Constraints on the Extent of Hydrothermal Modification of Magmatic Footwall Ni-Cu-PGE Sulphide Mineralisation. (33969)
Jonathan O'Callaghan1, Gordon R Osinski2, Robert Linnen2 and Peter C Lightfoot3, (1)University of Western Ontario, Department of Earth Sciences, London, ON, Canada, (2)University of Western Ontario, Earth Sciences, London, ON, Canada, (3)Vale, Sudbury, ON, Canada
P11A-04
The Age of the Carswell Impact Structure (35478)
Wouter Bleeker1, Anthony N Lecheminant2, Carl Alwmark3, Laurence Page3, Anders Schérsten3 and Ulf Söderlund4, (1)Geological Survey of Canada, Ottawa, ON, Canada, (2)Geological Survey of Canada (retired), Ottawa, ON, Canada, (3)Department of Geology, Lund University, Lund, Sweden, (4)Lund University, Department of Geology, Lund, Sweden
P11A-05
Examining Infrared Reflectance Spectra of Shocked and Unshocked Granites from Lake St. Martin Impact Structure: Implications for Detection on Mars. (36673)
Rebecca Wilks1, Daniel M Applin2, Edward Cloutis2, Paul Mann2 and Matthew R Izawa1, (1)University of Western Ontario, London, ON, Canada, (2)University of Winnipeg, Department of Geography, Winnipeg, MB, Canada
P11A-06
New Ar-Ar Dating of the East and West Clearwater Lake Impact Structures, Québec, Canada – Evidence for Two Separate Impact Events (34199)
Martin Schmieder1, Winfried H. Schwarz2, Mario Trieloff3, Eric Tohver4, Elmar Buchner5, Jens Hopp2, Gordon R Osinski6 and Richard A F Grieve7, (1)Lunar and Planetary Institute, Houston, TX, United States, (2)University of Heidelberg, Heidelberg, Germany, (3)Heidelberg University, Institute of Earth Sciences, Heidelberg, Germany, (4)University of Western Australia, Crawley, WA, Australia, (5)HNU Neu-Ulm University of Applied Sciences, Neu-Ulm, Germany, (6)University of Western Ontario, Earth Sciences, London, ON, Canada, (7)Natural Resources Canada, Ottawa, ON, Canada
P11A-07
Impact-generated Hydrothermal Activity at the East and West Clearwater Lake Impact Structures (35739)
Mary C Kerrigan, University of Western Ontario, London, ON, Canada and Gordon R Osinski, University of Western Ontario, Earth Sciences, London, ON, Canada
P11A-08
Geophysical Investigation of Charity Shoal Structure: A Suspected Impact Crater in northeastern Lake Ontario (35697)
Mary-Helen Armour, Joe I Boyce and Philip A Suttak, McMaster University, School of Geography and Earth Sciences, Hamilton, ON, Canada
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