"Achieving international distinction for creativity, innovation and excellence in geographical, geological and environmental education, research and outreach."

Publications

Papers
Presentations (selected)
Conference Posters

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Papers

Moumblow Hewitson, R.M., 2010.  Nd-Isotope Mapping of the Grenville Province in Southern Labrador.  Masters Thesis. McMaster University Department of Geography and Earth Sciences

 

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Presentations (selected)

 

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Conference Posters (Including Proceedings of Meetings)

Moumblow Hewitson, R.M. and Dickin, A. P., 2009.  Nd-Isotope Mapping of Southern Labrador. Presented by R. M. Hewitson.  AGU Joint Assembly. May 24-27, 2009.  Toronto, ON.

Moumblow, R.M., Dickin, A.P., and Gower, C. F., 2011.  The Crustal Evolution of Southern Labrador. Presented by R.M Moumblow. GAC-MAC Annual Meeting. May 25-27, 2011. Ottawa, ON.

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Teaching

McMaster University	EARTH SC 2I03, Earth Processes, 2012-13	T.A.
McMaster University	EARTH SC 4T03, Plate Tectonics & Ore Deposits, 2012-13	T.A.
McMaster University	EARTH SC 3K03, Petrology, 2012-13	T.A.
McMaster University	EARTH SC 2K03 Optical Crystallography & mineralogy, 2012-13	T.A.
McMaster University	EARTH SC 2GG3, Natural Disasters, 2011-12	T.A.
McMaster University	EARTH SC 2K03, Optical Crystallography & mineralogy, 2011-12	T.A.
McMaster University	EARTH SC 2I03, Earth Processes, 2010-11	T.A.
McMaster University	EARTH SC 3K03, Petrology, 2010-11	T.A.
McMaster University	EARTH SC 2K03, Optical Crystallography & mineralogy, 2010-11	T.A.
McMaster University	EARTH SC 3K03, Petrology, 2009-10	T.A.
McMaster University	EARTH SC 2K03, Optical Crystallography & mineralogy, 2009-10	T.A.
McMaster University	Envir. Sc. 3EP3 Environmental Policy and Planning, 2009	T.A.
McMaster University	Geo 4A03 Environmental Assessment, 2008	T.A.
McMaster University	Geo 2MM3 Gemstones, 2007	T.A.
McMaster University	Geo 2WW3 Water Studies, 2007	T.A.
McMaster University	Geo 2GG3 Natural Disasters, 2006	T.A.
McMaster University	Geo 1A03 Atmosphere and Hydrosphere, 2005
McMaster University	1G03 Geosphere, 2004

 

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Affiliations

• American Geophysical Union
  
• Geological Association of Canada

 

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Research

Research Interests:

• Radiogenic Isotope Geology
  

• Crustal evolution in the Grenville Province of the Canadian Shield

Thesis Summary:

Geological Evolution of the Eastern Grenville Province

The eastern Grenville province comprises approximately 300,000 square km of the Canadian Shield. Its geological makeup is the product of Makkovikian (1860-1790 Ma), Labradorian (1710-1600 Ma), Pinwarian (1520-1460 Ma) and Grenvillian  (1085-985 Ma) orogenesis, plus intervening events not obviously related to orogenic activity. Much of the crust in this area has been dated to be Labradorian, whereas its present structural configuration was largely achieved by major translational movement of crustal terranes during the Grenville orogeny.
Most of the Eastern Grenville Province has been mapped at 1:100,000 scale by the Geological Survey of Newfoundland and Labrador, and by the Ministère de l'Énergie et des Ressources du Québec (MERQ). In addition, many U-Pb ages have been determined, as summarized by Gower and Krogh (2002). This work has allowed the timing of major crust forming events in the area to be defined. However, the time of separation of crustal material from the mantle and the spatial extents now represented by various mantle-separation events are much less well known. In other words, a  map that represents the time of original separation of crustal  material from the mantle is lacking.

Formation-age mapping of crustal terranes can be achieved by Nd isotope analysis of representative samples of the crust over a large geographical area.  Such work was begun in the Eastern Grenville Province by Dickin (2000), and has been complimented at later times by additional sample collection in specific areas. The objective of this thesis is to enhance understanding of crustal development in the Eastern Grenville Province by integrating results of previous studies with those of a new suite of samples across the whole Eastern Grenville Province to yield an improved map of crustal formation ages, including an understanding of the overall geological evolution of this segment of the Shield.

 

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Service

 

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