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Showing results for tags 'northwest territories'.
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- cyrtospirifer
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From Mattson(Mississippian) or Fantasque formation(Pennsylvanian) just outside of Fort Laird NWT Canada. these were quick snap shots before i had to jump in helicopter from a fire tower on top of a small mountain. i am guessing based of discription it is Calamites cistii? did my own research so could be way off. From what i have read this is one of the only Carboniferous deposits in the entire region.
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Discovered this about 10 km upstream from the Mackenzie River bridge on the north bank while fishing. I was thinking it was covered in plant impressions, although I do not know what era it is so I will leave that for the experts to decide. I'm always grateful to hear everyone's thoughts and opinions, as well as learn something new. Thanks
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- mackenzie river
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Uncovering Earths oldest continental crust Scientists uncover insights into the formation of Earth's oldest continental crust. By Jennifer Pascoe on September 19, 2016 https://www.ualberta.ca/science/science-news/2016/september/uncovering-earths-oldest-continental-crust https://www.sciencedaily.com/releases/2016/09/160919121941.htm The paper is: Reimink, J. R., J. H. F. L. Davies, T. Chacko, R. A. Stern, L. M. Heaman, C. Sarkar, U. Schaltegger, R. A. Creaser, and D. G. Pearson, 2016, No evidence for Hadean continental crust within Earth’s oldest evolved rock unit. Nature Geoscience, 2016; DOI: 10.1038/ngeo2786 http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2786.html Yours, Paul H.