Dr. Barrie Clarke Department of Earth Sciences Dalhousie University, Halifax Dr. Randall Miller Research Curator, Geology and Palaeontology New Brunswick Museum

New Brunswick Museum
New Brunswick Museum
2012
Halifax, New Brunswick, CANADA
St. George, New Brunswick, CANADA
© 2013, New Brunswick Museum. All Rights Reserved.


Transcript

MILLER

So this one has a few unique properties to it that you are looking for.

CLARKE

Yeah it does. One of the things we have to match is the age, and we know the age of the Titanic headstones is 422 million years, plus or minus 2 million years, and that is the age of the black granites in southwestern New Brunswick. So I suspect if we took a sample of this and dated it we would also get 422. That’s one of the things we’ll have to do when we have a real candidate that we think is a match. We have to match the minerals too, and the interesting thing about the Titanic headstones is that they have not one, not two, but five different black minerals in them, and that’s most unusual for a gabbro. So if this sample has only four of them, then this isn’t the one. I’ve got to find one with olivine, clinopyroxene, orthopyroxene, hornblende and biotite, and it’s quite a tall order to fill.


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