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The Litchfield, Maine Nepheline Syenite Pluton

Last Updated: 11th Jul 2012

Since first posting this piece in April 2012, I've learned from Bob Marvinney at the Maine Geological Survey that the Litchfield nepheline syenite has been recently dated to 321 Ma via U/Pb zircon analysis. As such I've pulled down the original piece until an update is completed. Basically, this 321 Ma dating makes the Litchfieldite even weirder than anyone thought before, if that is possible.

-- Doug.

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Comments

Very interesting. Thanks so much.

Rob Woodside
15th May 2012 11:25pm

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