Jazzbo
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I thought I would start yet another thread on the Ossipees. I was looking around on line for info on ring dikes and came up with this web page listing Prof. Nelson Eby's list of field trips and related links. I would definitely classify this writer as an "authoritative" source. Professor Eby teaches geology at UMass Lowell. There's lots of trips listed for trips to magmatic hot spots around NH. One can glean a lot of interesting stuff just by reading some of these technical papers.
http://faculty.uml.edu/Nelson_Eby/field%20trip%20guides.htm
The ring dike structure is relatively common in NH and Quebec and probably also in Maine. It's more like a process that took place in various forms. There's even a string of ring dikes structures called the Montegenerian Hills that stretches across Quebec from Montreal over to Mont Megantic that are all ring dike structures. Anyone who drives up to Montreal from the south has probably wondered about those striking mountain ridges that dot the landscape. Mont Megantic appears to be a smaller version of the Ossipees. Smaller but still a circular dike mountain ridge of similar materials.
Those with some scientific background might consider taking some of his courses. The field trips sound pretty interesting.
Trolling around randomly in some of his Powerpoint slides on Igneous and Metamorphic Petrology I came up with some interesting slides. Several of these show exactly what might have happened during the development of Ossipee ring dike.
http://faculty.uml.edu/Nelson_Eby/89.304/Schedule.htm
http://faculty.uml.edu/Nelson_Eby/field%20trip%20guides.htm
The ring dike structure is relatively common in NH and Quebec and probably also in Maine. It's more like a process that took place in various forms. There's even a string of ring dikes structures called the Montegenerian Hills that stretches across Quebec from Montreal over to Mont Megantic that are all ring dike structures. Anyone who drives up to Montreal from the south has probably wondered about those striking mountain ridges that dot the landscape. Mont Megantic appears to be a smaller version of the Ossipees. Smaller but still a circular dike mountain ridge of similar materials.
Those with some scientific background might consider taking some of his courses. The field trips sound pretty interesting.
Trolling around randomly in some of his Powerpoint slides on Igneous and Metamorphic Petrology I came up with some interesting slides. Several of these show exactly what might have happened during the development of Ossipee ring dike.
http://faculty.uml.edu/Nelson_Eby/89.304/Schedule.htm