Geological Society of America (GSA) Northeastern Section 48-th Annual Meeting

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Start Date: 
Monday, March 18, 2013
End Date: 
Wednesday, March 20, 2013

Location: Bretton Woods, New Hampshire, USA


Includes the following session:

T18: Mesozoic igneous features of northeastern North America: magmatic origins and links to tectonic events


Convenors: Gregory McHone (, John Puffer (, Nelson Eby (


Several great magmatic events in northeastern North America are recorded by overlapping provinces of Triassic, Jurassic, and Cretaceous dikes, sills, lavas, and plutonic complexes. They provide clues for the origins of mantle basalts, crustal melting, differentiation of magmas, formation of composite volcanoes, and major fissure eruptions with their environmental impacts. In addition the magmatic events are linked to specific tectonic features and Early Mesozoic rift basins of Pangaea as it separated into new continents and opened the Atlantic Ocean. We invite presentations on both specific features and more general models to describe and explain the origins and significance of these Mesozoic magmas and events.

Bretton Woods, New Hampshire, USA