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Ages and origins of rocks of the Killingworth Dome, south-central Connecticut: implications for the tectonic evolution of southern New England

Aleinikoff, John N.; Wintsch, R P; Tollo, Richard P.; Unruh, Daniel M.; Fanning, Christopher; Schmitz, Mark D.


The Killingworth dome of south-central Connecticut occurs at the southern end of the Bronson Hill belt. It is composed of tonalitic and trondhjemitic orthogneisses (Killingworth complex) and bimodal metavolcanic rocks (Middletown complex) that display calc-alkaline affinities. Orthogneisses of the Killingworth complex (Boulder Lake gneiss, 456 ± 6 Ma; Pond Meadow gneiss, ∼460 Ma) were emplaced at about the same time as eruption and deposition of volcanic-sedimentary rocks of the Middletown...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: American Journal of Science
DOI: 10.2475/01.2007.04


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