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Layered intrusions of the Duluth Complex, Minnesota, USA

Layered intrusions

By:
,
Edited by:
Cawthorn R.G.

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Abstract

The Duluth Complex and associated subvolcanic intrusions comprise a large (5000 km2) intrusive complex in northeastern Minnesota that was emplaced into comagmatic volcanics during the development of the 1.1 Ga Midcontinent rift in North America. In addition to anorthositic and felsic intrusions, the Duluth Complex is composed of many individual mafic layered intrusions of tholeiitic affinity. The cumulate stratigraphies and cryptic variations of six of the better exposed and better studied intrusions are described here to demonstrate the variability in their cumulus mineral paragenesis.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Layered intrusions of the Duluth Complex, Minnesota, USA
Series title:
Layered intrusions
Year Published:
1996
Language:
English
Publisher:
Elsevier; Developments in Petrology
Publisher location:
15
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Layered intrusions
First page:
257
Last page:
301
Number of Pages:
45