U-Pb zircon geochronology of Paleoproterozoic plutons from the northern midcontinent, USA: Evidence for subduction flip and continued convergence after geon 18 Penokean orogenesis

Holm, Daniel; R. Van Schmus, W.; C. MacNeill, Leah; Boerboom, T.J.; Schweitzer, Daniel; Schneider, David

doi:10.1130/b25395.1

Public

U-Pb zircon geochronology of Paleoproterozoic plutons from the northern midcontinent, USA: Evidence for subduction flip and continued convergence after geon 18 Penokean orogenesis

Published in Geological Society of America Bulletin • Jan 1, 2005

Authors:

Daniel Holm

W. R. Van Schmus

Leah C. MacNeill

Abstract

We propose that the late Paleoproterozoic igneous and deformational history preserved in the northern midcontinent United States can be explained by a change in subduction-polarity from geon 18 south-dipping subduction during Penokean accretion to geon 17 north-dipping subduction as convergence cont...

Subject

Pluton

Geology

Geochronology

Finding related papers...

Discussions

(0)

No comments yet

Be the first to share your thoughts!